Abstract
Purpose :
The purpose of this study is to evaluate the change of the macula and optic disc area superficial vascular density after focal laser photocoagulation and panretinal photocoagulation using Optical Coherence Tomography Angiography.
Methods :
We conducted a retrospective chart review of 14 eye of 9 patients who underwent panretinal photocoagulation, and 17 eyes of 16 patient who underwent focal laser photocoagulation. Vascular density of the macula and optic disc area dividing into 9 areas were quantitatively measured using software in Optical Coherence Tomography Angiography. The changes of superficial vascular density were analyzed before laser photocoagulation, 1 week after, and 1 month after administration.
Results :
In 14 eyes undergoing panretinal photocoagulation, The average vascular density of the macula before treatment was 13.4±3.7 mm-1, 14.7±3.4 mm-1 after 1 week, and 13.8±3.9 mm-1 after one month of treatment. The average vascular density of the optic disc area before treatment was 14.7±5.1 mm-1, 14.2±5.2 mm-1 after 1 week, and 14.8±2.4 mm-1 after one month of treatment. In 17 eyes undergoing focal laser photocoagulation, The average vascular density in the treated area before treatment was 16.2±2.5 mm-1, 14.8±2.4 mm-1 after 1 week, and 14.4±3.0 mm-1 after one month of treatment. The larges change was observed in the center of the macula.
Conclusions :
The superficial vascular density of macular increased temporarily after the treatment of panretinal photocoagulation, but decreased afterwards. The Superficial vascular density of optic disc area decreased after laser treatment, but increased over time, which was higher than before laser treatment. In the focal laser photocoagulation, the superficial vascular density tended to decrease continuously in the treated area.
This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.