👁 What is Posterior Amorphous Stromal Dystrophy (PASD)?
Posterior Amorphous Stromal Dystrophy (PASD) is a rare, inherited corneal condition
characterized by irregular, grayish, wave-like opacities in the posterior corneal stroma.
🧬 Inheritance and Onset
- Often present at birth or early childhood
- Passed down through autosomal dominant inheritance
🔍 Key Features
- Opacities are limited to the posterior central corneal stroma
- Appear as thin, gray, sheet-like hazes in a non-uniform pattern
- Normal stromal areas remain between the hazy regions
- Affected corneas may become thinner and flatter, causing hyperopia (farsightedness)
- Occasionally associated with iris abnormalities, though visual function is usually preserved
💊 Is Treatment Needed?
📌 Since vision is typically not significantly affected and the condition is non-progressive,
no treatment is usually required.
✅ Summary
- Rare, autosomal dominant inherited disorder
- Wave-like stromal opacities in the posterior cornea
- Can cause flattening of the cornea and hyperopia
- Generally harmless, with no need for treatment
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