What a cataract is
The eye has a natural lens sitting behind the pupil. In a healthy eye it is clear, and it focuses light onto the retina. A cataract is what happens when the proteins in that lens clump together and the lens turns cloudy. Light scatters instead of focusing, and vision becomes progressively hazy.
Cataract is not a growth or a film over the eye, which is a common misunderstanding. It is the lens itself becoming opaque, which is why the treatment is to replace the lens rather than to remove something from the surface.
Symptoms that should bring you in
Cataracts develop slowly, often over years, and people frequently adapt without realising how much vision they have lost. The signs worth acting on:
- Vision that has become cloudy, dim or “smoky”, as though looking through a dirty window
- Glare and haloes around headlights, making night driving difficult
- Colours appearing faded or yellowed
- Needing brighter light to read than you used to
- Frequent changes in your spectacle prescription
- Double vision in one eye
Ageing is the commonest cause, but cataract also appears earlier in people with diabetes, after eye injury, after long-term steroid use, and occasionally from birth in children.
How it is diagnosed
Diagnosis is straightforward and painless. We check your vision, then examine the lens on a slit lamp after dilating the pupil with drops. Because the dilating drops blur your near vision for a few hours, it is sensible to have someone travel with you.
We also examine the retina at the same visit. This matters more than people expect. A cataract can hide retinal disease behind it, and if the retina is already damaged, surgery will not restore vision to the extent the patient is hoping for. Knowing this beforehand is the difference between a realistic expectation and a disappointed one. Where the view of the retina is obscured, further tests may be needed before surgery is planned.
How the surgery works
Modern cataract surgery is done by phacoemulsification. Through a very small incision, an ultrasound probe breaks the cloudy lens into fragments and removes them. A folded artificial lens, called an intraocular lens or IOL, is then placed into the natural lens capsule, where it unfolds into position and stays permanently.
The incision is small enough that it usually seals itself without stitches. The procedure is done under local anaesthesia as day care, so you are awake but the eye is numb, and you go home the same day.
There are several types of intraocular lens, and the right choice depends on your eyes, your work, your other eye conditions and your budget. This is a conversation to have with your surgeon before the date is fixed, not on the morning of surgery.
Recovery
Expect your vision to be blurry on the first day and to clear over the following days. You will be given eye drops on a tapering schedule, and taking them as prescribed matters — most post-operative problems in practice come from drops being stopped early.
For the first few weeks, avoid rubbing the eye, keep soap and water out of it, skip swimming, and avoid dusty or smoky places. Follow-up visits are arranged to check pressure and healing.
Contact the clinic promptly rather than waiting for your next appointment if you develop increasing pain, sudden loss of vision, or a marked increase in redness.
Why patients come to Sampada VR
Cataract surgery is widely available, so the question is a fair one. Our centre was built around retinal disease, and that background changes how we assess a cataract: the retina is examined properly first, with OCT and fundus imaging available in-house on the same visit if the view is unclear or the history suggests diabetes. For a patient whose cataract is straightforward, that is simply thoroughness. For a patient who also has diabetic retinopathy or a macular problem, it is the difference between a good outcome and an operation that was never going to deliver one.