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Uniocular occlusion (dark patching) of adults for a period of days produces marked reduction in the directional sensitivity of the eye (Stiles-Crawford effect). The effect reaches a maximum 3 to 5 days after the onset of patching. Recovery occurs in a comparable period. The second eye is not affected, and a simple light diffuser fails to produce the same effect. Coupled with alteration in directional sensitivity are an overall increase in sensitivity and modest resolution and perceived colour changes. These findings, with other research, suggest that directional sensitivity is at least partially mediated by light and that orientation of photoreceptors is an active process.
J M Enoch, and
D G Birch, and
E E Birch, and
M D Benedetto
January 1995,
Annales Academiae Medicae Stetinensis,
J M Enoch, and
D G Birch, and
E E Birch, and
M D Benedetto
June 1983,
Investigative ophthalmology & visual science,
J M Enoch, and
D G Birch, and
E E Birch, and
M D Benedetto
January 1979,
Transactions of the ophthalmological societies of the United Kingdom,
J M Enoch, and
D G Birch, and
E E Birch, and
M D Benedetto
April 1979,
Ophthalmology,
J M Enoch, and
D G Birch, and
E E Birch, and
M D Benedetto
December 2002,
The British journal of ophthalmology,
J M Enoch, and
D G Birch, and
E E Birch, and
M D Benedetto
May 1992,
Acta virologica,
J M Enoch, and
D G Birch, and
E E Birch, and
M D Benedetto
January 1980,
Problemi na khigienata,
J M Enoch, and
D G Birch, and
E E Birch, and
M D Benedetto
September 1982,
The British journal of ophthalmology,
J M Enoch, and
D G Birch, and
E E Birch, and
M D Benedetto
January 1959,
La Medecine aeronautique,
J M Enoch, and
D G Birch, and
E E Birch, and
M D Benedetto
December 1965,
Nihon Naika Gakkai zasshi. The Journal of the Japanese Society of Internal Medicine,
