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Am Orthopt J. 2009;59:93-7. doi: 10.3368/aoj.59.1.93.

Management of binocular diplopia due to maculopathy with combined bangerter filter and fresnel prism.

The American orthoptic journal

Ida L Iacobucci, Bruce A Furr, Steven M Archer

Affiliations

  1. From the W. K. Kellogg Eye Center, University of Michigan, Ann Arbor, Michigan.

PMID: 21149194 DOI: 10.3368/aoj.59.1.93

Abstract

PURPOSE: To describe treatment of binocular diplopia due to maculopathy with a combination of Bangerter foil and Fresnel prism. Methods and Case Report: A protocol for prescribing a combination of Bangerter foil and Fresnel prism is described. A series of three patients in whom a Bangerter foil or prism alone were ineffective for binocular diplopia due to maculopathy, along with a detailed case report of one of these patients, illustrates how a combination of both were used to treat the diplopia.

CONCLUSIONS: Fogging is presumed to relieve binocular diplopia due to maculopathy by inducing a functional central scotoma in the affected eye. In some patients, prism correction is needed in addition to a Bangerter foil to eliminate diplopia, possibly by impoving superimposition of the scotoma in the affected eye and the fovea of the sound eye.

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