Refractive and motor mechanisms of the eye.
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Refractive and motor mechanisms of the eye.

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Published by Keystone in Philadelphia .
Written in English


Book details:

The Physical Object
Pagination1 vol
ID Numbers
Open LibraryOL13725611M

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The refractive power of the eye has an average of 58 diopters with a variance of 10 diopters. The iris, which is located in front of the lens, acts as aperture stop of the eye with the pupil as central opening. The iris is connected to two antagonistic muscles, one of which Somatosensory & Motor Research publishes original, high-quality papers that encompass the entire range of investigations related to the neural bases for somatic sensation, somatic motor function, somatic motor integration, and modeling :// Another thing most irises share is the presence of muscle. The majority of species have a narrow circular sphincter pupillae running circumferentially around the pupillary margin (Fig. 1, Fig. 2A and C), whose contraction decreases pupil species also have a radial dilator muscle between the sphincter muscle and the iris root that increases pupillary area on contraction (Fig. 1A Light rays enter the eye through the cornea, the clear front “window” of the eye. The cornea’s refractive power bends the light rays in such a way that they pass freely through the pupil the opening in the center of the iris through which light enters the eye. The iris works like a shutter in a ://

Emmetropisation and the aetiology of refractive errors Article Literature Review in Eye (London, England) 28(2) January with Reads How we measure 'reads' A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the :// The African Vision and Eye Health journal publishes original peer-reviewed papers of scientific and clinical research in optometry, ophthalmology, vision science and other related fields. Aim: The aim of this study was to explore possible associations between stereoacuity and refractive, accommodative and vergence :// Identical twin studies showing up to 90% correlation of refraction between monozygotic twins leave little doubt that the principal components of refraction are inherited. Recent molecular genetic and gene-mapping studies have further substantiated the genetic etiology of various forms of refractive errors. The fact that correlation is not % between identical twins, and that the correlation

  Human eye, specialized sense organ in humans that is capable of receiving visual images, which are relayed to the brain. The anatomy of the eye includes auxillary structures, such as the bony eye socket and extraocular muscles, as well as the structures of the eye itself, such as the lens and the :// The distance type has been subdivided into ‘simulated’ (pseudo) or ‘true’ types based on the presence or absence of fusion (motor control of eye position) or focusing mechanisms at near: in the ‘simulated’ distance X(T) the near angle of deviation increases, either when fusion is disrupted (by occlusion of one eye) or focusing is A third of the brain is devoted to the visual system, so neurology is an important topic! While the rest of ophthalmology involves image recognition (your ability to recognize corneal abrasions, disk cupping, and infections under the microscope), neuroophthalmology requires a more “cerebral” analysis. This makes learning the subject painful at first – trust me, [ ] The refractive state of the eye is determined by refractive components (corneal power, lens power, anterior chamber depth, and axial length) which are interdependent rather than independent variables, and that the eye grows during the early years in life in such a manner that the refractive state tends towards