A cross-section of the human eye is shown.
At the back of the eye the retina appears,
showing small veins running through it.
Diabetes may affect the retina by causing
the formation of whitish patches called exudates.
The image zooms in on the retina
and the blood vessels are shown in detail.
Exudates appear on the surface of the retina.
Other indications may include tiny
enlargements of the blood vessels,
resulting in microaneurisms and hemorrhages.