• 1
    Holluway R., Fuchs, H. and Robinett, W. Virtual Worlds reseach al the University of North Carolina. Proc. of Computer Graphics International. Japan (1992).
  • 2
    Holmes, R. Health and safely issues concerning ‘Virtuality’ systems. Proc. of Computer Graphics, London, UK. 352372 (1990).
  • 3
    Robinett, W. and Rolland, J. P. A computational model for the stereoscopic optics of head-mounted display. Presence 1, 4561 (1992).
  • 4
    Sheehy, J. B. and Wilkinson, M. Depth perception after prolonged usage of night vision goggles. Aviation, Space and Environmental Medicine June, 573579 (1989).
  • 5
    Mallett, R. F. J. Fixation disparity its genesis in relation to asthenopia. Ophthalmic Optician 14, 11591168 (1974).
  • 6
    Yelka, A. A., Pickwell, L. D. and Jenkins, T. C. A. Binocular vision, age and symptoms. Ophthal. Physiol. Opt. 9, 115120 (1989).
  • 7
    Pickwell, D., Jenkins, T. and Yetka, A. A. The effect of fixation disparity and associated heterophoria of reading at an abnormally close distance. Ophthal. Physiol. Opt. 7, 345347 (1987).
  • 8
    Yetka, A. A., Jenkins, T. and Pickwell, D. The clinical assessment of binocular vision before and after a working day. Ophthal. Physiol. Opt. 7, 349352 (1987).
  • 9
    Ehrlich, D. L. Near vision stress: vergence adaptation and accommodative fatigue. Ophthal. Physiol. Opt. 7, 353357 (1987).
  • 10
    Pickwell, L. D., Kaye, N. A. and Jenkins, T. C. A. Distance and near readings of associated heterophoria taken on 5(K) patients. Ophthal. Physiol. Opt. 12, 291296 (1991).
  • 11
    Jenkins, T. C. A., Pickwell, L. D. and Abd-Manan, F. Effect of induced fixation disparity on binocular visual acuity. Ophthal. Physiol. Opt. 12, 299301 (1992).
  • 12
    Henson, D. B. and North, R. Adaptation to prism-induced heterophoria. Am. J. Optom. Physiol. Optics. 57(3), 129137 (1980).
  • 13
    Henson, D. B. and Dharamshi, B. G. Oculomotor adaptation to induced heterophoria and anisometropia. Invest. Ophthalmol. Visual Sci. 22, 234240 (1982).