Visual Outcomes Following Phacoemulsification Cataract Surgery in Diabetic Patients
Australian investigators assessed cataract surgery visual outcomes 12 months postoperatively in patients with diabetes, with or without diabetic retinopathy (DR), compared to patents without diabetes.
They followed 1,192 cataract surgical patients aged ≥65 for 12 months postoperatively and took standardized pre- and postoperative pinhole logMAR visual acuity (VA) measurements. Additionally, they determined mean VA improvement by comparing VA after 12 months to preoperative VA.
According to the investigators, of 1,192 surgical patients, 324 (27.2%) had diabetes, of whom, 136 (42.0%) had DR and after adjusting for age, gender, diabetes duration and preoperative pinhole VA, the average VA gained 12 months after surgery was 10.8 letters among 868 patients without diabetes, 10.6 letters among 188 patients with diabetes but no DR, 10.0 letters among 95 patients with DR but no past laser treatment, and no letters among 41 patients with DR plus past laser treatment (p<0.0001, compared to the other three groups). Moreover, they associated diabetes duration ≥20 years with mean VA gain of 3 fewer letters than duration <10 years (7 versus 10 letters, p=0.023), after adjusting for age, gender, DR and preoperative pinhole VA.
Cataract surgery improved VA by an average two lines for patients both with and without diabetes, or with DR but no past laser treatment, the investigators concluded. No significant VA improvement was evident for patients who had preoperative DR and laser therapy.