Abstract

Magnifications of 2-4× can be achieved by utilizing a strong negative intraocular lens together with a positive spectacle lens.¹ The advantage of this system over conventional telescopic low-vision aids is that for a given magnification the ocular telephoto system provides a significantly larger field of view. For near tasks such as reading, the system can provide greater magnification at a given working distance than can simple magnifiers or magnifying spectacle lenses. Potential problems are discussed, including IOL decentration and patient disorientation due to disparate magnifications in the two eyes. The magnification or the field of view can be simulated before surgery by using a strong negative contact lens together with a positive spectacle lens. The type of patient most likely to be helped by the ocular telephoto system has stable macular disease, substantially reduced visual acuity, difficulty utilizing conventional low-vision aids, and a strong desire to perform near tasks such as reading or computer terminal work.

© 1985 Optical Society of America