Dr.Chaitali Patel, Dr.Sayan Basu
Optical coherence tomography angiography (OCTA) is a quick and non-invasive diagnostic tool to image the retinal vasculature. However, by attaching an anterior segment lens adapter and tweaking the machine-parameters it is possible to reliably perform ocular surface angiography (OSA). This instructional OSA video will guide viewers through the techniques of image acquisition and post-processing, using a simple Image J software-based algorithm. Hence, it will not only help obtain good quality images but also help quantify the surface vasculature for objective analysis. The video will also demonstrate the potential applications of OSA in ocular surface burns, corneal neovascularization, partial and total limbal stem cell deficiency, post-surgical healing and pharmacotherapy. This novel, reliable and replicable OSA technique could significantly advance clinical research by improving our understanding of ocular surface pathologies and objectively monitoring potential therapies.
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