Vision Resources

Explore our vision resources, articles and information about eyes to answer all your eye questions. Topics range from eye function to specific disorders.

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Eye colour development: How and why it changes

Discover the science behind eye colour changes and development. Dr Dubow explains how unpredictable eye colour genetics determine iris pigmentation.

Green eyes: The most beautiful eye colour?

Learn about the rarity of green eye colour and how it is surveyed as the most attractive. Beautiful green eyes range in colour from emerald to lime.

Hazel eye colour: What causes hazel eyes?

Discover hazel eye colour facts, how rare it is and its causes. Hazel eyes come about due to variations in the interaction and expression of multiple genes.

Amsler grid test: Macular degeneration test chart

Learn about the Amsler grid test, a macular degeneration test that helps optometrists detect patients' eye problems. It is also known as the AMD test.