Diabetic Retinopathy & Medical Retina - aioseducation
Diabetic Retinopathy & Medical Retina - aioseducation
Diabetic Retinopathy & Medical Retina - aioseducation
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70th AIOC Proceedings, Cochin 2012<br />
between September 2010 and July 2011 at <strong>Retina</strong> Foundation, Ahmedabad.<br />
This study was approved by the institutional review board, and informed<br />
consent was obtained from all patients.<br />
A diagnosis of acute CSC was made based on the presence of a serous<br />
detachment of the neurosensory retina, focal dye leakage on FA, and the<br />
duration of recent subjective symptoms within 3 months. Polypoidalchoroidal<br />
vasculopathy, which is sometimes difficult to differentiate from CSC by FA,<br />
was excluded by the absence of polypoidalchoroidal vascular lesions on<br />
indocyanine green angiography. Eyes with other macular abnormalities and<br />
neovascularlesions were excluded. A fundus examination, measurement of<br />
the best-corrected visual acuity (BCVA), and SD OCT imaging were performed<br />
atevery visit. Simultaneous fluorescein and indocyanine green angiography<br />
were performed using HRA.<br />
A fundus examination and measurement of the best-corrected visual acuity<br />
(BCVA) were performed at every visit. Simultaneous fluorescein angiography,<br />
indocyanine green angiography, autofluorescence and OCT were done in the<br />
first visit. OCT passing through the areas of leakage was taken as a reference<br />
and repeated later in each visit.<br />
Detailed horizontal OCT scans with 49 sections, 30 microns apart were passed<br />
through the site of leakage. An area of 15 deg x 5 deg on the retina was scanned.<br />
For simultaneous confocal scanning laser angiography, we inject 1.5 ml of the<br />
solution prepared from mixing 3 ml of 20% fluorescein to indocyanine green<br />
powder (25 mg). The mixture was injected as a bolus into the vein. After we<br />
recorded preinjection images,simultaneous angiograms were obtained during<br />
the early, mid and late phases.<br />
RESULTS<br />
Patient characteristics<br />
96 eyes of 48 patients of ICSC underwent imaging using spectralis of which<br />
included 43 males and 5 females. The mean age of the 48 patients was 40.8 years<br />
(range - 25 - 63). The duration of symptoms ranged from 2 days to 6 months. Three<br />
eyes had recurrent disease, and 8 patients had CSC in the fellow eye. The mean<br />
BCVA at baseline was 0.3(on log mar scale). Forty two eyes (75%) showed ink blot<br />
pattern of leakage, six eyes (10.7%) showed smokestack pattern and eight eyes<br />
(14.3%) showed no definite leak in angiogram. 34 eyes had one leakage point,<br />
seven eyes had two leakage points and three eyes had more than two leakage<br />
points. The indocyanine green angiography showed increased hyperfluorescence<br />
of the choroidal vein around the leakage site in all eyes.<br />
Mean number of examinations in the follow up period were 3.6 (range: 2-7).<br />
Laser photocoagulation was done in 30 patients.<br />
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