Critical evaluation of the NR-1000F Auto Refractometer.

Critical evaluation of the NR-1000F Auto Refractometer. Research Abstract Details 

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Critical evaluation of the NR-1000F Auto Refractometer. Abstract Text:

The manifest (dry) refractions of 165 eyes of 86 patients, aged 6 to 75 years, were studied on the Nikon Auto Refractometer NR-1000F. The results obtained were compared with the clinical refractive data, and they were analysed for degree of agreement of various refractive components in different types and grades of refractive errors in the separate age groups. On the NR-1000F the spherical and cylindrical components and spherical equivalents skewed towards more minus (or less plus), especially so in emmetropes, low hypermetropes, and low myopes. This error declined with increasing age over 40 years and was also significantly lower in aphakia and mixed astigmatism. Determination of cylinder axis was found to be reliable on the NR-1000F. In spite of the obvious utility of the device its inbuilt automatic fogging system does not seem adequately to neutralise the patient's accommodative efforts, as the fixation target probably induces instrument myopia.

Critical evaluation of the NR-1000F Auto Refractometer. Publishing Authors By Initials

For similar eye diseases: refractive errors research abstracts see: eye diseases: refractive errors research

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Critical evaluation of the NR-1000F Auto Refractometer. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: The British journal of ophthalmology

VOLUME: 70

Page Numbers: 221-6

Journal Abbreviation: Br J Ophthalmol

ISSN: 0007-1161

DAY: 28

MONTH: Mar

YEAR: 1986

Critical evaluation of the NR-1000F Auto Refractometer. Information

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LANGUAGE: eng

NlmUniqueID: 421041

Critical evaluation of the NR-1000F Auto Refractometer. Keywords Mesh Terms:

KEYWORDS: Refractive Errors

MESH TERMS: physiopathology

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Country: ENGLAND

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MEDLINETA: Br J Ophthalmol

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