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Biomedical subjects

W Jaeger

Publications and source records attributed to W Jaeger.

At least 109 records · Page 6Linked to original sources
PubMed1977

[Vitelline macular degeneration and Best's macular degeneration are the same disease (author's transl)].

In 1905 F. Best had discovered infantile macular degeneration with dominant transmission, later named after him. From Best's pedigree 19 members could be examined by us. Besides the usual examination-methods, EOG, ERG, Fluorescein-Angiography and Chromato-Ophthalmoscopy were applied. In this way the characteristic findings of vitelline macular degeneration could be demonstrated. 7 family-members were typically affected according to their ages. 2 of them were found to be carriers with normal macula; they had however a pathological EOG. The question, if the diagnosis of Best's macular degeneration should be used further in the system of the hereditary macular degenerations or whether it is indeed the same disease as vitelline macular degeneration, is discussed. Best's macular degeneration and vitelline macular degeneration are synonymous. We recommend, that the term vitelline macular degeneration ought to be used intead of Best's macular degeneration. It remains F. Best's merit, that this disease has been recognised and des

Adolescent↗
PubMed1976

[Stereoscopic microscope-spectacles for use in eye operations (author's transl)].

A magnification system newly developed by Zeiss on the basis of a Keplerian telescope permits, in connection with a direct-vision erecting prism, the design of stereoscopic surgical spectacles and thus a break into the microsurgical range. The magnification of 8.3X is just about the limit up to which muscular movement of the head is not disturbing, but on the other hand routine microsurgery, especially cataract and glaucoma surgery, is rendered possible.

Cataract Extraction↗
PubMed1976

Colour vision deficiencies and haemophilia.

Our investigations have following results: In the Rath-von Verschuer family, which is so extraordinary that the authenticity sometimes had been doubted, we found that crossing overs which were present in 50% of the cases were shown by the combination of protan defect and haemophilia B. This corresponds exactly to the observation of Whittaker and co-workers, who starting from that fact, concluded that there was a remarkable distance between the protan gene and haemophilia B gene on the chromosome. The observation enlarges the number of pedigrees with the combination of protan defect and haemophilia B. At the same time, however, we are doubtful that there might be a probable preference for this combination. With regard to the question whether manifestation of protanopia and protanomaly in any given form could be influenced by an additional factor in the X-chromosome, our present investigations give no reliable data.

Color Vision Defects↗
PubMed1976

[Reading aids for blind persons. Technical possibilities, practice up to now, and future development (author's transl)].

This report deals with electronic reading aids enabling patients with a visual acuity of less than 1/50 to read black-and-white-printed matter. A survey on experience with the Optacon from 1971 on is furnished and the chances of vocational training and the use of supplementary aids. The very handy Optacon (weight: 2 kg) consists of a miniature opto-electronic camera, and a tactile stimulator area consisting of 144 tiny metal rods. The development of another very useful instrument in the hands of the blind looks toward completion: The Braille-Converter. Its functions in short: A TV camera with an intermediate computer which transfers optical information into braille or spoken language.

Adult↗