Diabetic Retinopathy and OCT-A Changes Post-cataract Surgery
Diabetic Retinopathy and OCT-A Changes Post-cataract Surgery
The purpose of this study is to use optical coherence tomography angiography (OCT-A) to
 compare retinal vasculature after uncomplicated cataract surgery in patients with and without
 diabetic retinopathy.
Patients undergoing cataract surgery who provided informed consent were enrolled in the
 study. There were three comparison groups: control, diabetic retinopathy (DR) and diabetic
 macular edema (DME) groups. Optical coherence tomography angiography (OCT-A) scans measuring
 retinal thickness, vessel density, perfusion density, and foveal avascular zone were obtained
 at baseline and postoperative week one, month one and month three.
Inclusion Criteria:

 -  All patients at Uptown Eye Specialists undergoing uneventful cataract surgery who have
 provided informed consent to the study.

 Exclusion Criteria:

 -  Other ocular co-morbidities such as axial length < 22.0 mm or > 25.0 mm, previous
 ocular surgeries, previous history of uveitis, previous ocular trauma, cornea
 pathologies or glaucoma, intraocular pressures over 22 mmHg

 -  In groups 1 and 2: previous retinal laser treatments

 -  OCT-A signal strength < 6

 -  Use of multifocal intraocular lens

 -  Second eye (if first eye recruited)

 -  In Group 1: No diabetes mellitus as past medical history