Patients with non-proliferative and proliferative diabetic retinopathy with clear media will be recruited.

Patients with different grades of myopia, with accurate segmentation will be recruited

Patients with active choroidal vascularization without scarring will be recruited

Healthy individuals without retinal disorders will be included for comaprison

Diabetic Retinopathy

Myopia

Choroidal Neovascularization

Healthy

patients in all groups will be examined with optical coherence tomography angiography, for every eye 3 macular and 3 papillary scans will be performed by two different OCTA machines, analysis will be carried out to evaluate the repeatability and reproducibility of the test

Optical coherence tomography angiography

Ophthalmology Department, Faculty of medicine, Tanta Univeristy

OCTA Metrics Repeatability and Reproducibility in Different Disorders

Evaluation of the Repeatability and Reproducibility of Different Quantitative Optical Coherence Tomography Angiography Metrics in Retinal Disorders

ICC is the correlation between two variables measured at the same time point, with values ranging from 0 to 1 (<0.40, poor; 0.40-0.59, fair; 0.60-0.74, good; 0.75-1.00, excellent).

The CV (%) will be calculated as 100 × standard deviation/overall mean, and a value <10% represents good repeatability of the measurement.

optic disk drusen/edema

OCTA Metrics Repeatability and Reproducibility in Different Disorders

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