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Red glasses and visual function in retinitis pigmentosa.

T J Van den Berg¹

¹The Netherlands Ophthalmic Research Institute, Amsterdam.

Documenta Ophthalmologica. Advances in Ophthalmology

|November 1, 1989

Summary

Red glasses offer limited benefits for retinitis pigmentosa (RP) patients, with some improvements in dark adaptation and visual acuity. However, they can worsen color vision and do not appear to be a significant therapeutic aid for RP.

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Area of Science:

Ophthalmology
Vision Science

Background:

Reduced light therapy has been explored for retinitis pigmentosa (RP) with limited success.
RP patients have reported subjective visual improvements using red glasses.

Purpose of the Study:

To objectively evaluate the efficacy of red glasses in improving visual function for patients with retinitis pigmentosa.

Main Methods:

Five visual functions were assessed: visual acuity, contrast sensitivity, color vision, visual fields, and dark adaptation.
Tests were conducted with and without the use of red-tinted glasses.

Main Results:

A small improvement in visual acuity and contrast sensitivity was noted in one volunteer.
Color vision generally deteriorated, and visual fields showed mixed results (slight improvement or deterioration).
Dark adaptation improved when red glasses aided the Trendelenburg method (rod function), but cone function remained unchanged.

Conclusions:

Red glasses do not appear to offer substantial benefits for most retinitis pigmentosa patients.
Apart from potential reduction in color discrimination, wearing red glasses does not seem to pose significant disadvantages for RP patients.

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