Ultra-wide-field fundus photography: can it replace Early Treatment Diabetic Retinopathy Study 7 field photography?

Diabetes mellitus is a major cause of visual deficiency among working age adults and is estimated for visual impairment in 4.8% of the 37 million individuals who are visually impaired all over the world (1,2). A wide range of diabetic retinopathy microvascular changes are seen in the retina. Throughout the years, a screening device utilizing both advanced non-mydriatic fundus imaging and traditional mydriatic fundus camera has been utilized and has been found to be useful (1).