ISSN:0093-7002    

出版商:OVID    

年代:1981

数据来源: OVID

摘要:

AbstractPredictions of effective powers of flexible contact lenses including tear lenses, or assuming alignment, are compared with actual equivalent sphere effective powers of 12 low-minus and 2 high-plus lenses. The assumption of a tear lens improves accuracy of prediction.

ISSN:0093-7002    

出版商:OVID    

年代:1981

数据来源: OVID

摘要:

AbstractTwenty-nine subjects were fitted with PMMA contact lenses of equal overall diameter, optical zone diameter, and z-value in a double-masked clinical trial. Five different treatment groups were analyzed and a one-way analysis of variance was used to determine whether significant differences in corneal thickness change existed between the treatment groups. Lenses fitted 1 D flatter than “K” caused the least amount of corneal thickness change.

ISSN:0093-7002    

出版商:OVID    

年代:1981

数据来源: OVID

摘要:

AbstractA government task force on vision care delivery in British Columbia studied the practice patterns of optometrists in that province. Their aim is to develop a coordinated system of vision care. A questionnaire was mailed to all optometrists in the province. The 84% response rate, with representative regional distribution, gave information on professional time spent in various activities, the use of assistants, indications of attitudes toward and participation in community activities, and satellite practices.The information is compared with other studies and inferences are made in relation to workload and the efficient allocation of time. Special note is made of political and other factors that must be rationalized in order to provide a coordinated system of vision care which utilizes the expertise of optometrists in an optimal manner.

ISSN:0093-7002    

出版商:OVID    

年代:1981

数据来源: OVID

摘要:

AbstractCentral corneal thickness changes during the wearing of hydrogel lenses under closed-eye conditions were measured for two subjects. Each wore an investigational ultrathin Bausch & Lomb Soflens contact lens (series X-176) on one eye only under closed-eye conditions for periods ranging from 30 min to 6 hr. The other eye served as a control.Corneal thickness of the control eyes increased gradually and reached a maximum increase of about 4% at the end of the 4-hr wearing trial. Corneal thickness in the experimental eyes also increased with wearing time during the first 4 hr and then remained fairly constant up to a wearing time of 6 hr. The maximum thickness increases for the two subjects were 9.8 and 9.1%, respectively. About 80% of the maximum corneal thickness change was present after 3 hr of closed-eye contact lens wear. The corneal thickness in the control eye returned to baseline 80 min after removal of the contact lens. Corneal thickness of one experimental eye returned to baseline 2 hr after the contact lens was removed.

ISSN:0093-7002    

出版商:OVID    

年代:1981

数据来源: OVID

摘要:

AbstractOne hundred convergence insufficiency patients who did not meet Sheard's criterion at near were given a program of in-office and at-home training. The objective was to see if they would meet Sheard's criterion after training. Results were analyzed in terms of the numbers successfully meeting this criterion as well as other criteria, i.e., Percival's, elimination of symptoms, improvement of stereopsis, and elimination of fixation disparity. Of the 100 patients, 84 successfully met Sheard's criterion after therapy. Failure to meet Sheard's criterion correlated well with having subjective symptoms.

ISSN:0093-7002    

出版商:OVID    

年代:1981

数据来源: OVID

ISSN:0093-7002    

出版商:OVID    

年代:1981

数据来源: OVID

ISSN:0093-7002    

出版商:OVID    

年代:1981

数据来源: OVID