Meaning of accommodating

So, if the near point of an emmetrope is at 25 cm from the spectacle plane, the amplitude of accommodation is equal to − [−1/(25 ✕ 10)] = 4 D.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).

meaning of accommodating-29

Absence of an accommodative lag may indicate latent hyperopia. It can also occur as a result of a spasm of accommodation.

See myopic defocus.mechanism of accommodation Process by which the eye focuses onto an object.

See correction induced point of accommodation A point in space conjugate with the retina (more specifically the foveola) when the accommodation is relaxed. The amount by which the accommodative response of the eye is less than the dioptric stimulus to accommodation, as usually occurs when fixating an object at near. The condition occurring in dynamic retinoscopy in which the neutral point is situated further from the eyes than is the retinoscopic target.

In emmetropia, the far point is at infinity; in myopia, it is at a finite distance in front of the eye; in hyperopia, it is a virtual point behind the eye (Fig. It could be due to uncorrected hyperopia or indicate accommodative insufficiency. See hyperopic of accommodation The amount by which the accommodative response of the eye is greater than the dioptric stimulus to accommodation, as occurs when fixating at distance, in a few individuals.

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.

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.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. 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.The ciliary muscle is controlled by the parasympathetic system, which is triggered by an out of focus retinal image. See push-up method; near point rule; near point sphere; Scheiner's test.negative accommodation 1.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.Consequently, myopes require more accommodation and hyperopes less accommodation when they transfer from spectacles to contact lenses.

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