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What is A patient presents to the emergency department with uniocular diplopia. Examination with oblique illumination shows golden crescent while examination with co-axial illumination show a dark crescent line. Which of the following is the most likely diagnosis? and explain in detail?
Ans. (d) Ectopia lentisRef: 'Ophthalmology by Khurana (2005)/p. 25; 'Clinical Examination in Ophthalmology' by Mukherjee (2006)/166; Neema 6/e, p. 285, 286Presence of uniocular diplopia together with finding of golden crescent on oblique illumination (edge of subluxated lens) or black crescent line on co-axial illumination (edge of subluxated lens) suggests a diagnosis of 'Subluxation' of the crystalline lens.