Reversible changes of visual acuity and pattern-electroretinograms after blue-green argon laser photocoagulation of diabetic patients.
Visual acuity, color vision, pattern-visual-evoked-potentials (P-VEPs) and pattern-electroretinograms (P-ERGs) were measured in 13 diabetic subjects before, and 24 hours and 5 weeks after blue-green argon laser treatment. As control, the same examinations were performed in 7 normal subjects and 7 diabetic patients before and after slit lamp examination with the Goldman three mirror contact lens. Visual acuity and P-ERG amplitudes were significantly reduced one day after the laser treatment, while 5 weeks after the laser coagulation, visual acuity and P-ERG amplitudes recovered to pretreatment values. The control group showed no significant changes after slit lamp examination. Since fluorescein angiography revealed no macular changes after laser treatment, the possibility of a reversible functional light damage after blue-green argon laser coagulation (ALC) is discussed.
Gottlob
I
I
I. University Eye Clinic Vienna, Austria.
Prskavec
F H
FH
Stelzer
N
N
Hienert
I
I
Weghaupt
H
H
Radda
T M
TM
D000368:Aged; D000369:Aged, 80 and over; D001128:Argon; D003930:Diabetic Retinopathy / Q000503:physiopathology / Q000601:surgery*; D004596:Electroretinography / Q000379:methods; D005074:Evoked Potentials, Visual; D005260:Female; D006801:Humans; D053685:Laser Therapy; D008028:Light Coagulation; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D014792:Visual Acuity
D001128:Argon