A 20-year-old boy came with complaints of sudden pain in the left eye with loss of vision. On examination, left eye cornea was hazy and on looking down, there was a bulging in the lower eyelid. Retinoscopy shows scissoring reflex and oil drop sign was positive in both eyes, what is the diagnosis?
Correct Answer: Keratoconus
Description: Ans: (b) KeratoconusRef: Kanski, Clinical Ophthalmology, 8th edition, Page 218-220; A.K. Khurana's Comprehensive Ophthalmology, 6th edition, Page 131KERATOCONUSDefined as non-inflammatory bilateral ectactic condition of cornea in which the cornea assumes a conical shape secondary to stromal thinning and protrusion.The diagnosis is keratoconus with acute hydrops.Etiology: Not clear.Symptoms: Defective vision due to progressive myopia and irregular astigmatism.Signs:Window reflex is distorted.Slit lamp:Thinning and ectasia of cornea.Fleischer"s ring at the base of the cone.Vogt's line (deep stromal striae due to stretching of cornea).Retinoscopy: Scissoring/Yawning reflex.Distant direct ophthalmoscopy: Oil Droplet Reflex.Munson's Sign: Bulging of lower lid on downward gaze.Management:Spectacle correction in early cases.Rigid gas permeable contact lenses.Intra corneal ring segments (INTACS).Collagen cross linking.Deep anterior lamellar keratoplasty / penetrating keratoplasty.Remember:Acute hydrops is a complication of keratoconus where the descemet's membrane ruptures and aqueous enters the cornea.
Category:
Ophthalmology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now