External and internal eye anatomy. Overview. The cornea allows light to enter the eye. As light passes through the eye the iris changes shape by expanding and letting more light through or constricting and letting less light through to change pupil size. The lens then changes shape to allow the accurate focusing of light on the retina. Eye anatomy both internal and external views Diagram - Chart - diagrams and charts with labels. This diagram depicts Eye anatomy both internal and external views and explains the details of Eye anatomy both internal and external views.
Eye anatomy both internal and external views
