Panretinal laser photocoagulation for proliferative diabetic retinopathy: the effect of laser wavelength on macular function

The effect on macular function of the wavelength of laser light used to treat proliferative diabetic retinopathy was studied. Thirty-six eyes of 25 patients received panretinal photo-coagulation according to a standardised protocol and before and at intervals after the treatment were tested by a bat...

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Bibliographic Details
Published in:British journal of ophthalmology 1991-10, Vol.75 (10), p.608-610
Main Authors: Canning, C., Polkinghorne, P., Ariffin, A., Gregor, Z.
Format: Article
Language:English
Subjects:
Adult
Aged
Biological and medical sciences
Diabetic Retinopathy - surgery
Humans
Light Coagulation - adverse effects
Light Coagulation - methods
Macula Lutea - physiopathology
Macula Lutea - radiation effects
Medical sciences
Middle Aged
Retina - surgery
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Surgery of the eye and orbit
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Summary:The effect on macular function of the wavelength of laser light used to treat proliferative diabetic retinopathy was studied. Thirty-six eyes of 25 patients received panretinal photo-coagulation according to a standardised protocol and before and at intervals after the treatment were tested by a battery of macular function tests. Each eye was randomly assigned to treatment with blue-green, yellow, or orange laser. The tests included best corrected visual acuity, colour vision, contrast sensitivity, macular threshold, and central visual fields. There were no significant differences in the results of these tests between the three treatment groups, though there was wide scattering of baseline values within each group. Laser wavelength has not been shown to be an important determinant of central visual function following panretinal photo-coagulation in patients with proliferative diabetic retinopathy within the wavelengths tested.
ISSN:0007-1161
1468-2079
DOI:10.1136/bjo.75.10.608