adaptometer


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adaptometer

 [ad″ap-tom´ĕ-ter]
an instrument for measuring the time required for retinal adaptation, i.e., for regeneration of the visual purple; used in detecting night blindness, vitamin A deficiency, and retinitis pigmentosa.

ad·ap·tom·e·ter

(ad'ap-tom'ĕ-tĕr),
A device for determining the course of retinal dark adaptation and for measuring the minimum light threshold.

ad·ap·tom·e·ter

(ad'ap-tom'ĕ-tĕr)
A device for determining the course of retinal dark adaptation and for measuring the minimum light threshold.

adaptometer 

An instrument for measuring the variations in threshold of luminance. The most common is that of Goldmann-Weekers.
References in periodicals archive ?
A computerized dark adaptometer (AdapDx, MacuLogix, Inc., Middletown, PA, USA) was used in three patients to verify that full dark adaptation had been obtained at the end of the examination [22].
For many years the 'gold-standard' instrument for measuring dark adaptation and absolute scotopic sensitivity was the Goldmann-Weekers adaptometer (Haag-Streit, Switzerland).
This has led to the recent development of a commercially available, clinically friendly, short-duration dark adaptometer instrument (the AdaptDx, MacuLogix, USA).