range of accommodation

range of accommodation

n.

The distance between one object that is viewed with minimal refractivity of the eye and another object that is viewed with maximal accommodation.

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range of accommodation

Etymology: OFr, ranger + L, accommodatio

the distance between the farthest point at which an object can be seen clearly with accommodation fully relaxed and the nearest distance at which an object can be observed with full accommodation, measured in meters or centimeters.

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range [rānj]

1. the difference between the upper and lower limits of a variable or of a series of values.

2. an interval in which values sampled from a population, or the values in the population itself, are known to lie.

range of accommodation the total amount of accommodative power of the eye; the difference in refractive power of the eye when adjusted for near and for far vision. The amplitude diminishes as age increases because elasticity of the lens is decreased.

range of audibility the range between the extreme frequencies of sound waves beyond which the human ear perceives no sound: lower limit, 16 to 20 cycles per second; upper limit, 18,000 to 20,000 cycles per second.

range of motion the range, measured in degrees of a circle, through which a joint can be extended and flexed; see also range of motion exercises.