The clear window in front
The cornea covers the coloured part of the eye. It lets light in and does most of the focusing, so even a small scar or change of shape can blur vision.
It has no blood vessels and heals slowly, which is why infections must be treated early and correctly — never with leftover or shop-bought steroid drops.
What we see most often
Infections and ulcers
Bacteria, fungus or virus, often after a scratch from a leaf, crop or dust.
Injuries
Scratches, foreign bodies and chemical splashes.
Keratoconus
The cornea thins and bulges into a cone, usually in young people; glasses change often.
Pterygium (nakhuna)
A fleshy growth from the white of the eye onto the cornea, linked to sun and dust.
Dry eyes
Burning, grittiness and watering from a poor tear film.
Pain, redness and blur
A painful red eye with blurred vision is never "just eye flu" if it does not improve in a day or two. Keratoconus shows as glasses power that keeps changing.
a chemical splash (wash the eye with clean water for 15 minutes first), an injury, a white spot on the cornea, or pain with blurred vision. Do not put any drops without seeing a doctor.
Call +91 94164 79792How the cornea is checked
Slit-lamp examination
A magnified, painless look at the cornea, sometimes with a harmless yellow dye.
Corneal topography
A map of the cornea’s shape — the key test for keratoconus.
Scraping for infection
For an ulcer, a tiny sample shows which germ it is, so the right drop is used.
Treatment depends on the cause
The right drops
Antibiotic, antifungal or antiviral drops, often every hour at first.
Lenses for keratoconus
Special rigid contact lenses often give clear vision when glasses cannot.
Surgery when needed
For example removing a pterygium when it grows towards the centre.
Dr. Swati explains the options for your eye at the visit, and refers to a cornea surgeon when a transplant or cross-linking is needed.
Questions patients ask us
Can I use leftover eye drops for a red eye?
No. Steroid drops can make a corneal infection much worse. See a doctor first.
Something fell in my eye. Should I rub it?
Do not rub. Blink and wash with clean water; if it still hurts, come in the same day.
My glasses power keeps changing. Why?
It can be keratoconus, especially in young people. A topography test tells.
Read more
- Keratoconus: when the cornea turns cone-shapedDr. Swati Goyal · 10 June 2024 · 5 min
- Pterygium: why it grows, and how it is treatedDr. Swati Goyal · 30 April 2024 · 6 min
- Dry eyes and screen work: causes, symptoms and what helps at homeDr. Swati Goyal · 18 April 2024 · 8 min
- Eye flu: how to avoid it, and why not to buy drops over the counterDr. Swati Goyal · 18 May 2024 · 4 min