Comparison of Angiography Performance of Low-cost portable Fundus camera with standard FFA camera – Validation Study
Study Design: In an observational cross-sectional study, 91 eyes of 46 consecutive patients underwent simultaneous Fundus Fluorescein Angiography (FFA) for common retinal disorders. The FFA images captured by both cameras were graded by 3 Retinologists (DVS, GM, RB) in a structured format. 7 charact...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wolters Kluwer Medknow Publications
2020-10-01
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| Series: | Delhi Journal of Ophthalmology |
| Subjects: | |
| Online Access: | https://journals.lww.com/10.7869/djo.594 |
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| Summary: | Study Design:
In an observational cross-sectional study, 91 eyes of 46 consecutive patients underwent simultaneous Fundus Fluorescein Angiography (FFA) for common retinal disorders. The FFA images captured by both cameras were graded by 3 Retinologists (DVS, GM, RB) in a structured format. 7 characteristics of FFA images that were used for grading were Foveal Avascular Zone (FAZ) visualization, identifying branch retinal vein, Identification of any abnormal hyper fluorescence at macula, Identification of Micro aneurysms, Identification of capillary non perfusion areas and identification of leakage from retinal neovascularization, Image quality and Impact on Clinical decision. Results were captured and statistically analyzed for interobserver and intercamera agreements.
Results:
Out of total 7 features in FFA images graded by 3 Retinologists, 4 characteristics were found to have statistically significant intercamera agreement for 3 retinologists. These were Identification of any abnormal hyper fluorescence at macula, Identification of Micro aneurysms, Identification of capillary non perfusion areas and identification of leakage from retinal neovascularization. These 4 characteristics also had very good agreement between 3 retinologists.
Conclusion:
Based on this pilot study, we can conclude that the Fluorescein Angiography performance of this low-cost portable Fundus camera for detecting clinically relevant findings was comparable to a standard Fundus camera. We conclude that in resource limited settings, this low-cost portable Fundus camera can be a useful alternative to standard Fundus camera for treating common retinal disorders.. |
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| ISSN: | 0972-0200 2454-2784 |