Question:medium
Leucoria is seen in all of the following EXCEPT
Leucoria is seen in all of the following EXCEPT
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Leucoria is a white mass or membrane behind the lens; congenital glaucoma instead clouds the cornea itself.
Updated On: Jul 8, 2026
- Retinoblastoma
- Congenital glaucoma
- Persistent hyperplastic primary vitreous
- Fungal endophthalmitis
Show Solution
The Correct Option is B
Solution and Explanation
Step 1: Separate the four options by where the problem sits.
Retinoblastoma, PHPV and fungal endophthalmitis all put something white behind the lens, a tumour, a membrane, or pus like exudate. Light bounces off that white surface and comes back through the pupil as a white glow.
Step 2: Look at congenital glaucoma differently.
Congenital glaucoma raises the pressure inside the eye from birth, and the cornea reacts by swelling and turning hazy. This haze sits in the front window of the eye, not behind the lens, and the usual signs are a big watery eye that avoids light, not a white pupil reflex.
Step 3: Test each option against the definition of leucoria.
Leucoria strictly means light being reflected off a white structure located behind the lens, in the vitreous or on the retina. Corneal clouding blocks the view instead of reflecting it, so it fails this test.
Step 4: Group the true leucoria causes.
Retinoblastoma, PHPV, and fungal endophthalmitis all pass the test. Congenital glaucoma does not.
Step 5: Conclude.
Congenital glaucoma is the exception.
\[ \boxed{\text{Congenital glaucoma}} \]
Retinoblastoma, PHPV and fungal endophthalmitis all put something white behind the lens, a tumour, a membrane, or pus like exudate. Light bounces off that white surface and comes back through the pupil as a white glow.
Step 2: Look at congenital glaucoma differently.
Congenital glaucoma raises the pressure inside the eye from birth, and the cornea reacts by swelling and turning hazy. This haze sits in the front window of the eye, not behind the lens, and the usual signs are a big watery eye that avoids light, not a white pupil reflex.
Step 3: Test each option against the definition of leucoria.
Leucoria strictly means light being reflected off a white structure located behind the lens, in the vitreous or on the retina. Corneal clouding blocks the view instead of reflecting it, so it fails this test.
Step 4: Group the true leucoria causes.
Retinoblastoma, PHPV, and fungal endophthalmitis all pass the test. Congenital glaucoma does not.
Step 5: Conclude.
Congenital glaucoma is the exception.
\[ \boxed{\text{Congenital glaucoma}} \]
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