Male and female birds are very similar, with the hens distinguished only by their brighter, pinkish-red irides. |
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They may or may not be associated with defects in the anterior uveal tract as seen in the irides of SLIDE 15 and may, if bilateral be associated with significant reduction in visual acuity and nystagmus in infancy. |
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Iris pigmentation changes may be more noticeable in patients with mixed coloured irides, i.e., blue-brown, grey-brown, yellowbrown, and green-brown, however, it has also been observed in patients with brown eyes. |
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