A Longitudinal Study of Choroidal Changes After Cataract Surgery in Eyes With Diabetic Retinopathy

A Longitudinal Study of Choroidal Changes Assessed With Swept-source Optical Coherence Tomography After Cataract Surgery in Eyes With Diabetic Retinopathy

To determine the influence of phacoemulsification on choroidal vasculature in patients with diabetic retinopathy (DR) undergoing cataract surgery

To determine the influence of phacoemulsification on choroidal vasculature in patients with diabetic retinopathy (DR) undergoing cataract surgery through the follow-up of choroidal thickness (CT) and choroidal vascularity index (CVI) using swept-source optical coherence tomography (SS-OCT) system.

Inclusion Criteria:

• aged⩾40years; intraocular pressure (IOP) < 21 mm Hg in both eyes, spherical refractive error<6 diopters spherical equivalent.

Exclusion Criteria:

• previous retinal surgery, glaucoma, uveitis, age-related macular degeneration, arterial or vein occlusions, macular hole, or other ocular diseases that could interfere the CT and/or CVI measurement, severe systemic diseases, such as uncontrolled hypertension, obstructive sleep apnea, etc.