摘要:

This paper contains the results of a survey of 1549 optometry students who responded to a questionnaire that was sent to all optometry schools and colleges in the United States. The results reflect student attitudes and opinions about such issues as commercial optometry, malpractice suits, price advertising of glasses and professional services, and the cost of professional education. In addition, the survey results disclose the reasons students enter the profession, their anticipated modes of practice, and their expected incomes. We believe that the issues encompassed in this survey will affect the future practice of optometry.

ISSN:0093-7002    

出版商:OVID    

年代:1977

数据来源: OVID

摘要:

An inexpensive, commercially available optical device was tested on 10 patients with retinitis pigmentosa to determine its value as a field expander for scanning and as an aid to mobility. Visual acuity and visual fields were measured with and without the expander, and the patients' subjective responses were monitored by a questionnaire that was administered at regular intervals during a 2− to 4-week period between test sessions. Six of the 10 subjects considered the device helpful in at least 1 important visual task and planned to continue using it.

ISSN:0093-7002    

出版商:OVID    

年代:1977

数据来源: OVID

摘要:

Ten amblyopes had their visual acuity measured once a week for 6 weeks using a Snellen chart (whole chart and single line) and a newly developed E chart was designed specifically for testing the acuity of amblyopes. For each test at each trial, the subject's acuity responses were graphically plotted and were fitted by a least-squares straight line to the central-most data. The reliability (repeatability) of the 50% threshold acuity was compared for the 3 acuity tests. The new E chart was the most reliable and the Snellen single-line test was the least reliable. These results have complications for quantifying acuity improvement during and following amblyopia therapy. The slope of the fitted acuity line may have value in assessing the prognosis for treatment.

ISSN:0093-7002    

出版商:OVID    

年代:1977

数据来源: OVID

摘要:

A survey of 3,494 patients under 40, who were examined in an urban optometric center, showed that 0.4% of the sample had glaucoma and an additional 0.2% had suspected glaucoma. The clinical implications of glaucoma in persons under 40 are discussed.

ISSN:0093-7002    

出版商:OVID    

年代:1977

数据来源: OVID

摘要:

An eye may be refracted by making independent measurements of spectacle correction in 3 or more preselected meridians. This paper presents a method for calculating sphere power, cylinder power, and axis, from meridional data taken in evenly spaced axes (such as 45, 90, 135, and 180 deg). The formulas given are equivalent in accuracy to a method previously published and are simpler to apply. Meridional techniques can simplify the patient's task in a subjective refraction and are therefore more suitable for automation than the traditional subjective techniques using crossed cylinders. Methods that might usefully be coupled with this technique include laser and stenopaic slit refraction and streak retinoscopy.

ISSN:0093-7002    

出版商:OVID    

年代:1977

数据来源: OVID

摘要:

The radii of curvature of 10 astigmatic corneas (1.125 to 3.625 D) were measured by photokeratoscopy in 4 semimeridians: 2 axis semimeridians and 2 power semimeridians. Most of the angular separations between adjacent semimeridians differed from 90 deg by more than 2.5 deg; the separations ranged from 55 to 120 deg. Corneal astigmatism, as specified by the difference in curvature between adjacent axis and power semimeridians at corresponding distances from the corneal apex, was also highly asymmetric with decreasing astigmatism in the corneal periphery. An interesting revelation was the interchange of the axis and power semimeridians in the periphery of 3 subjects' corneas.

ISSN:0093-7002    

出版商:OVID    

年代:1977

数据来源: OVID

摘要:

A method is described of modifying the Bausch & Lomb Autoplot® to obtain background and test target luminances of 10.02 cd/m2 and 32.8 cd/m2, respectively. Together with the use of a 2-mm target, these test conditions closely correspond to those of the Goldmann perimeter. These conditions can be maintained to provide more standardized perimetry than is currently available with the Autoplot.

ISSN:0093-7002    

出版商:OVID    

年代:1977

数据来源: OVID

摘要:

With-the-rule astigmatism increased by more than 3 D in 2 habitual long-term wearers of contact lenses after they abruptly stopped wearing their lenses. Reducing wearing time gradually over a 2− to 3-month period caused less than 1 D increase in with-the-rule astigmatism in 2 other long-term wearers. All 4 persons had worn polymethylmethacrylate contact lenses for 12 or more years.

ISSN:0093-7002    

出版商:OVID    

年代:1977

数据来源: OVID

摘要:

A modification of the conventional technique of pupillary analysis that maximizes the ability of the clinician to interpret pupillary abnormalities, especially in aging patients, is presented. The technique, which utilizes the principle of lenticular fluorescence from “black-light” (ultraviolet) stimulation, employs equipment that is readily available to clinicians.

ISSN:0093-7002    

出版商:OVID    

年代:1977

数据来源: OVID

ISSN:0093-7002    

出版商:OVID    

年代:1977

数据来源: OVID