---
title: "Cornea, conjunctiva and front-of-eye conditions"
description: "Browse cornea, conjunctiva and lens conditions — from dry eye and pink eye to keratoconus and cataracts — with clinically reviewed guides."
url: https://eyehealthguide.org/conditions/category/cornea/
source: Eye Health Guide
licence: "General information only. Cite the URL and the named medical reviewer."
---

Condition library

# Cornea, conjunctiva and front-of-eye conditions

Conditions of the clear front window of the eye, the white of the eye, the lens and common focusing problems.

Medical reviewer [Mr Mohamed Mohyudin](https://eyehealthguide.org/reviewers/mohamed-mohyudin/)· Last recorded site review July 6, 2026

### About this review

This page inherits the site’s previous review record. A separate, current article sign-off has not yet been recorded.

[How review works](https://eyehealthguide.org/reviewers/) · [Official biography & credentials](https://mohamedmohyudin.co.uk/author/mohamed-mohyudin/)

Quick answer

Front-of-eye conditions include dry eye, pink eye, corneal infections, cataracts and refractive errors. Redness with pain or vision change needs prompt care, while mild dryness or allergy is often manageable with hygiene, lubricating drops and avoiding triggers.

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## Frequently asked questions

### What causes a red eye without much pain?

Conjunctivitis, dry eye, blepharitis and a burst surface vessel are common. A painful red eye is more concerning and should be assessed promptly.

### Are contact lenses linked to cornea problems?

Yes. Sleeping in lenses, poor hygiene or swimming in lenses raises the risk of serious corneal infection. Remove lenses and seek same-day advice if the eye becomes painful or red.

### When do cataracts need surgery?

When blurred vision interferes with driving, reading or daily life and glasses no longer help. Surgery is usually considered based on symptoms, not the cataract size alone.

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