Eye Pictures that Teach

The Uveal Tract

Click here to load a diagram of the eye that teaches about uveitis.  We recommend printing this picture and keeping it by your computer as you explore the website.  The file is large (print quality) and on some computers will take a little while to load.  Source:  Ocular Immunology and Uveitis Foundation.

To learn more about uveitis, use the Uveitis Glossary.

Interactive Drawing of the Eye

This is a great learning tool for kids and adults alike.

Move the  magnifying glass around to explore (enlarge) parts of the diagram.  Source: NIH

To learn more about uveitis, use the Uveitis Glossary.

Structures in the eye

Static drawing of the whole eye, showing the location of the cornea, pupil, iris, lens, retina, and optic nerve. Source: NIH

To look up these terms, use the Uveitis Glossary.

Structures in the front of the eye

Black and white diagram showing the cornea, pupil, iris and lens.  Source: NIH

To look up these terms, use the Uveitis Glossary.

Structures in the back of the eye

Black and white diagram showing the location of the macula and fovea.  Source: NIH

To look up these terms, use the Uveitis Glossary.

Tears

The function of tears is to bathe, lubricate, and nourish the surface of the eye. Tears also contains antibodies that help protect the eye from infection. Tears are produced by the lacrimal (tear) glands, located near the outer corner of the eye. The fluid flows over the eye and exits through two small openings in the eyelids (lacrimal ducts); these openings lead to the nasolacrimal duct, a channel that empties into the nose.  The eye's tears are composed of three layers: oil, water and mucus.

Animation of how the "aqueous" flows out of the eye 

Did you know?  In a healthy eye, the fluids in the front of the eye are exchanged about 10 times a day.  If something happens to disrupt this amazing system, pressures inside the eye can rise dramatically.  Fluids are produced in the ciliary body, and exit the eye through a delicate meshwork that surrounds the iris.