Short-term Clinical Outcome of Patterned Scanning Laser Photocoagulation With Short Exposure Time in Diabetic Retinopathy.
10.3341/jkos.2009.50.3.376
- Author:
Bum Joo CHO
1
;
Tae Wan KIM
;
Se Joon WOO
;
Hum CHUNG
;
Jang Won HEO
Author Information
1. Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea. hjwin@lycos.co.kr
- Publication Type:Original Article
- Keywords:
Panretinal photocoagulation;
Patterned scanning laser photocoagulation
- MeSH:
Diabetic Retinopathy;
Eye;
Fluorescein Angiography;
Follow-Up Studies;
Humans;
Light Coagulation;
Macular Edema;
Prospective Studies;
Retina;
Visual Acuity;
Vitreous Hemorrhage
- From:Journal of the Korean Ophthalmological Society
2009;50(3):376-382
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To investigate the clinical effect and complications of patterned scanning laser photocoagulation with short exposure time in diabetic retinopathy. METHODS: A prospective study was performed on patients with diabetic retinopathy who required panretinal photocoagulation (PRP). Twenty-nine eyes of twenty five consecutive patients underwent patterned scanning laser photocoagulation with exposure time of 0.02 sec over the entire retina. Pain score at treatment, best-corrected visual acuity, the development of macular edema, regression of neovascularization in fluorescein angiography, and related complications were monitored during a three-month follow-up. RESULTS: Treatment time for PRP was much reduced to 6.1 min on the entire retina. Pain during the photocoagulation was moderate, and enabled patients to finish PRP with ease. During a three-month follow-up, visual acuity was well preserved. Foveal minimum thickness increased at 1 month after treatment and maintained in a study period of three months. Macular volume showed significant increase (3.6%) at 1 month after treatment, maximum increase (9.8%) at 2 months, and persistent increase (4.9%) at 3 months. In every patient with very severe nonproliferative diabetic retinopathy, retina was maintained, and in 10 of 18 eyes with proliferative diabetic retinopathy, neovascularization regressed during follow-up period. No significant complication occurred except a transient vitreous hemorrhage in one eye. CONCLUSIONS: Patterned scanning laser photocoagulation with short exposure time may induce transient macular edema, but the visual acuity was preserved without any other significant complication. It is considered to be a safe and efficient treatment method in diabetic retinopathy.
