The periphery of the retina is visualized with
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
Indirect binocular ophthalmoscopy
Direct ophthalmoscopy
Contact lens
Goldman's three mirror contact lens
Anatomy, Development and clinical examination