Inferring myopia over the lifecourse from uncorrected distance visual acuity in childhood

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Inferring myopia over the lifecourse from uncorrected distance visual acuity in childhood.

AIM To report the usefulness of uncorrected distance visual acuity (DVA) at 16 years to "screen" for myopia status and to assess the lifetime risk of myopia, based on a national birth cohort. METHODS 1867 members of the 1958 British birth cohort for whom there were data on acuity at 16 years had autorefraction, as part of a biomedical survey, at 45 years. Reduced uncorrected DVA at age 16 yea...

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Axial elongation of the myopic eye has the potential to stretch the retina, thereby reducing the sampling density of retinal neurons. Resolution acuity in the peripheral field of normal eyes is known to be sampling-limited, which suggests that retinal stretching in the myopic eye should have a direct effect on resolution acuity everywhere in the visual field except perhaps the fovea, which is u...

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Visual Acuity and Comfortable Distance from a Display

The image perception in humans depends on many factors. One of the most important ones is certainly the observing distance. The distance from which human look at the images is important for studying image perception in general and in particular on display devices. This paper describes a method of measurement of the preferred observing distance among humans of different age, sex, etc. under cont...

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A Contralateral Eye Study Comparing Apodized Diffrative and Full Diffrative Lenses: Wavefront Analysis and Distance and Near Uncorrected Visual Acuity

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How to measure distance visual acuity

Procedure • Ensure good natural light or illumination on the chart. It is important to ensure that the person has the best possible chance of seeing and reading the test chart as treatment decisions are made based on the results of VA testing. • If the test is done outdoors, the chart should be in bright light and the patient in the shade, with enough light to illuminate the patient’s face duri...

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ژورنال

عنوان ژورنال: British Journal of Ophthalmology

سال: 2007

ISSN: 0007-1161

DOI: 10.1136/bjo.2006.102277