Inside the front of your eye
Behind the scenes, other parts of your eye work to help you see:
- Cornea. This is a protective dome of clear tissue at the front of your eye. It functions as a convex surface that helps focus light rays before they're fine-tuned by the lens.
- Lens. The lens is a clear, elliptical structure that sits behind the iris. The curvature of your lens changes to sharpen your focus.
- Vitreous cavity. The vitreous cavity extends from the back of the lens to the back of your eyeball, helping to maintain its shape. This area is filled with a clear, jellylike substance called the vitreous.