Evaluation of phototoxic retinal damage after argon laser iridotomy

Douglas Anderson, Robert W. Knighton, William J Feuer

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We performed several visual function tests in 17 eyes (ten patients) before and after argon laser iridotomy in an effort to detect diffuse photochemical damage to photoreceptors caused by exposure to the intense, blue-green light that is transmitted into the posterior segment as the iridotomy is created and enlarged. No change was detected in static threshold sensitivity in the central 30 degrees of the field (Octopus perimeter), color sensitivity (Farnsworth-Munsell 100-Hue test), or visual acuity. Contrast sensitivity showed a small increase at low spatial frequencies and a small decrease at high spatial frequencies. The latter change was small and not necessarily laser related, but precautions to limit laser exposure of the posterior pole are prudent.

Original languageEnglish
Pages (from-to)398-402
Number of pages5
JournalAmerican Journal of Ophthalmology
Volume107
Issue number4
DOIs
StatePublished - Apr 15 1989

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Argon
Lasers
Octopodiformes
Methyl Green
Contrast Sensitivity
Visual Acuity
Color

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Evaluation of phototoxic retinal damage after argon laser iridotomy. / Anderson, Douglas; Knighton, Robert W.; Feuer, William J.

In: American Journal of Ophthalmology, Vol. 107, No. 4, 15.04.1989, p. 398-402.

Research output: Contribution to journalArticle

Anderson, Douglas ; Knighton, Robert W. ; Feuer, William J. / Evaluation of phototoxic retinal damage after argon laser iridotomy. In: American Journal of Ophthalmology. 1989 ; Vol. 107, No. 4. pp. 398-402.
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