What was known before
diabetic retinopathy, DMO, impaired vision, blindness
DIABETIC RETINOPATHY, DIABETIC MACULAR OEDEMA, BLINDNESS

Diabetic macular oedema (DMO), a common cause of impaired vision and blindness amongst diabetics, can develop at any stage of diabetic retinopathy and is known to wax and wane over time.In clinical trials, central VA is a surrogate outcome for every day vision-related functions such as reading, driving, watching television, and recognising faces; however, the extent of VA fluctuations that may impact these vision-related functions is not routinely measured in clinical trials.