Asthenopia is commonly referred to as the tiredness or discomfort in the eyes. It usually occurs when the eyes are over-worked due to the prolonged use of the eyes, especially during activities that demand sharp visual focus, such as reading, using digital screens, or working under dim lighting.

This fact sheet is part of our Ophthalmology and Optometry Information Guide series, developed to help people understand eye conditions and their impact on navigating the built environment.