Accuracy of the smartphone-based nonmydriatic retinal camera in the detection of sight-threatening diabetic retinopathy

Prathiba, V and Rajalakshmi, R and Arulmalar, S and Usha, M and Subhashini, R and Gilbert, C E and Anjana, R M and Mohan, V (2020) Accuracy of the smartphone-based nonmydriatic retinal camera in the detection of sight-threatening diabetic retinopathy. Indian Journal of Ophthalmology, 68 (13). p. 42. ISSN 0301-4738



camera in the detection of diabetic retinopathy (DR) and sight‑threatening DR (STDR) in a tertiary eye care facility. Methods: Patients with diabetes underwent retinal photography with a smartphone‑based NM fundus camera before mydriasis and standard 7‑field fundus photography with a desktop mydriatic fundus camera after mydriasis. DR was graded using the international clinical classification of diabetic retinopathy system by two retinal expert ophthalmologists masked to each other and to the patient’s identity. The sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) to detect DR and STDR by NM retinal imaging were assessed. Results: 245 people had gradable images in one or both eyes. DR and STDR were detected in 45.3% and 24.5%, respectively using NM camera, and in 57.6% and 28.6%, respectively using mydriatic camera. The sensitivity and specificity to detect any DR by NM camera was 75.2% (95% confidence interval (CI) 68.1–82.3) and 95.2% (95%CI 91.1–99.3). For STDR the values were 82.9% (95% CI 74.0–91.7) and 98.9% (95% CI 97.3–100), respectively. The PPV to detect any DR was 95.5% (95% CI 89.8–98.5) and NPV was 73.9% (95% CI 66.4–81.3); PPV for STDR detection was 96.7% (95% CI 92.1–100)) and NPV was 93.5% (95% CI 90.0–97.1). Conclusion: Smartphone‑based NM retinal camera had fairly high sensitivity and specificity for detection of DR and STDR in this clinic‑based study. Further studies are warranted in other settings.

Item Type:Article
Official URL/DOI:
Uncontrolled Keywords:Nonmydriatic fundus photography, sight‑threatening diabetic retinopathy, smartphone retinal imaging
Subjects:Diabetology > Retino Diabetology
Divisions:Department of Opthalmology
ID Code:1148
Deposited By:surendar radha
Deposited On:24 Jan 2020 15:34
Last Modified:24 Jan 2020 15:34

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