Question

A patient presents with a gradual loss of night vision and peripheral vision. What is the most likely diagnosis based on fundoscopy findings? 

• A. Retinitis pigmentosa
• B. Retinal hemorrhage
• C. Diabetic retinopathy
• D. Hypertensive retinopathy

Hint:

In cases of gradual vision loss, especially with night blindness and peripheral vision loss, think of retinitis pigmentosa. Early diagnosis and genetic counseling are key.

Answer 1

The Correct Option is A

The patient in question presents with symptoms of gradual loss of night vision and peripheral vision. To determine the most likely diagnosis, we utilize a fundoscopy, which examines the fundus (the interior surface of the eye) for specific findings. Each potential diagnosis can be ruled in or out based on characteristic fundoscopy findings:

• Retinitis pigmentosa: On fundoscopy, this hereditary condition typically presents with bone spicule-shaped pigmentation, attenuated retinal vessels, and a waxy pallor of the optic disc. These findings correlate with the patient's symptoms of night blindness and peripheral vision loss.
• Retinal hemorrhage: In this condition, fundoscopy would reveal bleeding spots in different retinal layers, not necessarily linked to the presented symptoms.
• Diabetic retinopathy: This would show microaneurysms, hemorrhages, exudates, and possibly neovascularization, related more directly to systemic diabetes and not commonly leading to early night-blindness.
• Hypertensive retinopathy: Characterized by microvascular changes like arterial narrowing and cotton wool spots, this condition usually coincides with systemic hypertension.

The clinical description and the expected finding of bone spicules on fundoscopy make Retinitis pigmentosa the most likely diagnosis.