Search PubMedSearch

PubMed · 7609400

[Personal computer used in visual function screening].

Abstract

BACKGROUND: The number of medical screenings is increasing. This fact is specially pronounced in the field of occupational health. Due to restricted financial resources and limitations in time there is a need for rationalisation in medical screenings. MATERIALS AND METHODS: Possible uses of personal computers (PC) enabling organisational and financial benefits in medical screenings are suggested. By means of a test for colour-blindness it is shown how unfavourable technical conditions may be by-passed. RESULTS AND DISCUSSION: Rationalisation in medical screenings can be achieved when using the PC as a multi-functional screening-device as well as an expert system, measuring apparatus and as a communication-device. Due to a lack of literature it is difficult to discuss possible effects of technical differences between PC-based screenings of visual functions and screenings where "traditional". Reliability, sensitivity and validity is insufficiently investigated for many of the commercial available screening-devices based on a PC.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

M Menozzi. 1995. [Personal computer used in visual function screening].. https://doi.org/10.1055/s-2008-1035476

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

[The history of research in color perception as a key to understanding various forms of congenital defects in red-green perception].

It is accurate to date the first scientific report about colour-deficiencies on 1777. Earlier descriptions may be followed up to the end of the 17th century. But usually it is only mentioned, that mistakes had happened. Huddart 1777, however, reported for the first time, that more than one person was involved in a family and that demonstrations of coloured ribbons helped to find out which colours became confounded. The famous self-observation of Dalton contains the assortment of individually combined silk-threads, which is an anticipation of subsequent arrangement-tests. Goethe developed a systematic arrangement-test of self-made small coloured targets with colours out of his own colour-wheel. A. Seebeck was the first who--using the spectrum for examination--found out that a special group of subjects showed a shortening of the spectrum at the red end. From this result Helmholtz concluded the existence of two types of red-green blindness. This new argument for the trichromatic organisation of our colourvision was the basis for the statement of the three types: protanopia, deuteranopia and tritanopia (v. Kries, A. König). Rayleigh later on succeeded in finding out anomalous trichromats following preparatory examinations of Maxwell. Nagel has the merit to have analysed protanomaly and deuteranomaly using the anomaloscope constructed by himself. Side by side with the spectral colour-tests pseudoisochromatic plates were developed for diagnostic purposes, at first thought out and introduced by Stilling and in the meantime used in many variations.

Color Perception Tests

A suitable study to evaluate colour vision requirements for firefighters?

A recent paper by Rees (Occup. Med. 1994; 44: 253-256) has proposed a study to evaluate the performance of both clinical and trade tests on firefighter recruits. The paper suggests that a new trade test using painted gas cylinders and/or the BOC cylinder identification chart may be appropriate in the selection of firefighter recruits. Evaluation of pass/fail standards on these tests would be achieved by comparing the results with those obtained from the Ishihara test, the City University test and the Holmes-Wright lantern test. In this paper, we argue that the proposed battery of tests does not allow an accurate evaluation of the new trade tests. Indeed,the new trade tests are likely to result in a false sense of obvious fairness' that ultimately be an unsound means of assessing the colour vision requirements of firefighter recruits.

Color Perception Tests