Circadian Rhythm and Cataract Surgery

The circadian rhythm is a complex biologic phenomenon in which environmental light is a major exogenous regulator. Cataract patients' optical system precludes optimal transmission of light, especially the shorter wavelengths that affect the circadian system more. The aim of this article is to provide a general overview of the effect of cataract surgery with different types of intraocular lens in the circadian rhythm. It is consensual in most studies that cataract surgery has a positive impact in circadian rhythm as evaluated by subjective and objective parameters.