Office hazards: eve strain phenomenon

Eye strain, often referred to as asthenopia, is a frequent ailment of the eyes that causes generalised symptoms such headaches, blurred vision, weariness, and even double vision. Extended visual activity, such as reading, using computers or other digital devices for extended periods of time, can cause symptoms that can be broadly categorised into internal and external symptom causes. The widespread belief that reading in low light causes irreversible eye damage originated from the feeling of eye strain during such activities.