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1. |
Independence of Convergence and DivergenceNorms, Age Trends, and Potentiation in Mechanized Prism Vergence Tests |
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American Journal of Optometry and Physiological Optics,
Volume 56,
Issue 3,
1979,
Page 143-152
VAEGAN DAVID,
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摘要:
Motor-driven prism stereoscope vergence tests, base in break, base in recovery, base out break, and base out recovery, repeated three times (BIB, BIR, BOB, BOR x 3) were given to three separate groups. Two instruments with different speeds were used. Repeated testing shows a slight trend to convergence in slower machines. The results from both machines are still comparable. Means are similar to previously published norms from hand-turned instruments, but the variance of scores is about twice as large and there is an eso trend at near. The motor drive aids discrimination, since Ss who are capable can now follow with smooth vergences over a wider range. In general, there is no substantial trend with age between 3 and 25 years other than those which may be due to decreasing response times. Vergence scores can be adequately reduced to two independent factors, loading on convergence and divergence, respectively, which suggests that there are two processes varying independently in maturation and therapy as well as assessment.
ISSN:0093-7002
出版商:OVID
年代:1979
数据来源: OVID
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2. |
Contrast Thresholds Vs Border EnhancementSensitivity to Retinal Defocus |
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American Journal of Optometry and Physiological Optics,
Volume 56,
Issue 3,
1979,
Page 153-162
ARNULF,
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摘要:
The two visual responses, contrast threshold and border enhancement, are both affected by retinal image quality. Thus, with increasing defocus of the retinal image, contrast thresholds with sinusoidal line gratings increase, and the enhanced region near a border becomes wider. These two visual responses were compared to determine their suitability as gauges of retinal image quality. Border enhancement was found to be more sensitive to deterioration of the retinal image in the form of defocus than contrast thresholds throughout the greater portion of the grating frequency spectrum. However, the contrast threshold increases in sensitivity toward cutoff frequency, and beyond a certain high frequency it surpasses border enhancement in that respect. At the same time, for these optimum frequencies, the contrast range is exhausted within a relatively small defocus range. Therefore, a limitation is imposed on the usefulness of the contrast threshold as an index of retinal image quality.
ISSN:0093-7002
出版商:OVID
年代:1979
数据来源: OVID
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3. |
Overlooked ResourcesThe Place of the Library in Visual Science Research |
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American Journal of Optometry and Physiological Optics,
Volume 56,
Issue 3,
1979,
Page 163-174
LINDA,
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摘要:
Effective research should be based on familiarity with what has already been accomplished in the field. The best place to look for this information is a library, since even the most widely read professional may miss much that is relevant. Libraries not only provide access to their own holdings but assist the investigator by means of computerized literature searches and the use of indexes, abstracts, and other forms of printed reference material. Efficient use of Iibrary facilities can aid research and facilitate preparation of grant proposals.
ISSN:0093-7002
出版商:OVID
年代:1979
数据来源: OVID
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4. |
Monroe J. Hirsch Receives Charles F. Prentice Medal |
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American Journal of Optometry and Physiological Optics,
Volume 56,
Issue 3,
1979,
Page 175-176
&NA;,
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ISSN:0093-7002
出版商:OVID
年代:1979
数据来源: OVID
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5. |
Prentice Memorial Lecture |
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American Journal of Optometry and Physiological Optics,
Volume 56,
Issue 3,
1979,
Page 177-183
MONROE HIRSCH,
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ISSN:0093-7002
出版商:OVID
年代:1979
数据来源: OVID
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6. |
Clinical Health Services Delivery of Professional Schools as a Public Policy Issue |
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American Journal of Optometry and Physiological Optics,
Volume 56,
Issue 3,
1979,
Page 184-186
ALDEN HAFFNER,
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ISSN:0093-7002
出版商:OVID
年代:1979
数据来源: OVID
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7. |
Knowledge and Use of Eye Care Services by College and Health Professional StudentsImplications for the Profession |
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American Journal of Optometry and Physiological Optics,
Volume 56,
Issue 3,
1979,
Page 187-192
MORT SOROKA,
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摘要:
A questionnaire survey of 1277 students in colleges of liberal arts, medicine, pharmacy, nursing, dentistry, and podiatry was undertaken in an effort to determine their knowledge and use of vision care services. Students were asked to define the differences among optometrists, ophthalmologists, and opticians. Utilization, type of practitioner used, and site of examination are reported. About 56% had had an examination within the past year. Optometrists provided at least 40% of the examinations, but the confusion in the minds of the students is revealed by the fact that some said they were examined by opticians, some by the Department of Motor Vehicles, and some by a person they were not able to identify. Clearly, optometry and the related disciplines have a responsibility to clarify the public confusion.
ISSN:0093-7002
出版商:OVID
年代:1979
数据来源: OVID
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8. |
A Survey of Intraocular Pressures with Emphasis on Patients Under Ten Years of Age |
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American Journal of Optometry and Physiological Optics,
Volume 56,
Issue 3,
1979,
Page 193-196
S. RICHTER,
D. HORN,
H. BERGKNOFF,
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摘要:
This paper presents the results of a cross-sectional survey of intraocular pressures in patients of the University Optometric Center, the clinical facility of the State College of Optometry, SUNY. The study consisted of two parts: a pilot study conducted by one of the authors and a survey of patient records that were reviewed at random with particular emphasis on patients under 10. The results indicate that the intraocular pressure norms used to evaluate the general population are also appropriate for evaluation of patients under 10 years of age.
ISSN:0093-7002
出版商:OVID
年代:1979
数据来源: OVID
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9. |
Strabismic Amblyopia in Infants |
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American Journal of Optometry and Physiological Optics,
Volume 56,
Issue 3,
1979,
Page 197-201
JOSEPH THOMAS,
INDRA MOHINDRA,
RICHARD HELD,
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摘要:
Monocular acuities, in two infants with nonaccommodative comitant esotropia, were measured before and during occlusion therapy. The results indicate that strabismic amblyopia is present within the first year of life and that the infant visual system is remarkably sensitive to short periods of monocular occlusion during this time period.
ISSN:0093-7002
出版商:OVID
年代:1979
数据来源: OVID
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10. |
Hypophyseal Adenoma—A Case Report Follow‐up |
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American Journal of Optometry and Physiological Optics,
Volume 56,
Issue 3,
1979,
Page 202-205
BARRY SCHNEIDER,
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摘要:
A patient with bitemporal hemianopia due to a pituitary tumor was followed postsurgically for 4 years. Visual fields and acuities were assessed at regular intervals under the same lighting conditions and with the same instrumentation. The changes in the visual field were both striking and unusual, as they did not correlate with those reported in the literature in other patients with pituitary tumors.
ISSN:0093-7002
出版商:OVID
年代:1979
数据来源: OVID
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