Expansion of a teleophthalmology program for diabetic retinopathy screening during the COVID19 pandemic

ABSTRACT

Purpose: The COVID-19 pandemic prompted efforts to encourage social distancing and minimize non-urgent in-person eye care. Here, we report the outcomes of a teleophthalmology program for diabetic retinopathy screening at an integrated health system in California that was expanded during the pandemic. Methods: We performed a retrospective review of patients who underwent remote retinal imaging as part of a teleophthalmology program for diabetic retinopathy (DR) screening using Current Procedural Terminology (CPT) codes 92227 and 92228 at the University of California, Davis Health system between May 31st , 2019 and June 8th , 2021. Retinal images were captured at primary care locations using a Topcon NW400, Nikon RetinaStation, or Optos Primary fundus cameras, and image grading were performed by trained ophthalmologists or optometrists using a store-and-forward method. Patient records were reviewed to collect demographic, follow-up, and clinical outcomes information. Results: During COVID19 pandemic, the teleophthalmology program screened 570 individuals (mean age 63.2 ± 13.7). There was a significant increase in the number of patients screened per month prior to and following the COVID-19 lock-down in March 2020 (5.0 ± 3.1 patients screened per month prior to and 39.1 ± 34.8 patients per month following, P = 0.0004). Among these, 204 patients received a recommendation for in-person eye care referral, of which 127 received a referral to the UC Davis Eye Center, 85 appointments were scheduled, and 82 patients were followed in person, with a median time of 108 days between screening and in-person follow-up. Follow-up rates were generally lower during the initial months after the pandemic and increased over time. Among the patients who followed in person (mean age 63.9 ± 13.8), 10% of eyes had mild non-proliferative DR (NPDR), 5% had moderate NPDR, 3% had severe NPDR, 2% had PDR, and 4% had diabetic macular edema (DME), with similar proportions before and after the COVID-19 lockdown. Conclusions: Expansion of a teleophthalmology program during the COVID19 pandemic demonstrated improved DR screening rates, increased referrals, and improved follow-up for diabetic eye care at an integrated health system in Northern California.