vision/eye
• mutants develop iris disease that is first noticeable at 6 months of age when a population of small phagocytic clump cells began to be discernible across the iris surface
• with age, the underlying vasculature becomes obscured, and irides appear increasingly coarse and atrophic, particularly at the pupil margin where a narrow white band of underlying tissue is exposed
• with advanced age, full-thickness iris holes occur, but rarely before 2 years of age
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iris atrophy
(
J:128215
)
• irises are normal at 1-6 months of age, however, after 6 months of age, eyes show a gradual atrophy of the iris stroma
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