What is the correlation between the clinical, OCT and FA fin
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Background
Macular edema is an important cause of visual morbidity in diabetic retinopathy. It can be assessed by both fluorescein angiography (FA) and optical coherence tomography (OCT).

Aims
To study, if any, correlation exists between FA and OCT patterns in Clinically significant macular edema (CSME). Furthermore, to correlate macular thickness as determined by OCT to best-corrected visual acuity (BCVA).

Materials and Methods
This was a prospective study which compared patterns in FA and OCT in patients with CSME. All the patients who were diagnosed as CSME underwent a complete ophthalmic examination and were subjected to FA and OCT. Those with a hazy media were excluded from the study. The results were analyzed by Fisher's exact test.

Results
A total of 32 eyes were studied. FA revealed that most of the patients had diffuse leak (59%), followed by focal leak (31%) and combined leak (10%). On OCT, isolated sponge-like retinal swelling was seen among 66% eyes, spongy retinal swelling with cystoid macular edema/serous foveal detachment in 28% eyes, and 6% had a combined pattern. There was a statistical correlation between FA and OCT findings in our study (P = 0.038). The mean central foveal thickness in our study was 321.75 98.30 ?m, and there was a statistically significant correlation between central foveal thickness and BCVA (P = 0.043).

Conclusion
There is a significant correlation between OCT and FA findings for CSME. Furthermore, the foveal thickness correlates to BCVA.

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