摘要:

Stereograms are classified into those with constant disparity and those with continuously variable disparity. The first class gives rise to the perception of a displaced flat plane, the second gives rise to the perception of a tilting surface. The former class includes most of the stereograms studied to date: the latter includes those derived from considerations of aniseikonia. Certain ramifications of this classification arc noted. as well as the limits it sets on possible brain models of binocular stereoscopic function.

ISSN:0002-9408    

出版商:OVID    

年代:1972

数据来源: OVID

摘要:

An artificial cornea has been designed and produced which can be used to calibrate and evaluate and control the tonogram producing qualities of Mackay-Marg tonometers. The device has also shown promise of utilization with other types of tonometers.

ISSN:0002-9408    

出版商:OVID    

年代:1972

数据来源: OVID

摘要:

The paper describes an automatic system for conducting the case history interview, a necessary part of an eye examination. Questions are asked of the patient over a loudspeaker from a pre-recorded audio magnetic tape, played on a random-access tape deck controlled by a small, general-purpose digital computer. The patient responds to these questions through one of three pushbuttons labeled YES, DOUBTFUL, and NO. Hardware and software design is presented in detail, together with results of clinical trials employing a total of 80 patients. Results show reliable identification of primary and secondary complaints, the latter being found more reliably than in normal interviews of the same patients.

ISSN:0002-9408    

出版商:OVID    

年代:1972

数据来源: OVID

摘要:

Considerations leading to the design and construction of a prototype instrument suitable for retinoscopic photography are discussed, including an outline of its essential features.

ISSN:0002-9408    

出版商:OVID    

年代:1972

数据来源: OVID

摘要:

The methodology and instrumentation for producing a videotape recording of the retinoscopic reflex as seen in different refractive conditions is discussed, along with advantages, disadvantages, and implications for future research in this area. There are no reports in the literature of filming the reflex.

ISSN:0002-9408    

出版商:OVID    

年代:1972

数据来源: OVID

摘要:

The Ophthalmetron is an electro-optical instrument designed to determine the refractive state of an eye. The output is in the form of a graph which gives the refractive state for each meridian. The principle upon which its operation is based is described, and illustrations of its components and graphical output arc shown.

ISSN:0002-9408    

出版商:OVID    

年代:1972

数据来源: OVID

摘要:

Ninety-six dress hardened glass lenses were supplied by reputable, high quality optical laboratories in the Los Angeles area. These lenses were given the standard drop-ball test conforming to the Z.80.1 specifications. Thirty of the lenses broke upon testing. The analysis of breakage trends includes the results of a computer determined matrix correlation resulting in a factor analysts.

ISSN:0002-9408    

出版商:OVID    

年代:1972

数据来源: OVID

ISSN:0002-9408    

出版商:OVID    

年代:1972

数据来源: OVID

ISSN:0002-9408    

出版商:OVID    

年代:1972

数据来源: OVID

ISSN:0002-9408    

出版商:OVID    

年代:1972

数据来源: OVID