<unk>  <unk>  is a condition resulting from focusing the eyes on a<unk>  or other display device for protracted, uninterrupted periods of time and the eye's muscles being unable to recover from the constant tension required to maintain focus on a close object. Some symptoms of<unk>  include headaches, blurred<unk> , neck pain, fatigue, eye strain, dry eyes, irritated eyes, double<unk> , vertigo/dizziness, polyopia, and difficulty refocusing the eyes. These symptoms can be further aggravated by improper lighting conditions (i.e. glare, strong blue-spectrum backlights, or bright overhead lighting) or air moving past the eyes (e.g. overhead vents, direct air from a fan).
Computer vision syndrome
Phantom eye syndrome
Cat eye syndrome
Vibroacoustic disease
Central facial palsy
Ocular myasthenia
Oculomotor nerve palsy
Ocular neurosis