Validation of Smartphone-Based Retinal Photography for Diabetic Retinopathy Screening
| Autor: | Jean Claude Mbanya, Oliver Nkengfack, Andre Michel Bimbai, Odile Pascale Nga Obama, Ashish Sharma, Godefroy Koki, Caroline Mvilongo, Yannick Bilong, Giles Kagmeni, Hermann Rossi Ngoufo Fofe, Eugene Sobngwi, Jean Claude Katte, Lucienne Assumpta Bella, Wilfred Fon Mbacham |
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| Rok vydání: | 2019 |
| Předmět: |
Male
medicine.medical_specialty Retina 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Ophthalmology Diabetes mellitus medicine Photography Humans Mass Screening Macular edema Retrospective Studies Diabetic Retinopathy Tropicamide business.industry Diabetic retinopathy screening Reproducibility of Results Retrospective cohort study Retinal Diabetic retinopathy Equipment Design Middle Aged medicine.disease eye diseases medicine.anatomical_structure Cross-Sectional Studies chemistry 030221 ophthalmology & optometry Female Smartphone business medicine.drug |
| Zdroj: | Ophthalmic surgery, lasersimaging retina. 50(5) |
| ISSN: | 2325-8179 |
| Popis: | BACKROUND AND OBJECTIVE: Screening for diabetic retinopathy (DR) is cost-effective when compared with disability loss for those who go blind in the absence of a screening program. We aimed to evaluate the sensitivity and specificity of a smartphone-based device for the screening and detection of DR. PATIENTS AND METHODS: A cross-sectional study of 220 patients with diabetes (440 eyes, all patients age 25 years or older) was completed. Tropicamide 0.5% was used for iris dilation followed by an indirect ophthalmoscopy using a 20-D lens. Retinal images were later obtained using a smartphone attached to an adaptable camera device. Retinal images permitted the visualization of the macular and papillary regions and were sent without compression via the internet to a retinal specialist for interpretation. Sensitivity and specificity were calculated for all cases and stages of DR. RESULTS: Using our standard examination method, the prevalence of DR and macular edema were 13.6% and 6.4%, respectively. With the smartphone-based retinal camera, the prevalence of DR and macular edema were 18.2% and 8.2%, respectively. Sensitivity and specificity for the detection of all stages of DR was 73.3% and 90.5%, respectively. For the detection of macular edema, sensitivity was 77.8%, and specificity was 95%. For severe nonproliferative DR (NPDR), sensitivity and specificity were 80% and 99%, respectively; for proliferative DR (PDR), they were both 100%. In the early stages of DR, specificity was 89.8% for mild NPDR and 97.1% for moderate NPDR. Sensitivity was 57.1% and 42.9%, respectively. CONCLUSION: Screening for DR using a smartphone-based retinal camera has a satisfactory specificity at all DR stages. Its sensitivity seems to be high only in the stages of DR necessitating a specific therapeutic decision (eg, macular edema, severe NPDR, and PDR). A smartphone-based retinal camera may be a useful device to screen for DR in resource-limited settings. [ Ophthalmic Surg Lasers Imaging Retina . 2019;50:S18–S22.] |
| Databáze: | OpenAIRE |
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