Variation in near visual acuity with illuminance for a group of 27 partially-sighted people

Abstract

This paper reports on the improvements in near visual acuity with increasing task illuminance for a group of partially-sighted people with various visual defects. The experimental method employed a technique which allows the easy transfer of experimental results to practical design. Comments are also made on the design of the visual environment for the partially sighted.

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References

Julian, W.G. , The design of the visual environment for the aged partially sighted, PhD Thesis , (University of Sydney, 1983).

Thomas, J.P. , Spatial resolution and spatial interaction, Handbook of Perception, Vol. 5-Seeing , (Academic Press, NY, 1975).

Weston, H.C. , Trans. IES (London), 26, 1 (1961).

Cuttle, C. , The New Photometry, Developments in Lighting-I, (Applied Science Publishers, London, 1978 ).

Weale, R.A. , The aging eye (H. K. Lewis, London , 1963).

Blackwell, O.M. and Blackwell, H.R. , J. IES, (NY), 9(3), 158 (1980).

Cibs Code for interior lighting (Chartered Institution of Building Services, London, 1983).

Kaufman, J. E. (ed.), IES Lighting Handbook (IES of North America, NY 1981).

Ferguson, D.A. , et al, Applied Ergonometrics, 5(2), 84 (1973).

10.

Boyce, P.R. , Ltg. Res, & Technol., 5(3), 125 (1973).

11.

padmos, R. and Vos, J.J. , Proceedings of 19th Session, 1979, CIE Publication No. 50, p. 36 (1980).

12.

Fonda, G. , Management of low vision (Thieme-Stratton, Inc., NY, 1981).

13.

Sorsby, A. , The incidence and causes of blindness in England and Wales, 1948-1962 (HMSO, 1966).

14.

Dowling, M. , The incidence and prevalence of blindness in NSW (Royal Blind Society of NSW, Sydney, 1980 ).

15.

Kahn, H.A. and Moorehead, H.B. , US Dept. of Health, Educ. and Welfare. Publication No. (NIH) 73, p. 427 (1973).

16.

Lang, M.M. , Aust. J. Optom., 65(5), 178 (1982).

17.

Gazely, D.J. , Light and Low Vision Report No. 1 (University of Technology , Loughborough, 1978).

18.

Mehr, E.B. and Fried, A.N. , Low vision care (The Professional Press, Chicago, 1975).

19.

Stone, P.T. , Private communication, 1983.

20.

Gazely, D.J. and Stone, P.T. , Light and Low Vision Report No. 3 (University of Technology , Loughborough, 1978).

21.

Boyce, P.R. , Human factors in lighting, (Applied Science Publishers , London, 1981).

22.

Bailey, I.L. and Lovie, J.E. , Am. J. Optom & Physical Optics, 53, 40 (1976).

23.

Simpson, J. and Tarrant, A. , Ltg. Res. & Technol. , 15(1), 1 (1983).

24.

Merz, B. , Lighting in Australia, 2(3), 26 (1982).

25.

Levitt, J. , Lighting for the elderly-an optician's view, Light for Low Vision, p. 55 (CIBS, London, 1980).

26.

Silver, J.E. , et al, Trans. Ophthal. Soc. (UK), 98, 262 (1978).

27.

Walsh, J.W.T. , Photometry, p. 59, (Dover Publications, New York, 1965).