Retina & Vitreous · NEET PG Preparation Ophthalmology
A premature infant born at 28 weeks of gestation with a birth weight of 1100 grams is evaluated for retinopathy of prematurity (ROP). Which zone corr…
Practice question from Retina & Vitreous (NEET PG Preparation Ophthalmology), with the correct answer and a step-by-step solution.
hard · MCQ · Q-38BA15
A premature infant born at 28 weeks of gestation with a birth weight of 1100 grams is evaluated for retinopathy of prematurity (ROP). Which zone corresponds to the innermost zone centered on the fovea, representing the highest risk for aggressive disease?
- A.Zone ICorrect answer
- B.Zone II
- C.Zone III
- D.Zone IV
Solution
In retinopathy of prematurity, Zone I is the most posterior zone. It is defined as a circle with a radius extending from the center of the disc to twice the distance from the fovea to the center of the optic disc. Disease located in Zone I carries a significantly higher risk of progression and adverse outcomes.
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