The eyes of young chickens grow toward emmetropia.
نویسندگان
چکیده
The distribution of refractive errors was followed in chicks from hatching to 8 weeks of age. A dramatic progressive decrease in the variability of refractions was observed over this period. In addition, there appeared to be a parallel decline in hyperopia, even when the artifactual hyperopia of retinoscopy was taken into account. These results are evidence for a postnatal development regulatory mechanisms, most likely dependent on vision, which directs growth of the eye toward emmetropia.
منابع مشابه
The regulation of eye growth and refractive state: an experimental study of emmetropization.
During growth the vertebrate eye achieves a close match between the power of its optics and its axial length with the result that images are focused on the retina without accommodative effort (emmetropia). The possibility that vision is required for the regulation of eye growth was studied experimentally in chicks made myopic or hyperopic by different visual manipulations. After discontinuing t...
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عنوان ژورنال:
- Investigative ophthalmology & visual science
دوره 20 4 شماره
صفحات -
تاریخ انتشار 1981