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Modification of pattern reversal VERs by ocular accommodation
Vision Research, 1985The amplitudes and implicit times of the P-1 component of monocular transient pattern VERs elicited by reversing checkerboard targets were measured in 6 conditions: (1) Ocular accommodation (Ao) elicited by minus power ophthalmic lenses; (2) Ao stimulated by minus lenses with the natural pupil of the test eye dilated and replaced by an artificial pupil;
J V, Lovasik, M, Spafford, M, Szymkiw
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Accommodative and Vergence Findings in Ocular Myasthenia
Journal of Neuro-ophthalmology, 2000Myasthenia gravis (MG) is a neuromuscular disorder that affects skeletal muscles, in particular, the extraocular muscles. Response variability is a hallmark sign. Detailed findings are described in a patient with MG in which the presenting sign was accommodative insufficiency.
J, Cooper +4 more
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Comparison of changes in ocular aberrations with accommodation and accommodative facility
Acta OphthalmologicaAims/Purpose: This study aimed to analyse whether a relationship exists between subjectively measured monocular Accommodative Facility (AF), the magnitude of the revolution‐symmetric Zernike coefficients C20, C40 and C60, and the objectively measured Accommodative Response (AR).Methods: A total of 66 eyes, from 33 healthy young volunteers (26 women and
Maria Mechó García +3 more
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Volume change of the ocular lens during accommodation
American Journal of Physiology-Cell Physiology, 2007During accommodation, mammalian lenses change shape from a rounder configuration (near focusing) to a flatter one (distance focusing). Thus the lens must have the capacity to change its volume, capsular surface area, or both. Because lens topology is similar to a torus, we developed an approach that allows volume determination from the lens cross ...
R, Gerometta +3 more
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Autonomic correlates of ocular accommodation and cardiovascular function
Ophthalmic and Physiological Optics, 2009Abstract Purpose: To evaluate the hypothesis that objective measures of open‐ and closed‐loop ocular accommodation are related to systemic cardiovascular function, and ipso facto autonomic nervous system activity.
Leon N, Davies +2 more
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A Biometric Study of Ocular Changes During Accommodation
American Journal of Ophthalmology, 1993We performed a biometric study that used A-mode ultrasonography on 106 subjects during ocular accommodation. The subjects were divided into two groups; group 1 included 76 subjects and group 2 included 30 subjects. In group 1, we measured the anterior chamber depth, lens thickness, and axial length in the right eye while the left eye, wearing ...
P J, Shum, L S, Ko, C L, Ng, S L, Lin
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Accommodative Esotropia After Ocular and Head Injury
American Journal of Ophthalmology, 1990Five children lost their ability for motor fusion after traumatic injury to either the eye or head. All patients had the onset of accommodative esotropia within two months of the traumatic episode. The ocular alignment of each child was controlled by the use of spectacles that corrected the accommodative requirements.
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Effect of Migraine Attack on Pupil Size, Accommodation and Ocular Aberrations
European Journal of Ophthalmology, 2021Buse Rahime Hasirci Bayir +2 more
exaly
The structural basis of ocular accommodation in the chick.
Revue canadienne de biologie experimentale, 1984The structures involved in ocular accommodation were studied with scanning electron microscopy in 5-day old chicken. Particular attention was paid to the ciliary muscle that was found to be subdivided into an anterior and a posterior portion. Since the anterior portion inserted on the wall of canal of Schlemm, we postulate that it could somehow control
A M, Suburo, M, Marcantoni
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