OCT angiography is a recent evaluation of OCT technology which combines the structural assessment of ocular tissues obtained by OCT image with visualization of blood flow within the vessels in imaged area. So combined structural and function image can be obtained by OCT angiography.
Defferent type of uveitis often have specific OCT \& OCT angiography findingwhich deffer according to the involved ocular tissue and according to the type of inflammatory / infectious process that characterize them.
The aim of study is to determine the role of OCT \& OCT angiography in assessment of retinal and choroidal architectural and vascular changes in patients with posterior uveitis.
- Patient age of greater than 18 years old.
Patient can offer viable consent.
Patient with posterior uveitis (infectious or non-infectious posterior uveitis).
- Patient unable to offer viable consent.
Patient unwilling to participate.
Any coexistence retinal pathology: diabetic retinopathy, other causes of retinal vascular occlusion, traumatic retinopathy, traumatic maculopathy, other peripheral ischemic retinopathy e.g. sickles cell retinopathy.
Presence of media opacity hindering appropriate scan.
participants will be recruited from the ophthalmology outpatient clinic of Assiut University Hospitals.- Patient with posterior uveitis (infectious or non-infectious posterior uveitis).
Case-only
Cross-sectional
Not listed
the choroidal thickness (CT) measurements
The choroidal thickness (CT) measurements will be obtained from manual segmentation of OCT B-scans at the fovea for case numbers 1, 2, 4 and 5 and at the location of the choroiditis lesion
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