NDLI: Aberrations of chick eyes during normal growth and lens induction of myopia

Content Provider	Springer Nature Link
Author	Kisilak, Marsha L. Campbell, Melanie C. W. Hunter, Jennifer J. Irving, Elizabeth L. Huang, Lan
Copyright Year	2006
Abstract	Understanding the control of eye growth may lead to the prevention of nearsightedness (myopia). Chicks develop refractive errors in response to defocusing lenses by changing the rate of eye elongation. Changes in optical image quality and the optical signal in lens compensation are not understood. Monochromatic ocular aberrations were measured in 16 chicks that unilaterally developed myopia in response to unilateral goggles with −15D lenses and in 6 chicks developing naturally. There is no significant difference in higher-order root mean square aberrations (RMSA) between control eyes of the goggled birds and eyes of naturally developing chicks. Higher-order RMSA for a constant pupil size exponentially decreases in the chick eye with age more slowly than defocus. In the presence of a defocusing lens, the exponential decrease begins after day 2. In goggled eyes, asymmetric aberrations initially increase significantly, followed by an exponential decrease. Higher-order RMSA is significantly higher in goggled eyes than in controls. Equivalent blur, a new measure of image quality that accounts for increasing pupil size with age, exponentially decreases with age. In goggled eyes, this decrease also occurs after day 2. The fine optical structure, reflected in higher-order aberrations, may be important in understanding normal development and the development of myopia.
Starting Page	845
Ending Page	855
Page Count	11
File Format	PDF
ISSN	03407594
Journal	Journal of Comparative Physiology A
Volume Number	192
Issue Number	8
e-ISSN	14321351
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-03-31
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ocular aberrations Animal models Myopia Emmetropization Optical quality Animal Physiology Zoology Neurosciences
Content Type	Text
Resource Type	Article
Subject	Physiology Behavioral Neuroscience Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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