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June 1989

Corneal Decompensation After Argon Laser Iridectomy

Author Affiliations

Pittsburgh, Pa

Arch Ophthalmol. 1989;107(6):792. doi:10.1001/archopht.1989.01070010814010

To the Editor.  —We have had the pleasure of reading the article by Schwartz et al1 in the November 1988 issue of the Archives regarding corneal decompensation after argon laser iridectomy. Although all of us have seen corneas occasionally decompensate after an attack of angle closure glaucoma or after surgical procedures, our experience suggests less of a risk of developing bullous keratopathy than Schwartz et al have proposed.Our initial experience of performing iridectomies with the argon laser using the parameters mentioned in the article produced significant corneal burns at both the epithelial and endothelial levels. However, when we reduced the exposure time from 0.1 to 0.2 seconds to 0.02 to 0.05 seconds we eliminated almost all of the corneal damage.2 The argon laser iridectomies were done using the Abraham iridectomy lens. We then performed specular microscopy on those eyes in which the shorter exposure times were used

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