How blue light from computers, smartphones destroys your eyes

Diana Lang'at, an optometrist at Lapaire Kenya, taking a patient through an eye test. [File, Standard]

Patience Ahumuza, a digital communications consultant cannot live without her eyeglasses which she has been wearing since 2010, because of the effect of the blue light from screens.

Even while in school, Patience, who is short-sighted, recalls “I could barely see what the teacher was writing and an optician recommended eyeglasses.”