Eyelids & the Anterior Segment:
Case twenty seven
|This 38 year-old woman had had a left
intraocular foreign body removed one year ago. Her current visual acuity
was 6/6 in the right eye and 6/60 in the left.
a. What is the most likely diagnosis ?
Heterochromia iridis can be divided into those conditions which make the iris darker (hyperchromia) and those lighter (hypochromia).
In early siderosis, the ERG shows increased a-wave with normal b-wave. As the condition progresses, the b-wave diminishes and in advanced cases the ERG is flat.
Siderosis damages the ocular structures mainly through the toxic effects of iron on the epithelium. In siderosis, the following signs may be seen:
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