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Article
October 1989

Using Argon Laser Blue Light Reduces Ophthalmologists' Color Contrast SensitivityArgon Blue and Surgeons' Vision

Author Affiliations

From Moorfields Eye Hospital, London, England (Drs Berninger, Canning, Gündüz, Strong, and Arden); Universitäts-Augenklinik, Munich, West Germany (Dr Berninger); and University Eye Clinic, Konya, Turkey (Dr Gündüz).

Arch Ophthalmol. 1989;107(10):1453-1458. doi:10.1001/archopht.1989.01070020527032
Abstract

• Color contrast sensitivity was measured in laser operators before and after laser use. After argon blue-green laser treatment sessions, sensitivity was reduced for colors lying along a tritan colorconfusion line for several hours. This acute effect is due to specular "flashbacks" from the aiming beam off the surface of the contact lens. It is caused only by argon 488-nm light, when the aiming beam intensity is high. In addition, a correlation has been demonstrated between the number of years of laser experience and a chronic reduction in tritan color contrast sensitivity. It is suggested that repeated acute changes caused by the argon lasers may cause cumulative effects and produce a chronic threshold elevation. A simple method of eliminating the acute effect is documented.

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