Cataract surgery is one of the most commonly performed operations in the world, and one of the most overperformed. Knowing when surgery is genuinely necessary, which lens to choose, and whether you are getting advice free of commercial pressure is not a luxury. It is your right as a patient, says Dr Bhartiya.
Dr Shibal Bhartiya is a fellowship-trained glaucoma specialist and Mayo Clinic Research Collaborator with over 25 years of experience. Her approach focuses on identifying risk before damage is irreversible, simplifying treatment decisions, and protecting vision long-term. Emphasis on early detection, risk assessment, and continuity of care. She is rated 5 stars across 1,500+ patient reviews on Google.
What Is a Cataract?
A cataract is a clouding of the natural lens inside your eye. The lens sits behind the iris and pupil. It focuses light onto the retina. When the lens becomes opaque, vision blurs, glare worsens, and contrast fades.
Most cataracts develop with age. They can also follow eye injury, prolonged steroid use, or certain systemic conditions including diabetes. In India, cataracts remain the leading cause of reversible blindness.
Does Every Cataract Need Surgery?
No. This is the most important fact most patients are never told. A cataract becomes a surgical problem when it interferes meaningfully with daily life. The medical term is “visually significant cataract.” A cataract visible on examination but causing no functional difficulty does not require surgery.
Surgeons sometimes recommend early intervention for cataracts that are progressing quickly, occupying a large portion of the lens, or making accurate glaucoma monitoring difficult. Outside of those specific situations, timing is guided by your symptoms, not by what the surgeon sees on the slit lamp.
Questions worth asking your surgeon:
- Does my visual function actually warrant surgery now?
- What happens if I wait six months?
- Am I being recommended surgery because I need it, or because the cataract is there?
These are not rude questions. They are responsible ones.
What Happens During Cataract Surgery?
The surgeon makes a small incision at the edge of the cornea and uses ultrasound energy, a technique called phacoemulsification, to break up the clouded lens. The fragments are removed by suction. A clear artificial lens, called an intraocular lens (IOL), is then folded and placed in the same capsular bag that held the original lens.
The incision is self-sealing. No stitches are needed in most cases. The procedure takes approximately fifteen to twenty minutes per eye under local anaesthesia.
Which Intraocular Lens Is Right for You?
Lens selection is where cataract surgery becomes genuinely complex, and where independent advice matters most.
Monofocal lenses provide sharp vision at one distance, typically far. Most patients still need reading glasses after surgery. These lenses are included under most insurance schemes and are reliable, time-tested options.
Toric lenses correct astigmatism. If your cornea has significant astigmatism and you choose a standard monofocal lens, you will likely still need spectacles for distance. A toric lens reduces that dependence.
Multifocal and extended-depth-of-focus (EDOF) lenses aim to provide useful vision at more than one distance without glasses. They are premium lenses and carry an additional cost. They are also not suitable for everyone. Patients with dry eye, irregular corneas, or certain glaucoma diagnoses may experience more glare and halos with multifocal technology than with a monofocal lens.
Premium does not always mean better for your specific eye.
Your biometry measurements, corneal topography, lifestyle, occupation, and the health of your optic nerve and retina all inform which lens gives you the best outcome. Your doctor is the right person to give you neutral advice on this question, provided you discuss your expectations.
Laser-Assisted Cataract Surgery: Is It Worth It?
Femtosecond laser platforms, marketed under names like LenSx, CATALYS, and VICTUS — automate certain steps of the surgery, including the corneal incision, the circular opening in the lens capsule (capsulorrhexis), and pre-fragmentation of the lens. Laser assistance adds significant cost.
Evidence comparing outcomes between laser-assisted and standard phacoemulsification in uncomplicated cataracts does not consistently favour laser. In complex cases, dense cataracts, post-refractive surgery eyes, or combined procedures, laser assistance may offer measurable advantages. In straightforward cases, an experienced surgeon performing manual phacoemulsification achieves equivalent outcomes.
Ask specifically: in your case and with your surgeon’s volume and experience, does laser assistance change your outcome in a way that justifies the cost?
What Are the Risks?
Cataract surgery is safe. Serious complications are uncommon but real.
Posterior capsule opacification (PCO), sometimes called “secondary cataract”, is the most frequent long-term issue. The residual capsule behind the lens becomes cloudy months or years after surgery. A quick outpatient laser procedure called YAG capsulotomy clears it.
Other risks include infection (endophthalmitis), raised intraocular pressure, retinal detachment, and rarely, loss of the lens into the vitreous. The risk of any serious complication increases in eyes with pre-existing conditions: advanced glaucoma, high myopia, diabetic retinal disease, or prior eye surgery.
Declare every condition, every medication, and every prior surgery to your surgeon before the procedure.
Cataract Surgery and Glaucoma: A Critical Interaction
If you have glaucoma or are at risk of glaucoma, cataract surgery is not a straightforward decision. Several important interactions deserve careful thought.
Cataract surgery lowers intraocular pressure (IOP) in most eyes by a modest amount, typically two to three mmHg. In some glaucoma patients, this is clinically useful. In eyes with very shallow anterior chambers, removing the cataract also reduces the anatomical risk of angle closure.
However, certain premium lenses, particularly multifocal IOLs, can scatter light in ways that compromise the quality of visual field testing and OCT imaging used to monitor glaucoma. Choosing the wrong lens in a glaucoma patient does not just affect visual comfort. It can make it harder to track whether the disease is progressing.
Cataract surgery can also be combined with minimally invasive glaucoma surgery (MIGS) at the same sitting, providing pressure lowering alongside visual rehabilitation. Whether this combination is appropriate in your case requires a glaucoma specialist’s assessment, not only a cataract surgeon’s recommendation.
If you have glaucoma or raised eye pressure, seek a separate glaucoma opinion before finalising your cataract surgical plan. The two conditions interact in ways that require subspecialty input.
Also, its important to remember that cataract surgery does not protect your from glaucoma.
Recovery After Cataract Surgery
Most patients notice improved vision within twenty-four to forty-eight hours. Full optical stabilisation takes four to six weeks, after which your final glasses prescription, if needed, can be determined.
During recovery, avoid rubbing the eye, submerging your face in water, and dusty or smoky environments. Use your prescribed antibiotic and anti-inflammatory drops as directed. Do not miss your follow-up appointments. Early identification of pressure spikes or wound-related issues prevents complications from becoming serious.
Why a Second Opinion on Cataract Surgery Is a Sound Decision
Is a second opinion for cataract surgery worth it?
A second opinion before cataract surgery is not a sign of distrust. It is a sign of informed engagement with a permanent, irreversible decision.
Cataract surgery cannot be undone. The lens you started with is gone. The IOL placed in its capsule will remain in your eye for the rest of your life. Choosing incorrectly, whether that means operating too early, selecting the wrong lens power, or implanting a premium technology unsuitable for your eye, carries lasting consequences.
A second opinion serves several specific purposes.
It confirms that surgery is genuinely indicated now, not simply scheduled because the cataract exists. It provides an independent assessment of your biometry and which lens category: monofocal, toric, EDOF, or multifocal, suits your eye’s actual anatomy and your visual goals. It identifies pre-existing conditions, including early glaucoma or diabetic retinal changes, that affect surgical planning and lens selection.
Ethical ophthalmic care holds that the decision to operate must rest on clinical need. Lens selection must be guided by the patient’s eye, and lifestyle. An independent opinion from a specialist with no stake in the surgical outcome is the most reliable safeguard against both.
You deserve to walk into that operating theatre knowing that the decision was made for you, not for anyone else.
Frequently Asked Questions
How do I know if my cataract needs surgery now?
The central question is functional impairment. If your vision is limiting your ability to drive, read, work, or manage safely at home, and glasses no longer adequately correct it, surgery is likely indicated. A cataract present on examination without those symptoms does not require immediate intervention.
What is the best IOL for cataract surgery in India?
There is no universally best lens. The right IOL depends on your corneal measurements, the health of your retina and optic nerve, your lifestyle, and whether you have conditions like astigmatism or glaucoma. An independent pre-surgical assessment is the most reliable basis for this decision.
Can cataract surgery affect glaucoma?
Yes. Cataract surgery lowers eye pressure modestly and can reduce the anatomical risk of angle closure. However, certain premium lens technologies can interfere with glaucoma monitoring. A glaucoma specialist should review your case before surgery if you have or are suspected of having glaucoma.
Is laser cataract surgery better than traditional surgery?
In uncomplicated cataracts, outcomes are equivalent in experienced hands. Laser assistance may offer advantages in specific anatomical situations. It adds cost without adding clear benefit in straightforward cases. Ask your surgeon specifically why laser is recommended for your eye.
What is a second opinion for cataract surgery?
A second opinion is a consultation with a second ophthalmologist, ideally one with no involvement in your planned surgery, to independently assess whether surgery is indicated, which lens is appropriate, and whether any pre-existing conditions affect the decision. It is recommended for any permanent surgical procedure.
Read the Research
This article was written by Dr Shibal Bhartiya, fellowship-trained glaucoma specialist and Mayo Clinic Research Collaborator, Clinical Director at Marengo Asia Hospitals, Gurugram, known for ethical, patient-centred glaucoma care and independent glaucoma second opinions. She is also the Program Director for Community Outreach & Wellness; and for the Marengo Asia International Institute of Neuro and Spine. This article was updated in April 2026.
She has published peer-reviewed research on glaucoma management, examining how treatment decisions should balance medical evidence, patient preferences, and long-term vision outcomes.
As Editor-in-Chief of Clinical and Experimental Vision and Eye Research and Executive Editor of the Journal of Current Glaucoma Practice (Pubmed Indexed, official journal of the International Society of Glaucoma Surgery), Dr Shibal Bhartiya brings editorial and research depth to every clinical decision. Her 200+ publications, including 90+ PubMed-indexed publications and 28 edited textbooks span glaucoma biology, surgical outcomes, health equity, and emerging diagnostics.
Access her work on Pubmed, Google Scholar, ResearchGate and ORCID.
Dr Shibal Bhartiya
Glaucoma • Second Opinion • Advanced Care
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