Inappropriate sleep duration has already been defined as a modifiable risk factor for several health outcomes at the population level, including diabetes, metabolic syndrome and all-cause mortality, but the associations between length of sleep and major eye disorders remain controversial. A recent literature review published in Eye compiled available evidence and revealed that long sleep duration coincided with increased risk of diabetic retinopathy (DR), while short sleep duration was correlated with significantly elevated odds for cataract. Notably, long sleep duration per day, including nighttime sleep and daytime napping, rather than per night was significantly associated with an increased risk of DR. Read More