The eyes can tell a number of factors, the position of the eye ball, and its response to look up etc show whether key cranial nerves are working. Indicates the possible presence of some tunours. Dilation of the pupil can indicate a number of problems.
The most common reason for looking at the back of the eye with an opthalmscope is to look for signs of uncontrolled diabetes. This can appear as little haemorrhages or lipid deposits on the retina surface.
Any changes to the retina should be investigated as untreated damage can lead to blindness.
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