The periphery of the retina is visualized with: (A) Indirect binocular ophthalmoscopy, (B) Direct ophthalmoscopy, (C) Contact lens, (D) Goldman's three mirror contact lens
Answer is A. The technique of examining the fundus of the eye is called ophthalmoscopy. In indirect ophthalmoscopy, a real and inveed image is formed between the condensing lens and the observer. The advantage of stereopsis (depth perception) and a larger field of view makes indirect ophthalmoscope (IDO) more useful both in retina clinics and during posterior segment surgeries. Reference : A K KHURANA Comprehensive Ophthalmology; edition 4; page-567