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مقاله
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Abstract
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Title:
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Effects of Panretinal Photocoagulation on Retinal Vasculature and Foveal Avascular Zone in Diabetic Retinopathy Using Optical Coherence Tomography Angiography
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Author(s):
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Fariba Ghassemi, Kaveh Fadakar MD, Reza Mirshahi MD-MPH, Fatemeh Bazvand MD, Ahmad Mirshahi MD
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Presentation Type:
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Oral
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Subject:
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Posterior Segment
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Others:
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Presenting Author:
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Name:
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Kaveh Fadakar sogeh
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Affiliation :(optional)
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Farabi Eye Hospital, Tehran University of Medical Sciences
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E mail:
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kaveh.fadakar@gmail.com
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Phone:
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Mobile:
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09125209087
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Purpose:
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This investigation evaluates retinal hemodynamics using optical coherence tomography angiography (OCTA) in patients with diabetic retinopathy following pan-retinal photocoagulation (PRP).
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Methods:
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Eleven eyes of 7 Patients with severe nonproliferative diabetic retinopathy (NPDR) or early proliferative diabetic retinopathy (PDR) were recruited in this prospective interventional pilot study. All patients underwent OCTA imaging at baseline and flow surface area, foveal avascular zone, retinal thickness, and vascular density were measured at baseline. Three months after treatment, OCTA was repeated and the alteration in variables was analyzed by generalized estimating equation model.
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Results:
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A reduction in FAZ area was observed following treatment, especially at the deep layer. Retinal thickness increased along with an increase in vascular density in superficial and deep fovea area, and the macular temporal sector. Flow surface area was relatively unchanged.
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Conclusion:
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OCTA is a promising method to evaluate retinal hemodynamic. PRP results in increasing of vascular density and probably reduce ischemia in the fovea, as measured by a reduction in FAZ size.
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Attachment:
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