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Dictionary accomodating

See aniso-accommodation; ciliary muscle; accommodative reflex; Fincham's theory; Helmholtz's of accommodation theory.amplitude of accommodation The maximum amount of accommodation A that the eye can exert.

It is expressed in dioptres, as the difference between the far point and the near point measured with respect either to the spectacle plane or the corneal apex or some other reference point.

Accommodation induced directly by a change in convergence. That component of accommodation induced by the binocular disparity of the retinal images. vergence accommodation.correction induced accommodation Ocular accommodation induced when changing from spectacles to contact lenses in near vision.

Spectacles induce less accommodation in myopes and more accommodation in hyperopes than that exerted by an emmetrope fixating at a given distance.

Fringe ophthalmology Near and far focusing—an exercise in Bates vision training, which consists of changing the point of focus from near to far distances multiple times.

Ophthalmology The automatic adjustment of the lens curvature, resulting in a change in the focal length of the eye, which brings images of objects from various distances into focus on the retina; the ability of the eye to focus at various distances, by changing lens shape.

Changes during accommodation: (A), contraction of ciliary muscles; (B), approximation of ciliary muscles to lens; (C), relaxation of suspensory ligament; (D), increased curvature of anterior surface of lens.4 (in sociology) the reciprocal reconciliation of conflicts between individuals or groups concerning habits and customs, usually through a process of compromise, arbitration, or negotiation. Occupational medicine The changes made by a person or organisation to a workplace to allow a person with disabilities to work there.See convergence accommodation; proximal accommodation; accommodative response; ciliary muscle; near reflex.meridional accommodation See astigmatic accommodation.microfluctuations of accommodation Involuntary variations in the contraction of the intraocular muscles responsible for accommodation and resulting in changes of about 0.1-0.5 D with a frequency of 0.5-2.5 point of accommodation The nearest point in space that is conjugate with the foveola when exerting the maximum accommodative effort. A relaxation of accommodation below the apparent zero level or when shifting from near to distance vision. See relative amplitude of accommodation.objective accommodation Accommodation measured without the subject's judgment.This is accomplished by dynamic retinoscopy, by autorefractors or by visually evoked cortical potentials.The amplitude of accommodation declines from about 14 D at age 10 to about 0.5 D at age 60 (although the measured value is usually higher due to the depth of focus of the eye).See minus lens method; push-up method.astigmatic accommodation Postulated unequal accommodation along different meridians of the eye attributed to a differential action of the ciliary muscle which would lead to a difference in the curvature of the surfaces of the crystalline lens along different meridians. meridional accommodation.closed-loop accommodation Accommodation response to visual stimuli in normal viewing conditions.See open-loop accommodation.components of accommodation The process of accommodation is assumed to involve four components: reflex, vergence (convergence), proximal and tonic accommodation (also called resting state of accommodation).See convergence accommodation; proximal accommodation; reflex accommodation; resting state of accommodation.consensual accommodation Accommodation occurring in one eye when the other eye has received the dioptric stimulus.convergence accommodation 1.Contact lenses do not induce any different accommodation than that required for a given distance.Consequently, myopes require more accommodation and hyperopes less accommodation when they transfer from spectacles to contact lenses.See myopic defocus.mechanism of accommodation Process by which the eye focuses onto an object.It does so by contracting the ciliary muscle which releases the tension on the zonular fibres, allowing the elastic lens capsule to increase its curvature, especially that of the front surface.

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