The following is a guest post by Rob Levin. Rob is a Senior UI/UX Developer at Mavenlink, and coauthor of the Unicorn UI CSS Button Library. Their 2.0 release is using an SVG icon system, and here he shares some issues he's ran into along the way, and how you can watch out for them and fix them.
Many causes of eye pain also cause the eye to look red (see Eye Redness). Other symptoms may be present depending on the cause of eye pain. For example, people may have blurred vision (see Vision, Blurred), a bulging eye (see Eyes, Bulging), or pain worsened by bright light. The cornea (the clear layer in front of the iris and pupil) is highly sensitive to pain.
Any activity that requires intense use of the eyes for a prolonged time or under difficult conditions can cause eye strain. These include extended periods of: Reading; Writing; Computer work; Driving; Exposure to bright light or straining to see in dim light can also cause eye strain. One of the most common causes of eye strain is staring for long periods at digital devices such as: Computer screens; Smartphones; Video games; Computer vision syndrome, or CVS, is a type of eye strain from long periods of time using computer or laptop screens.