An ophthalmologist’s guide.
Eyes Explained.
Worried about your eyes? Start here.
Understand your eyes with help from a consultant ophthalmologist.
An ophthalmologist’s guide.
Eyes Explained.
Worried about your eyes? Start here.
Understand your eyes with help from a consultant ophthalmologist.
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.

Specks, cobwebs, and flashes of light: what they are, and the warning signs that matter.
Understand floaters →
Why eyes water, why it is often worse on one side, and when it needs looking at.
Understand watery eyes →
One eye darker, brighter, watering, or twitching: why one side alone can be reassuring, or not.
Explore one-sided symptoms →
Drooping, lumps, bags, and twitches, explained by an oculoplastic surgeon.
Understand eyelids →Simple, private tools that help you make sense of what you are experiencing. Educational, and never a diagnosis.

Understand what your floaters might mean and whether they need attention.
Open the tool →
Work through why your eye is watering and what tends to help.
Open the tool →
Make sense of the numbers on your glasses prescription.
Open the tool →
See the eyesight standards for driving and what they mean.
Open the tool →
Choose what you are noticing in one eye and get the right page to read.
Open the tool →Watch short hand-drawn animations of how the eye works and what goes wrong.
Watch the animations →
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 →