CVS is a complex of eye and vision problems related to the activities that stress the near vision during the prolonged use of the VDT. The main ocular symptoms reported among computer workers are eye strain, irritation, burning sensation, redness, blurred vision and double vision. Ocular surface abnormalities following an extended period of computer usage causes symptoms such as dryness of the eyes, redness, gritty and burning sensation in addition to stress, anxiety, tense neck and shoulders.