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An ophthalmologist’s guide.

Eyes Explained.

Worried about your eyes? Start here.

Understand your eyes with help from a consultant ophthalmologist.

Explore

Clear answers about your eyes, from someone who treats them

EyesExplained helps you make sense of confusing eye symptoms, calmly and clearly. It explains what is usually harmless, what deserves attention, and what to do next, with simple tools to help you understand what you are noticing.

Where to start

Common symptoms, explained

Floaters and flashes

Specks, cobwebs, and flashes of light: what they are, and the warning signs that matter.

Understand floaters →

Watery eyes

Why eyes water, why it is often worse on one side, and when it needs looking at.

Understand watery eyes →

One-sided symptoms

One eye darker, brighter, watering, or twitching: why one side alone can be reassuring, or not.

Explore one-sided symptoms →

Eyelid problems

Drooping, lumps, bags, and twitches, explained by an oculoplastic surgeon.

Understand eyelids →
Interactive tools

Work through your symptoms, step by step

Simple, private tools that help you make sense of what you are experiencing. Educational, and never a diagnosis.

Floaters tool

Understand what your floaters might mean and whether they need attention.

Open the tool →

Watery eyes tool

Work through why your eye is watering and what tends to help.

Open the tool →

Prescription decoder

Make sense of the numbers on your glasses prescription.

Open the tool →

Vision standards check

See the eyesight standards for driving and what they mean.

Open the tool →

One-sided symptom guide

Choose what you are noticing in one eye and get the right page to read.

Open the tool →

See it explained

Watch short hand-drawn animations of how the eye works and what goes wrong.

Watch the animations →
Chris Matthews, Consultant Ophthalmologist

EyesExplained is written by Chris Matthews, a Consultant Ophthalmologist and Oculoplastic Surgeon. Every page and every tool is grounded in real clinical experience. About the site and the surgeon →