On the Stiles-Crawford effect with age.
نویسندگان
چکیده
PURPOSE To determine whether the Stiles-Crawford effect remains stable after subjects have aged 30 years. METHODS The relative luminous efficiency as a function of pupil position (Stiles-Crawford effect) was determined for the same seven subjects on the same apparatus in the 1960s and in 1995. The pupil opening was traversed nine times, at 20 degrees azimuth intervals. Data were fit with a revolution paraboloid yielding a peak position (x0, y0) and a peakedness (rho). RESULTS Two of seven subjects showed a significant, but small, decrease in rho, and the other five showed, no change. No clear outcome in x0, y0 changes could be reported because of differences in pupil dilation then and now. CONCLUSIONS Although exceptions are found on the stability of the Stiles-Crawford effect with age, the authors can still conclude that it is stable.
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عنوان ژورنال:
- Investigative ophthalmology & visual science
دوره 38 6 شماره
صفحات -
تاریخ انتشار 1997