Computers are being used for many different reasons all across the world. Computers are used in the work place for documentation and to keep records of clients. The question that will be answered is how does the computer monitor affect an individual during use? The anatomy of the human eye will be addressed to give the reader a better understanding of how light travels through the eye. Computer Vision Syndrome, also known as (CVS), is an effect of gazing into a monitor for long periods of time, and will be discussed to give the reader a clear illustration of the negative effects of the computer monitor. Computer monitors are used in everywhere in many types of lighting, and workplace lighting is an example that will be discussed. The factors that contribute to CVS will be discussed, the symptoms, and finally ways to prevent CVS will be addressed so that the reader will be aware of what can happen if they are sitting in front of a computer for a long duration.