摘要:

The accommoditative respong of normal and amblyopic subjects was measured ayer a range of stimulus values from two to seven D with a laser optometer incorporating the Badal system. The stimulus and respose were found to be linearly related for both normal and amblyopic eyes, but the reponse of the amblyopic eye in the higher values of stimulus was reduced.

ISSN:0093-7002    

出版商:OVID    

年代:1975

数据来源: OVID

摘要:

ABSTRACTThe discrimination of deptb and pattern was investigated using random dot stereograms. For all four subjects, the psychometric function for deptb judgments (probability of correct respouse) was clearly superior to pattern judgments over a range of ten crossed or uncrossed binocular disparity values. Degrading the visttal images either monocularly or binocularly, with various convex lens power (fogging lenses) reduced both depth and pattern discrimination across all disparity values, ratber than simply increasing the tbresholds.The results are discussed with references to current tbeories of stereopsis, and the question of the bierarchbial processing of depth and pattern information is cosidered.

ISSN:0093-7002    

出版商:OVID    

年代:1975

数据来源: OVID

摘要:

ABSTRACTA procedure has been developed for tracing a ray through a toric refracting surface The surface is defined in terms of a rectangular coordinate system. The ray is specified by the rectangular coordinates of a point tbrough which it passes and its direction-cosines.

ISSN:0093-7002    

出版商:OVID    

年代:1975

数据来源: OVID

摘要:

ABSTRACTLuminance tbresbolds were obtained for narrow bars of light in vertical, bori, zontal and oblique orientations. From 5° to 60° into the periphery, a small but significant elevation in tbresbold was found for stimuli in oblique orienations. The monocularly obtaained data replicate an carlier report using binocular presen, tations and a stimulus duration of 100 msec. When exposure time was 10 misec or 500 msec, this effect of orientation broke down. Theoretical implications are discussed.

ISSN:0093-7002    

出版商:OVID    

年代:1975

数据来源: OVID

摘要:

ABSTRACTSix hysterical amplyopes and six cuntrols. matched for age and sex, were evaluated as to acuity, color vision visual fields, dark adaptometry and visual fields. dark adaptometry and visual evoked responses (VER). Although the bysterical amplyopes all showed reduced acuity and constricted visual fields. no statistically significant differnens were found for the dark adaptating final thresbolds when compared to the control group VERs to stiuli which were varied with respect to brightness, color, frequency and pattern, did not statistically differentiate bysterical amblyopes from the control group The results appear from the control group The results appear to indicate the intactuess of the visual pathways up to and including cotriocal area 17 in bysterical amblyopia.

ISSN:0093-7002    

出版商:OVID    

年代:1975

数据来源: OVID

摘要:

ABSTRACTFour tables are presented listing the adverse effects of commonly used drugs on the human eye. Both brand names and generic names of drugs are used. The optometrist using the tables can look up either the drug (to find the adverse effects) or the symptom (to find the drugs that might cause it).

ISSN:0093-7002    

出版商:OVID    

年代:1975

数据来源: OVID

摘要:

The ability of assistants to screen for elevated intraocular pressure (IOP) with the non-contact tonometer was calculated. They bad ten minute of instruction with the instrument prior to the study. Theestimates by the estimates by the assistant corrclated highly with those of the optometrists. The patients' responses were favorable. It follows from this study that an assistant with numimal training can relibly performe IOP screening with the non-contact tonometer under the supervision of an optometrist.

ISSN:0093-7002    

出版商:OVID    

年代:1975

数据来源: OVID

摘要:

A stratified probability sample of the Ilouston. Texas population was interviewed to assess public opinion of national health care and public awareness of vision care and its role in a national health care system. Over 80% of the population suracyed are in favor of a national health care bill, with a large percentage of the population favoring inclusion of vision care. Demographic trends are reported as they relate to various questions in the survey, and comparisons are made to a similar questionnaire one year earlier.

ISSN:0093-7002    

出版商:OVID    

年代:1975

数据来源: OVID

ISSN:0093-7002    

出版商:OVID    

年代:1975

数据来源: OVID

ISSN:0093-7002    

出版商:OVID    

年代:1975

数据来源: OVID