摘要:

A brief review of the pharmacological action of cycloplegic drugs is followed by a specification of the doses and actions of five commonly used cycloplegics. Some criterion for selecting a cycloplegic are presented.

ISSN:0093-7002    

出版商:OVID    

年代:1978

数据来源: OVID

摘要:

The actions and indications of cycloplegics are presented along with recommended dosages and uses for clinical measures of refractive error.

ISSN:0093-7002    

出版商:OVID    

年代:1978

数据来源: OVID

摘要:

A minimum clinical history and examination preceding drug instillation is described. Clinically effective doses of topically applied cycloplegic agents are summarized. A presentation of the causes and incidence of adverse drug reactions, both systemic and ocular, is followed by a discussion of general guidelines for their prevention or management.

ISSN:0093-7002    

出版商:OVID    

年代:1978

数据来源: OVID

摘要:

Five aphakic patients and five phakic patients were fitted with high a plus Bausch & Lomb Soflenses®. We evaluated corneal edema, staining, vertical striae, and corneal thickness before and after a 5-hr wearing period. The high plus lenses produced average corneal-. thickness changes of 9.6% and 7.1 % for the phakic and aphakic groups, respectively. Biomicroscope examination showed moderate amounts of vertical striae, epithelial staining, and corneal edema for both groups. The amounts of edema, staining, and striae were high than when regular and thin minus lenses were worn. It is likely that the thickness of the high plus lenses reduces the oxygen supply to the corneal epithelium, causing relatively marked edema.

ISSN:0093-7002    

出版商:OVID    

年代:1978

数据来源: OVID

摘要:

Although optometrists can be expected to be responsible for the base curve, which determines the form of the lens they prescribe, they seldom specify the base curve to the optical laboratory. They may ask for a corrected-curve lens without specifying the kind of corrected-curve lens.If optometrists were to specify what they want in terms of a convex spherical base curve and allow the laboratory a leeway of ±1.00 of the laboratory could probably fill the order with an uncut lens from stock. With a series of semifinished lenses with convex spherical base curves spaced 2.00 D apart, the laboratory can supply a finished lens that will meet almost any need. For glasses to be used for distant objects, first consideration is usually given to minimizing the unwanted sphere and cylinder in the periphery of the lenses. For those who want to aim at this objective, I have worked out a series of convex spherical base curves that can be used for various combinations of spheres and cylinders.

ISSN:0093-7002    

出版商:OVID    

年代:1978

数据来源: OVID

摘要:

A computer-assisted subjective eye examination was administered to 80 patients. They were also examined in the conventional manual way. The results of the computer-assisted examination were compared with those obtained by conventional subjective methods to identify errors of hardware, software, and optometric flow charting and other problems. An 87.5% satisfactory prescription level was found for the distance prescription. The 12.5% unsatisfactory results are accounted for by several kinds of error. The percentage of unsatisfactory refractive results was greater for near than for distance measures because of special flow-chart and software problems, which were subsequently corrected. With implementation of the changes initiated as a result of this investigation, satisfactory refractive results approaching 95% can be expected.

ISSN:0093-7002    

出版商:OVID    

年代:1978

数据来源: OVID

摘要:

Border-enhancement spread is a new criterion for assessing the quality of the retinal image. In one study, it was found that the width of the enhanced region increases with the steepness of a contact lens fit, and this increase was attributed to scattering accompanying corneal edema arising from tight-fitting lenses. The present study tested this hypothesis. Corneal thickness and border-enhancement spread were measured concurrently at regular intervals during and after contact lens wear. It was found that border-enhancement spread generally follows changes in corneal thickness. Since scattering increases with corneal swelling, the findings generally support the hypothesis. However, it was also found that variables not originating in the cornea sometimes modify the retinal-image quality and thus mask the scattering effects. Future applications of the methods are discussed.

ISSN:0093-7002    

出版商:OVID    

年代:1978

数据来源: OVID

摘要:

A 3-year optometry program was established at the University of Benin, Nigeria in 1973. The program is considered from the standpoint of curriculum, faculty, clinical instruction, and grading. Some background is given about Nigeria itself. Present eye care facilities are reviewed as well as the increasing requirements of a developing nation. The need of strong support from established optometry schools is indicated.

ISSN:0093-7002    

出版商:OVID    

年代:1978

数据来源: OVID

ISSN:0093-7002    

出版商:OVID    

年代:1978

数据来源: OVID