Tired eye is another term for what is commonly known as eyestrain – when eyes feel achy, weak, or heavy due to intense use. It is not a disease, and does not require medical treatment – but it never hurts to know how to prevent it. Tired eyes can come from any number of activities. Some of the most common include too little sleep, allergies, working on the computer for too long, poor lighting conditions, driving a car for prolonged periods of time, reading for long periods, or any other activity that may require the eyes to maintain intense focus for long periods of time. Below you will find a wide range of products suitable for dealing with tired eyes.