Document Detail


Prophylactic laser treatment in early age related maculopathy reduced the incidence of exudative complications.
MedLine Citation:
PMID:  9924306     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
AIM: To investigate the effect of prophylactic laser treatment on drusen area and incidence of exudative lesions in patients with soft drusen maculopathy. METHODS: In a prospective study, patients with early age related maculopathy (ARM) and good visual acuity were randomized to laser treatment or to a control group. Each group consisted of two subgroups: a fellow eye group and a bilateral drusen group. At 3 years, 36 of 38 enrolled patients remained in the study. Photocoagulation was performed with an argon green laser, approximately 100 mild laser burns being placed on and between the drusen in a perifoveal temporal horseshoe-shaped area. Both cases and controls were subjected to fundus colour photographs and fluorescein angiograms at regular intervals, and the drusen area was calculated in both photographs and angiograms. At baseline, there were no significant differences (p > 0.3-0.8) in drusen area between the groups. RESULTS: In the treatment group, mean drusen area decreased significantly in the fundus photographs as well as in the angiograms (p < 0.001). Visual acuity and colour contrast sensitivity (CCS) did not change significantly. All these results are valid also for the subgroups. In the control group, however, mean drusen area increased significantly (p < 0.001). Mean visual acuity decreased significantly (p < 0.01) as did the colour contrast sensitivity along the tritan axis (p = 0.02). For the fellow eye control group (n = 7), the increase in drusen area in fundus photographs and the decrease in CCS along the tritan axis were not statistically significant (p = 0.57 and p = 0.37, respectively). Furthermore, at 3 years, five patients in the control group showed exudative lesions (1/7 in the fellow eye group and 4/12 in the bilateral drusen group), whereas no such complications occurred in the treatment group. One patient developed a small atrophy, however. Thus, there is now a significant difference (p = 0.047), however with a large 95% confidence interval, 0.06-0.46, regarding exudative complications between the treated group and the control group in our small patient material. CONCLUSION: Perifoveal mild laser treatment causes a reduction in drusen area in patients with soft drusen maculopathy and may lower the incidence of exudative lesions.
Authors:
C Frennesson; S E Nilsson
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The British journal of ophthalmology     Volume:  82     ISSN:  0007-1161     ISO Abbreviation:  Br J Ophthalmol     Publication Date:  1998 Oct 
Date Detail:
Created Date:  1999-02-08     Completed Date:  1999-02-08     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0421041     Medline TA:  Br J Ophthalmol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1169-74     Citation Subset:  IM    
Affiliation:
Department of Ophthalmology, Linköping University, Sweden.
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MeSH Terms
Descriptor/Qualifier:
Aged
Color Perception / physiology
Contrast Sensitivity / physiology
Female
Fluorescein Angiography
Humans
Laser Coagulation / adverse effects,  methods*
Macular Degeneration / physiopathology,  surgery*
Male
Prospective Studies
Retinal Drusen
Treatment Outcome
Visual Fields / physiology
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