**4. Discussion**

One of the parameters of cyber sickness is visual symptoms (Barret, 2004). In his handbook, Anshel, J. (2005) mentioned that visual symptoms can vary but these mostly include eyestrain, headache, blurred vision, dry and irritated eyes, double vision, colour distortion and light sensitivity. The symptom most often occurs when the viewing demand of the task exceeds the visual abilities of the user. The viewing task is influenced by the design of the virtual environment viewed or interacted. This research has identified some attributes or variables of the VE that may cause the occurrence of visual symptoms.
