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K. Chalam, F. Syed, J. Siffirt, S. Syed, S. Grover; Evaluation of Modified Portable Digital Camera as Screening Tool in Retinal Disorders. Invest. Ophthalmol. Vis. Sci. 2007;48(13):2577.
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to evaluate a cost-effective, portable, wide-field, non-contact, digital fundus camera system and compare to a traditional fundus camera for posterior segment photography and screening of retinal disorders
191 eyes of 102 patients with and without retinal findings were photographed using a mydriatic modified portable digital camera followed by a traditional fundus camera. Patients were dilated at the time of photography. Images from both cameras were reviewed independently by two physicians to identify the presence or absence of retinal findings
Fundus findings observed on the digital camera included but were not limited to proliferative diabetic retinopathy, hypertensive retinopathy, retinal pigment epithelium change, drusen, vessel tortuosity, subretinal hemorrhage, retinal degeneration, and panretinal photocoagulation scars. The sensitivity and the specificity of the modified digital camera were 81% and 100%, respectively. The kappa value computed for the correlation between the digital camera pictures and the traditional fundus camera images was 0.60, indicating moderate agreement among the raters. However, the AC1 statistic, calculated to correct for the bias of Cohen’s kappa, was 0.92 illustrating substantial agreement between the raters
Our results suggest that the low cost mydriatic modified portable digital camera is a sensitive, specific, and cost-efficient means for detecting abnormal retinal findings in the diagnosis of various retinal disorders
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