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MSP FINAL EXAM STUDY GUIDE
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MSP FINAL EXAM STUDY GUIDE
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MSP FINAL EXAM STUDY GUIDEForm deprivation myopia - Answers- occurs when the eyesight is deprived by limited
illumination and vision range, or the eye is
modified with lenses or deprived of clear form vision
Depriving the eye from vision - Answers- axial elongation --> myopia
Depriving the eye from vision - Answers- Chronic image degradation can cause myopia
Myopia can be sectorial—deprive any light stimulus on one part of the retina
clear retinal image - Answers- essential for normal refractive development
ocular changes in form deprivation myopia - Answers- similar to those associated w/
juvenile-onset myopia
Hyperopic defocus vs unrestricted vision - Answers- Monkeys wore -3D lenses
binocularly—some worn continuously; others had lenses removed for
four 15-minute periods each day (1 hour total)
Hyperopic defocus vs unrestricted vision - Answers- group of animals who wore the -3D
lenses continuously exhibited axial myopia
eliminated myopic changes - Answers- brief, daily periods of viewing through pl lenses
Brief periods of unrestricted vision - Answers- can prevent the axial myopia
Conclusion: - Answers- integrating properties of the
emmetropization process normally reduce the likelihood that transient periods of
hyperopic defocus will cause myopia
not weighted equally - Answers- Visual signals that increase axial growth and those
that reduce axial growth
Not true - Answers- -acuity is highest at the fovea and decreases rapidly with
eccentricity
-assumed that central vision dominates refractive development
in the periphery - Answers- Myopes typically exhibit relative
hyperopia
in the periphery - Answers- hyperopes show relative myopia
ocular growth - Answers- signals from the periphery
Foveal ablations - Answers- no apparent effect on emmetropization
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