<prompt> The periphery of the retina is visualized withIndirect binocular ophthalmoscopyDirect opthalmoscopyContact lensGoldmans three mirror contact lens  <response>: Periphery of retina is visualized by indirect ophthalmoscopy and central part is visualized by direct ophthalmoscopy.Other three options require some explanation here :-Slit-lamp biomicroscopic examination of the fundusThe slit lamp is a low - power microscope biomicroscope combined with a high-intensity light source slit-lamp that can be focused in a thin beam.Biomicroscopic examination of the fundus can be performed after full mydriasis using a slit-lamp and any of the following lenses :-Indirect slit-lamp biomicroscopyHruby lens biomicroscopyContact lens biomicroscopy can be performed by following lenses :- i Posteriorfundus contact lens modified koeppes lens, ii Golmanns three mirror contact lens.It is worth noting that slit-lamp biomicroscopy is usually used to examine the anterior segment of eye cornea, anterior chamber, lens, conjunctiva, sclera, eyelids where these structures are visualized without the need of these different type of lenses, required to examine the fundus.So, slit lamp biomicroscopy :-i Usually used to examine the anterior segment of the eye.ii Can also be used to examine the Hindus when combined with above-described lenses.So, Techniques of fundus examinationA OphthalmoscopyDirectIndirectDistant directB Slit-lamp biomicroscopic examination of the fundus by:-i Indirect slit lamp biomicroscopyii Hruby lens biomicroscopyiii Contact lens biomicroscopy 