TY - JOUR
T1 - Functional deficits resulting from laser-induced damage in the rat retina
AU - Ben-Shlomo, Gil
AU - Belokopytov, Mark
AU - Rosner, Mordechai
AU - Dubinsky, Galina
AU - Belkin, Michael
AU - Epstein, Yoram
AU - Ofri, Ron
PY - 2006/8
Y1 - 2006/8
N2 - Background and Objectives: To determine the threshold for electrophysiological detection of functional changes after laser photocoagulation in rats, and to correlate the functional damage with retinal morphology. Study Design/Materials and Methods: Argon-laser lesions, covering a quarter or half of the retina, were produced in the right eyes of 25 rats. Eyes were evaluated by flash electroretinography (ERG) and histologically at 3, 21, and 60 days after lasering. Results: Lasering of half the retina, but not of a quarter, produced a significant decrease in signals at all time points. Some functional recovery was evident 60 days after injury, and was consistent with concurrent morphological healing. Conclusions: In rats, lasering of half the retina, but not a quarter, leads to significant deficits in outer retinal functions over a 2-month period. Thereafter some recovery occurs, presumably as a result of migration of photoreceptors from undamaged areas and their retinal remodeling.
AB - Background and Objectives: To determine the threshold for electrophysiological detection of functional changes after laser photocoagulation in rats, and to correlate the functional damage with retinal morphology. Study Design/Materials and Methods: Argon-laser lesions, covering a quarter or half of the retina, were produced in the right eyes of 25 rats. Eyes were evaluated by flash electroretinography (ERG) and histologically at 3, 21, and 60 days after lasering. Results: Lasering of half the retina, but not of a quarter, produced a significant decrease in signals at all time points. Some functional recovery was evident 60 days after injury, and was consistent with concurrent morphological healing. Conclusions: In rats, lasering of half the retina, but not a quarter, leads to significant deficits in outer retinal functions over a 2-month period. Thereafter some recovery occurs, presumably as a result of migration of photoreceptors from undamaged areas and their retinal remodeling.
KW - Electroretinogram
KW - Laser
KW - Retinal injury
KW - Wound healing
UR - http://www.scopus.com/inward/record.url?scp=33748062326&partnerID=8YFLogxK
U2 - 10.1002/lsm.20351
DO - 10.1002/lsm.20351
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C2 - 16868934
AN - SCOPUS:33748062326
SN - 0196-8092
VL - 38
SP - 689
EP - 694
JO - Lasers in Surgery and Medicine
JF - Lasers in Surgery and Medicine
IS - 7
ER -