Your Complete
Guide to
Cataract Surgery
Everything you need to know — what to do before surgery, what happens during the procedure, how to recover after, and how to choose the right intraocular lens. Evidence-based. India-relevant. 2026.
Preparation
Biometry, IOL selection, medication review, lifestyle preparation
Pre-Op
Fasting, eye drops begin, arranging transport and companion
The Procedure
10–20 min phacoemulsification, IOL implantation, intracameral antibiotic
Recovery
Vision stabilises over 4–6 weeks; follow-up visits; drops protocol
Why this guide exists — and who it is for
Cataract surgery is the most commonly performed surgical procedure on earth. In India alone, over four million operations are performed every year, yet many patients arrive at their pre-operative appointment without knowing what will happen, what choices they face, or what they must do to get the best result.
This guide exists to close that gap. It is written for patients who want to understand their own surgery, for surgeons who want a clinical reference they can share with their patients, and for ophthalmic distributors who want to understand the products their customers use — and why they matter.
We cover the complete surgical journey in four phases: preparation, the day before, the procedure itself, and the recovery. We also cover IOL selection, the role of every key surgical solution, and what warning signs must prompt urgent review.
The evidence base cited throughout this guide is from peer-reviewed literature. Product mentions are for educational illustration only. Individual surgical protocols will vary by surgeon experience, patient anatomy, and institutional practice.
What happens — and what you must do — before surgery day
The outcome of cataract surgery is determined as much before the first incision as during it. The pre-operative period is where IOL power is calculated, surgical risk is assessed, and patient expectations are aligned. Skipping or rushing any of these steps is the single most common cause of a disappointing visual result.
The Biometry Appointment: The Most Important Visit You Will Have
Optical biometry measures three critical parameters: axial length (length of the eyeball), corneal curvature (keratometry values K1 and K2), and anterior chamber depth. These three numbers feed into an IOL power formula (SRK/T, Holladay 2, Barrett Universal II, or Kane) to calculate exactly which lens power will leave you at your target refraction after surgery.
Modern biometers (IOLMaster 700, Lenstar LS900, Argos) achieve this in seconds using partial coherence interferometry or swept-source OCT. The accuracy of this measurement is paramount: a 1mm error in axial length translates to approximately 2.5–3 dioptres of refractive error after surgery.
Biometry & Topography
Axial length, K readings, ACD. For astigmatic patients, corneal topography identifies irregular or oblique astigmatism that affects IOL selection.
IOL Power Calculation
Using Barrett, Holladay 2, Kane, or PEARL-DGS formulae depending on axial length. Short eyes (<22mm) and long eyes (>26mm) require special formula selection.
IOL Type Selection
Monofocal, toric, EDOF, or multifocal — based on lifestyle, corneal health, pupil size, and patient expectations. See IOL comparison below.
Medical & Ocular Assessment
Diabetic patients need HbA1c <8%. Blood thinners are reviewed. Alpha-blockers (tamsulosin) raise IFIS risk — surgeon must be informed in advance.
Contact Lens Wearers: Stop Early
Contact lenses alter the shape of the cornea and therefore distort keratometry readings. Soft contact lens wearers should stop at least 5–7 days before biometry; rigid gas-permeable (RGP) or hard lens wearers should stop at least 3–4 weeks before. This is non-negotiable. Biometry done while contact-induced corneal distortion is present will result in an incorrect IOL power calculation.
Medication Review
Most regular medications continue without change. Specific exceptions: alpha-1 blockers (tamsulosin/Flomax, silodosin, alfuzosin — used for benign prostatic hyperplasia) cause Intraoperative Floppy Iris Syndrome (IFIS) even if stopped before surgery. Your surgeon must know if you have ever taken these. Anticoagulants (warfarin, rivaroxaban) are usually continued; stopping them risks systemic thromboembolic events. Blood sugar management is reviewed in diabetic patients.
Premium IOLs — EDOF, toric, multifocal — are unforgiving of biometry error. A toric IOL implanted at the wrong axis or with a miscalculated cylinder power will leave the patient with worse astigmatism than they started with. This is why surgeons who invest in good biometry hardware achieve consistently better outcomes with premium lenses — and why distributor education on biometry quality is directly relevant to premium IOL uptake.
Pre-Op Checklist for Patients
Which intraocular lens is right for you?
The IOL you receive in surgery will be inside your eye for the rest of your life. This decision deserves time and honest discussion with your surgeon. There is no universally “best” IOL — the right choice depends on your lifestyle, occupation, visual expectations, and corneal health.
| IOL Type | Distance Vision | Intermediate | Near Vision | Night Driving | Best For |
|---|---|---|---|---|---|
| Monofocal | Excellent | Glasses needed | Glasses needed | Excellent | Driving-focused lifestyle; budget-conscious; co-existing eye disease |
| Toric (astigmatism) | Excellent | Partial | Glasses needed | Excellent | Patients with >0.75D corneal astigmatism |
| EDOF (e.g. X-VIZ) | Excellent | Excellent | Reading glasses for fine print | Minimal halos | Active patients; technology users; driving + screen work |
| Multifocal / Trifocal | Excellent | Good | Good | Halos common | Full spectacle independence; motivated patients; no macular disease |
See our full Complete IOL Selection Guide and Hydrophobic vs Hydrophilic IOLs for deeper clinical comparison. For astigmatism specifically, read our complete toric IOL guide.
Step by step: what the surgeon does in 10–20 minutes
Modern cataract surgery — phacoemulsification — is performed under topical (eye drop) anaesthesia. You are awake throughout. You will see light and movement but will not see the instruments. You will feel no pain. The procedure typically takes 10–20 minutes from first incision to the final step.
Anaesthetic Eye Drops
Topical anaesthetic drops (e.g. proxymetacaine 0.5%) are instilled. No injection, no patch. The eye is numbed within 60 seconds.
Draping & Eyelid Speculum
A sterile drape covers the face with an opening for the eye. A speculum holds the eyelids apart so you do not need to worry about blinking.
Corneal Incisions
A 2–3mm main incision is made at the corneal periphery using a precision surgical blade. One or two paracentesis ports are made for instrument access.
OVD Injection
A viscoelastic device (OVD) such as sodium hyaluronate is injected into the anterior chamber to maintain space and protect the corneal endothelium.
Staining the Capsule (CCC)
Trypan blue 0.06% may be used to stain the anterior lens capsule blue, making the capsulotomy (CCC) visible in dense white cataracts.
Phacoemulsification
Ultrasound energy emulsifies the cloudy lens into small pieces. These fragments are simultaneously aspirated out of the eye.
IOL Implantation
The foldable IOL is loaded into an injector and inserted through the 2–3mm incision. It unfolds inside the capsular bag and is positioned precisely.
OVD Removal & Antibiotic
The OVD is aspirated out. Intracameral antibiotic (e.g. MOXGUARD) is injected into the anterior chamber. Incisions are hydrated and self-seal — no sutures.
The Role of Surgical Solutions — What’s Actually in the Operating Theatre
Several specialised solutions are used during the 15-minute procedure. Each plays a specific, evidence-based role:
You will lie flat under a bright operating light. You may be given a mild sedative. The anaesthetic drops will prevent all pain but you may feel gentle pressure. You will see swirling colours and light during phacoemulsification — this is completely normal. The surgeon will talk to you throughout. When it is over, a protective shield may be placed over your eye and you will be taken to a recovery area for approximately 30–60 minutes before going home.
Recovery: what changes when, and how fast
Cataract surgery recovery is generally rapid compared to most surgical procedures. But “rapid” does not mean “instant” — and managing expectations is essential for patient satisfaction.
Immediate Post-Op
Vision will be blurry or milky — this is normal as the eye adjusts and the dilating drops wear off. Rest at home with the eye shield in place. No reading, screen time, or bending. Take pain relief if needed (paracetamol is fine; avoid NSAIDs unless prescribed).
Early Recovery
Vision begins to clear. Colours may appear brighter or more vivid — this is because the yellow-tinted cataract lens has been removed. The eye may feel scratchy or gritty (foreign body sensation) as the incision heals. Continue eye drops as directed. Avoid rubbing the eye.
Functional Vision Restored
Most patients resume driving (in their jurisdiction, following their surgeon’s clearance) and normal daily activities. Light reading and screen use are generally fine. Avoid swimming and contact sports. Continue drops for the full prescribed course — usually 4 weeks.
Optical Stabilisation
The refraction settles and your optometrist can prescribe final glasses (if needed). This is when premium IOL outcomes are fully assessed. Posterior capsule opacification (PCO) — a secondary “cataract” — can develop months to years later and is corrected in 5 minutes with a YAG laser.
Post-Operative Eye Drop Protocol
Most surgeons prescribe a combination of antibiotic eye drops (e.g. ofloxacin, moxifloxacin) and anti-inflammatory drops (e.g. prednisolone, nepafenac) for 4 weeks. If intracameral MOXGUARD was used intraoperatively, some surgeons reduce or eliminate the post-operative antibiotic drop course. Follow your surgeon’s specific prescription — do not substitute or stop drops early.
Contact your surgeon immediately if you experience: sudden severe pain, significant worsening of vision, increasing redness or discharge, new floaters or flashes of light, or a dark curtain appearing across your vision. These may indicate endophthalmitis, retinal detachment, or raised intraocular pressure — all of which require urgent treatment.
See our detailed Week-by-Week Cataract Surgery Recovery Guide for a full month-by-month breakdown. And read our Endophthalmitis Prevention Guide to understand what we are defending against with MOXGUARD.
Posterior Capsule Opacification (PCO)
PCO — sometimes called a “secondary cataract” — occurs when residual lens epithelial cells migrate across the posterior capsule and cause haziness. It is not a failure of surgery; it is a normal healing response. It occurs in 10–40% of patients within 2–5 years of surgery and is treated with a 5-minute outpatient YAG laser capsulotomy. Read more in our PCO and YAG Laser guide.
Complications: rare but real
Cataract surgery has a complication rate below 1% in experienced hands. Understanding what can go wrong — and how it is managed — reduces anxiety and sets appropriate expectations.
- Posterior capsule rupture (PCR): Occurs in 0.5–2% of cases. Managed intraoperatively by the surgeon; may require anterior vitrectomy and different IOL fixation strategy. Visual outcome is usually still good.
- Endophthalmitis: Bacterial infection inside the eye. Incidence 0.03–0.10%. Requires urgent intravitreal antibiotic injection. Prevention with intracameral antibiotics (MOXGUARD) significantly reduces this risk.
- Corneal oedema: Temporary cloudiness from endothelial cell loss during phacoemulsification. Usually resolves. Dense pre-existing endotheliopathy increases this risk. See our Corneal Cell Loss guide.
- Refractive surprise: Wrong IOL power; requires glasses, contact lenses, or lens exchange.
- Retinal detachment: Very rare in phakic eyes; higher risk in high myopes (>−6D) and patients with pre-existing lattice degeneration.
- Dry eye exacerbation: Very common. Transient in most patients. Read our Dry Eye After Cataract Surgery guide.
Frequently asked questions
Preparation starts weeks before with your biometry appointment. Stop contact lens wear early (1 week for soft, 3–4 weeks for rigid), arrange a driver, fast from midnight before the procedure, and begin any prescribed pre-operative drops. Inform your surgeon of all medications — especially tamsulosin (used for prostate), blood thinners, and diabetes medications. On surgery day: no makeup, perfume, or lotions.
Yes — you are awake during phacoemulsification. Topical anaesthetic eye drops numb the eye completely so you will feel no pain. You may receive a mild intravenous sedative to help you relax. You will see light and movement but not the instruments. Most patients describe the experience as much easier than they expected. The entire procedure takes 10–20 minutes.
Vision begins improving within 24–48 hours. Most patients have functional vision for daily activities within 1 week. Final glasses prescription can be issued at 4–6 weeks when the refraction has stabilised. Continue eye drops for the full prescribed course (usually 4 weeks) and avoid eye rubbing, swimming, and strenuous exercise for at least 2–4 weeks.
There is no single “best” IOL. Monofocal IOLs give excellent distance vision with glasses for reading — the safest choice for patients with co-existing macular or corneal disease. EDOF IOLs (like X-VIZ) give distance to intermediate range with minimal halos — ideal for drivers and screen users. Multifocal IOLs attempt full spectacle independence but have more halos and glare in some patients. Your surgeon will recommend based on your lifestyle, occupation, and eye health.
Endophthalmitis (bacterial infection inside the eye) is the most serious complication of cataract surgery. An intracameral antibiotic injected at the end of surgery achieves immediate high antibiotic concentrations inside the eye — concentrations that topical drops cannot match. The ESCRS study (2006) showed intracameral cefuroxime reduced endophthalmitis risk approximately fivefold. MOXGUARD (intracameral moxifloxacin) is used as a ready-to-use alternative with broad-spectrum activity.
Go immediately to your surgeon or an emergency eye department if you develop: sudden severe eye pain, significant loss of vision, increasing redness or discharge, new floaters or flashes of light, or a shadow or curtain across your vision. These may indicate endophthalmitis, raised pressure, or retinal detachment — all time-critical emergencies. Early treatment dramatically improves outcomes.
References & Clinical Evidence
- Tan CSH et al. “Epidemiology of cataract surgery in India”. Indian J Ophthalmol. 2017;65(12):1340–1345. doi:10.4103/ijo.IJO_1069_17
- ESCRS Endophthalmitis Study Group. “Prophylaxis of postoperative endophthalmitis following cataract surgery”. J Cataract Refract Surg. 2007;33(6):978–988. doi:10.1016/j.jcrs.2007.02.021
- Chang DF, Campbell JR. “Intraoperative floppy iris syndrome associated with tamsulosin”. J Cataract Refract Surg. 2005;31(4):664–673. doi:10.1016/j.jcrs.2005.02.027
- Lundstrom M et al. “Risk factors for refractive error after cataract surgery”. J Cataract Refract Surg. 2018;44(5):561–566. doi:10.1016/j.jcrs.2018.01.031
- Wormstone IM, Wormstone YM. “Posterior capsule opacification”. Prog Retin Eye Res. 2020;74:100821. doi:10.1016/j.preteyeres.2019.100821
- Holland EJ et al. “Trypan blue as a surgical aid in cataract extraction in dense cataracts”. Curr Opin Ophthalmol. 2002;13(1):4–7. doi:10.1097/00055735-200202000-00002
- Behndig A et al. “Aiming for emmetropia after cataract surgery”. J Cataract Refract Surg. 2012;38(7):1181–1186. doi:10.1016/j.jcrs.2012.02.035
Your Complete
Guide to
Cataract Surgery
Everything you need to know — what to do before surgery, what happens during the procedure, how to recover after, and how to choose the right intraocular lens. Evidence-based. India-relevant. 2026.
Preparation
Biometry, IOL selection, medication review, lifestyle preparation
Pre-Op
Fasting, eye drops begin, arranging transport and companion
The Procedure
10–20 min phacoemulsification, IOL implantation, intracameral antibiotic
Recovery
Vision stabilises over 4–6 weeks; follow-up visits; drops protocol
Why this guide exists — and who it is for
Cataract surgery is the most commonly performed surgical procedure on earth. In India alone, over four million operations are performed every year, yet many patients arrive at their pre-operative appointment without knowing what will happen, what choices they face, or what they must do to get the best result.
This guide exists to close that gap. It is written for patients who want to understand their own surgery, for surgeons who want a clinical reference they can share with their patients, and for ophthalmic distributors who want to understand the products their customers use — and why they matter.
We cover the complete surgical journey in four phases: preparation, the day before, the procedure itself, and the recovery. We also cover IOL selection, the role of every key surgical solution, and what warning signs must prompt urgent review.
The evidence base cited throughout this guide is from peer-reviewed literature. Product mentions are for educational illustration only. Individual surgical protocols will vary by surgeon experience, patient anatomy, and institutional practice.
What happens — and what you must do — before surgery day
The outcome of cataract surgery is determined as much before the first incision as during it. The pre-operative period is where IOL power is calculated, surgical risk is assessed, and patient expectations are aligned. Skipping or rushing any of these steps is the single most common cause of a disappointing visual result.
The Biometry Appointment: The Most Important Visit You Will Have
Optical biometry measures three critical parameters: axial length (length of the eyeball), corneal curvature (keratometry values K1 and K2), and anterior chamber depth. These three numbers feed into an IOL power formula (SRK/T, Holladay 2, Barrett Universal II, or Kane) to calculate exactly which lens power will leave you at your target refraction after surgery.
Modern biometers (IOLMaster 700, Lenstar LS900, Argos) achieve this in seconds using partial coherence interferometry or swept-source OCT. The accuracy of this measurement is paramount: a 1mm error in axial length translates to approximately 2.5–3 dioptres of refractive error after surgery.
Biometry & Topography
Axial length, K readings, ACD. For astigmatic patients, corneal topography identifies irregular or oblique astigmatism that affects IOL selection.
IOL Power Calculation
Using Barrett, Holladay 2, Kane, or PEARL-DGS formulae depending on axial length. Short eyes (<22mm) and long eyes (>26mm) require special formula selection.
IOL Type Selection
Monofocal, toric, EDOF, or multifocal — based on lifestyle, corneal health, pupil size, and patient expectations. See IOL comparison below.
Medical & Ocular Assessment
Diabetic patients need HbA1c <8%. Blood thinners are reviewed. Alpha-blockers (tamsulosin) raise IFIS risk — surgeon must be informed in advance.
Contact Lens Wearers: Stop Early
Contact lenses alter the shape of the cornea and therefore distort keratometry readings. Soft contact lens wearers should stop at least 5–7 days before biometry; rigid gas-permeable (RGP) or hard lens wearers should stop at least 3–4 weeks before. This is non-negotiable. Biometry done while contact-induced corneal distortion is present will result in an incorrect IOL power calculation.
Medication Review
Most regular medications continue without change. Specific exceptions: alpha-1 blockers (tamsulosin/Flomax, silodosin, alfuzosin — used for benign prostatic hyperplasia) cause Intraoperative Floppy Iris Syndrome (IFIS) even if stopped before surgery. Your surgeon must know if you have ever taken these. Anticoagulants (warfarin, rivaroxaban) are usually continued; stopping them risks systemic thromboembolic events. Blood sugar management is reviewed in diabetic patients.
Premium IOLs — EDOF, toric, multifocal — are unforgiving of biometry error. A toric IOL implanted at the wrong axis or with a miscalculated cylinder power will leave the patient with worse astigmatism than they started with. This is why surgeons who invest in good biometry hardware achieve consistently better outcomes with premium lenses — and why distributor education on biometry quality is directly relevant to premium IOL uptake.
Pre-Op Checklist for Patients
Which intraocular lens is right for you?
The IOL you receive in surgery will be inside your eye for the rest of your life. This decision deserves time and honest discussion with your surgeon. There is no universally “best” IOL — the right choice depends on your lifestyle, occupation, visual expectations, and corneal health.
| IOL Type | Distance Vision | Intermediate | Near Vision | Night Driving | Best For |
|---|---|---|---|---|---|
| Monofocal | Excellent | Glasses needed | Glasses needed | Excellent | Driving-focused lifestyle; budget-conscious; co-existing eye disease |
| Toric (astigmatism) | Excellent | Partial | Glasses needed | Excellent | Patients with >0.75D corneal astigmatism |
| EDOF (e.g. X-VIZ) | Excellent | Excellent | Reading glasses for fine print | Minimal halos | Active patients; technology users; driving + screen work |
| Multifocal / Trifocal | Excellent | Good | Good | Halos common | Full spectacle independence; motivated patients; no macular disease |
See our full Complete IOL Selection Guide and Hydrophobic vs Hydrophilic IOLs for deeper clinical comparison. For astigmatism specifically, read our complete toric IOL guide.
Step by step: what the surgeon does in 10–20 minutes
Modern cataract surgery — phacoemulsification — is performed under topical (eye drop) anaesthesia. You are awake throughout. You will see light and movement but will not see the instruments. You will feel no pain. The procedure typically takes 10–20 minutes from first incision to the final step.
Anaesthetic Eye Drops
Topical anaesthetic drops (e.g. proxymetacaine 0.5%) are instilled. No injection, no patch. The eye is numbed within 60 seconds.
Draping & Eyelid Speculum
A sterile drape covers the face with an opening for the eye. A speculum holds the eyelids apart so you do not need to worry about blinking.
Corneal Incisions
A 2–3mm main incision is made at the corneal periphery using a precision surgical blade. One or two paracentesis ports are made for instrument access.
OVD Injection
A viscoelastic device (OVD) such as sodium hyaluronate is injected into the anterior chamber to maintain space and protect the corneal endothelium.
Staining the Capsule (CCC)
Trypan blue 0.06% may be used to stain the anterior lens capsule blue, making the capsulotomy (CCC) visible in dense white cataracts.
Phacoemulsification
Ultrasound energy emulsifies the cloudy lens into small pieces. These fragments are simultaneously aspirated out of the eye.
IOL Implantation
The foldable IOL is loaded into an injector and inserted through the 2–3mm incision. It unfolds inside the capsular bag and is positioned precisely.
OVD Removal & Antibiotic
The OVD is aspirated out. Intracameral antibiotic (e.g. MOXGUARD) is injected into the anterior chamber. Incisions are hydrated and self-seal — no sutures.
The Role of Surgical Solutions — What’s Actually in the Operating Theatre
Several specialised solutions are used during the 15-minute procedure. Each plays a specific, evidence-based role:
You will lie flat under a bright operating light. You may be given a mild sedative. The anaesthetic drops will prevent all pain but you may feel gentle pressure. You will see swirling colours and light during phacoemulsification — this is completely normal. The surgeon will talk to you throughout. When it is over, a protective shield may be placed over your eye and you will be taken to a recovery area for approximately 30–60 minutes before going home.
Recovery: what changes when, and how fast
Cataract surgery recovery is generally rapid compared to most surgical procedures. But “rapid” does not mean “instant” — and managing expectations is essential for patient satisfaction.
Immediate Post-Op
Vision will be blurry or milky — this is normal as the eye adjusts and the dilating drops wear off. Rest at home with the eye shield in place. No reading, screen time, or bending. Take pain relief if needed (paracetamol is fine; avoid NSAIDs unless prescribed).
Early Recovery
Vision begins to clear. Colours may appear brighter or more vivid — this is because the yellow-tinted cataract lens has been removed. The eye may feel scratchy or gritty (foreign body sensation) as the incision heals. Continue eye drops as directed. Avoid rubbing the eye.
Functional Vision Restored
Most patients resume driving (in their jurisdiction, following their surgeon’s clearance) and normal daily activities. Light reading and screen use are generally fine. Avoid swimming and contact sports. Continue drops for the full prescribed course — usually 4 weeks.
Optical Stabilisation
The refraction settles and your optometrist can prescribe final glasses (if needed). This is when premium IOL outcomes are fully assessed. Posterior capsule opacification (PCO) — a secondary “cataract” — can develop months to years later and is corrected in 5 minutes with a YAG laser.
Post-Operative Eye Drop Protocol
Most surgeons prescribe a combination of antibiotic eye drops (e.g. ofloxacin, moxifloxacin) and anti-inflammatory drops (e.g. prednisolone, nepafenac) for 4 weeks. If intracameral MOXGUARD was used intraoperatively, some surgeons reduce or eliminate the post-operative antibiotic drop course. Follow your surgeon’s specific prescription — do not substitute or stop drops early.
Contact your surgeon immediately if you experience: sudden severe pain, significant worsening of vision, increasing redness or discharge, new floaters or flashes of light, or a dark curtain appearing across your vision. These may indicate endophthalmitis, retinal detachment, or raised intraocular pressure — all of which require urgent treatment.
See our detailed Week-by-Week Cataract Surgery Recovery Guide for a full month-by-month breakdown. And read our Endophthalmitis Prevention Guide to understand what we are defending against with MOXGUARD.
Posterior Capsule Opacification (PCO)
PCO — sometimes called a “secondary cataract” — occurs when residual lens epithelial cells migrate across the posterior capsule and cause haziness. It is not a failure of surgery; it is a normal healing response. It occurs in 10–40% of patients within 2–5 years of surgery and is treated with a 5-minute outpatient YAG laser capsulotomy. Read more in our PCO and YAG Laser guide.
Complications: rare but real
Cataract surgery has a complication rate below 1% in experienced hands. Understanding what can go wrong — and how it is managed — reduces anxiety and sets appropriate expectations.
- Posterior capsule rupture (PCR): Occurs in 0.5–2% of cases. Managed intraoperatively by the surgeon; may require anterior vitrectomy and different IOL fixation strategy. Visual outcome is usually still good.
- Endophthalmitis: Bacterial infection inside the eye. Incidence 0.03–0.10%. Requires urgent intravitreal antibiotic injection. Prevention with intracameral antibiotics (MOXGUARD) significantly reduces this risk.
- Corneal oedema: Temporary cloudiness from endothelial cell loss during phacoemulsification. Usually resolves. Dense pre-existing endotheliopathy increases this risk. See our Corneal Cell Loss guide.
- Refractive surprise: Wrong IOL power; requires glasses, contact lenses, or lens exchange.
- Retinal detachment: Very rare in phakic eyes; higher risk in high myopes (>−6D) and patients with pre-existing lattice degeneration.
- Dry eye exacerbation: Very common. Transient in most patients. Read our Dry Eye After Cataract Surgery guide.
Frequently asked questions
Preparation starts weeks before with your biometry appointment. Stop contact lens wear early (1 week for soft, 3–4 weeks for rigid), arrange a driver, fast from midnight before the procedure, and begin any prescribed pre-operative drops. Inform your surgeon of all medications — especially tamsulosin (used for prostate), blood thinners, and diabetes medications. On surgery day: no makeup, perfume, or lotions.
Yes — you are awake during phacoemulsification. Topical anaesthetic eye drops numb the eye completely so you will feel no pain. You may receive a mild intravenous sedative to help you relax. You will see light and movement but not the instruments. Most patients describe the experience as much easier than they expected. The entire procedure takes 10–20 minutes.
Vision begins improving within 24–48 hours. Most patients have functional vision for daily activities within 1 week. Final glasses prescription can be issued at 4–6 weeks when the refraction has stabilised. Continue eye drops for the full prescribed course (usually 4 weeks) and avoid eye rubbing, swimming, and strenuous exercise for at least 2–4 weeks.
There is no single “best” IOL. Monofocal IOLs give excellent distance vision with glasses for reading — the safest choice for patients with co-existing macular or corneal disease. EDOF IOLs (like X-VIZ) give distance to intermediate range with minimal halos — ideal for drivers and screen users. Multifocal IOLs attempt full spectacle independence but have more halos and glare in some patients. Your surgeon will recommend based on your lifestyle, occupation, and eye health.
Endophthalmitis (bacterial infection inside the eye) is the most serious complication of cataract surgery. An intracameral antibiotic injected at the end of surgery achieves immediate high antibiotic concentrations inside the eye — concentrations that topical drops cannot match. The ESCRS study (2006) showed intracameral cefuroxime reduced endophthalmitis risk approximately fivefold. MOXGUARD (intracameral moxifloxacin) is used as a ready-to-use alternative with broad-spectrum activity.
Go immediately to your surgeon or an emergency eye department if you develop: sudden severe eye pain, significant loss of vision, increasing redness or discharge, new floaters or flashes of light, or a shadow or curtain across your vision. These may indicate endophthalmitis, raised pressure, or retinal detachment — all time-critical emergencies. Early treatment dramatically improves outcomes.
References & Clinical Evidence
- Tan CSH et al. “Epidemiology of cataract surgery in India”. Indian J Ophthalmol. 2017;65(12):1340–1345. doi:10.4103/ijo.IJO_1069_17
- ESCRS Endophthalmitis Study Group. “Prophylaxis of postoperative endophthalmitis following cataract surgery”. J Cataract Refract Surg. 2007;33(6):978–988. doi:10.1016/j.jcrs.2007.02.021
- Chang DF, Campbell JR. “Intraoperative floppy iris syndrome associated with tamsulosin”. J Cataract Refract Surg. 2005;31(4):664–673. doi:10.1016/j.jcrs.2005.02.027
- Lundstrom M et al. “Risk factors for refractive error after cataract surgery”. J Cataract Refract Surg. 2018;44(5):561–566. doi:10.1016/j.jcrs.2018.01.031
- Wormstone IM, Wormstone YM. “Posterior capsule opacification”. Prog Retin Eye Res. 2020;74:100821. doi:10.1016/j.preteyeres.2019.100821
- Holland EJ et al. “Trypan blue as a surgical aid in cataract extraction in dense cataracts”. Curr Opin Ophthalmol. 2002;13(1):4–7. doi:10.1097/00055735-200202000-00002
- Behndig A et al. “Aiming for emmetropia after cataract surgery”. J Cataract Refract Surg. 2012;38(7):1181–1186. doi:10.1016/j.jcrs.2012.02.035
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Your Complete Guide to Cataract Surgery: Before, During & After 2026