Which finding is most characteristic of collie eye anomaly?

Which finding is most characteristic of collie eye anomaly?

• A. Choroidal hypoplasia (most common) and scleral exposure causing whiteness lateral to the optic nerve head
• B. Tortuous retinal vessels
• C. Optic nerve coloboma
• D. /+ retinal detachment

Answer: (A)

Collie eye anomaly is a congenital defect that mainly affects the choroid and sclera. The most characteristic finding is choroidal hypoplasia, meaning the choroid is underdeveloped. This thinning often leads to scleral exposure, so you see a pale, whitish area just lateral to the optic nerve head on the fundus. That pale patch is a classic clue pointing to CEA. Other findings like tortuous retinal vessels, optic nerve coloboma, or retinal detachment can occur with CEA, especially in more severe cases or as secondary issues, but they are not as defining or as consistently present as the choroidal hypoplasia with scleral exposure near the optic nerve.

Collie eye anomaly is a congenital defect that mainly affects the choroid and sclera. The most characteristic finding is choroidal hypoplasia, meaning the choroid is underdeveloped. This thinning often leads to scleral exposure, so you see a pale, whitish area just lateral to the optic nerve head on the fundus. That pale patch is a classic clue pointing to CEA.

Other findings like tortuous retinal vessels, optic nerve coloboma, or retinal detachment can occur with CEA, especially in more severe cases or as secondary issues, but they are not as defining or as consistently present as the choroidal hypoplasia with scleral exposure near the optic nerve.