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August 1984

Negative-Lens Field Expander for Patients With Concentric Field Constriction

Author Affiliations

From the Eye Research Institute of Retina Foundation and Retina Associates, Boston. Dr Avila is now with the Vitreoretinal Unit, Instituto de Olhos de Goiania, Goiania, Brazil.

Arch Ophthalmol. 1984;102(8):1182-1184. doi:10.1001/archopht.1984.01040030960025

• An oversized, negative-power spectacle lens may be used as a field expander to improve mobility and general orientation ability of patients with peripheral field loss but intact central vision. The device is inexpensive and simple to use for brief spotting periods.