Spectacle shown below is used in
Ans. (c) Bifocal for pediatric aphakiaRef: Diagnosis and Management of Ocular Motility Disorders by Alec M. Ansons, Helen Davis 3/e, p. 36These are straight type/ executive type bifocals with a central lie dissecting the visual axis, such that the top of the reading segment passes just below the middle of the pupil when the eye is in the primary position. Indicated in*Aphakia in children*As low vision aids in children*In selected cases of treatment od accommodative esotropia with convergence excessBifocals preferred in presbyopia/adults are usually D shaped
Bifocal for presbyopia
Bifocal for adult aphakia
Bifocal for pediatric aphakia
Progressive bifocal for presbyopia
Elementary Optics