Reports of the Committee on Vision 1947-1990 (1990) / Chapter Skim
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Clinical Applications
Clinical Applications
Pages 15-28
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From page 17... ...
This manual describes the testing technique to be followed at all testing stations. Descriptions of apparatus and procedures are given for testing heterophoria and prism divergence with the binocular photometer, with the portable monocular photometer, and with trial frame and loose prisms.
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From page 18... ...
It is understood that the use of optical instruments may become sufficiently general at some future date to warrant a revision of the manual Exact specifications of the test chart, the test room reflectances and illumination, and occluders are given The procedures for administering the test are described in detail, including phrases to be used in instructing the examinee. Scoring procedures are described in full.
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From page 19... ...
The majority of the members of this committee, however, felt that the design of test charts be such that reasonably accurate determinations of visual acuity itself could be made. A uniform decimal scale or fractional designation of visual acuity requires some type of a uniform graduation in the sizes of the letters of successive lines of the test chart.
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From page 20... ...
The visual functions examined in the standard form of the tester are vertical and lateral phoria at distance and near, right and left eye acuity at distance and near, and depth perception at distance. A special test of distance acuity is available for testing illiterate examinees.
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From page 21... ...
office, field, and screening instrument design should incorporate test parameters that produce relatively stable response states.
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From page 22... ...
The major emphasis is on the standardization of so-called distance acuity for distances approximating optical infinity. Recommendations are also made for tests at a suggested near distance of 40 cm (16 inches)
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From page 23... ...
Three problem areas were selected for consideration: the utilization of recently developed contrast sensitivity, the assessment and development of vision in infants, and localization of anomalies in the visual pathway. A concluding chapter summarizes the current very active state of the boundary between basic and clinical visual science.
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From page 24... ...
The revised and edited papers presented at this symposium constitute this report Nutritional research has identified some 45 substances as essential to our diet (National Academy of Sciences, Science and Technology, a FiveYear Outlook, W.H. Freeman & Company, 1981~; however the full range of cellular and tissue functions in which these essential nutritional substances participate is not known, and it is likely that additional research will identifier yet other substances as also essential nutrients.
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From page 25... ...
Myopia is the visual condition in which only nearby objects appear in focus, much like a camera permanently focused at a close distance. In a "normal" or emmetropic eye, distant objects are naturally in focus, like a camera focused at infinity.
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From page 26... ...
This report is the proceedings of a symposium organized by the working group held in San Antonio, Texas, on November 3 and 4, 1988, to describe current concerns regarding lenses to the military community (see Contact Lens Use Under Adverse Conditions: Applications in Solitary Aviation)
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From page 27... ...
, the Committee on Vision formed a working group to summarize current scientific, clinical, and technological issues in the use of contact lenses and to review the operational requirements of military personnel to the use of contact lenses under adverse conditions. These conditions are understood to challenge the integrity of the cornea and include the following effects: (1)
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