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Biomedical subjects

L Bieganowski

Publications and source records attributed to L Bieganowski.

At least 19 recordsLinked to original sources
PubMed1999

[Phantom vision phenomenon].

The subject of the paper is the phenomenon of phantom vision. It occurs among the blind (or almost blind) and is characterised by perceiving various visual sensations, for example: light, geometrical shapes, buildings, people, flowers etc. The paper presents views explaining the generation of phantom vision. According to Melzack's theory, the occurrence of these sensations is explained in relation to the phenomenon of transforming the neuro-activity of the brain in a specific--for each organ--neuronal network called neuromatrix. Even if some organs do exist but have ceased to function completely (or to a significant degree) and consequently the brain does not receive any sensory stimuli from them, the neuromatrix in brain can generate visual sensations constituting the phantom vision phenomenon. The paper also presents three cases of phantom vision.

Aged↗
PubMed1998

[The role of the spontaneous occurrence of Pulfrich's stereophenomenon in the diagnosis of demyelinating diseases of the central nervous system].

PURPOSE: Checking the usefulness of the spontaneous occurrence of Pulfrich's stereophenomenon in the diagnosis of demyelinating diseases. MATERIAL AND METHODS: Research embraced 22 patients with visual disturbances (including 9 patients with retrobulbar neuritis and others with anterior ischaemic neuropathy, central retinal vein occlusion, intrabulbar optic neuritis and traumatic atrophy of the optic nerve). The research also embraced 27 patients with demyelinating diseases (sclerosis multiplex). RESULTS: Spontaneous occurrence of Pulfrich's stereophenomenon was reported in 9 retrobulbar neuritis patients. It was also reported in 24 demyelinating patients. CONCLUSION: This simple Pulfrich's pendulum test is positive in 92% of demyelinating patients, including all patients with SM and retrobulbar neuritis.

Demyelinating Diseases↗
PubMed1996

[Use of Pulfrich's stereo-phenomenon in determining stereoscopic vision].

PURPOSE: To check whether a test based on Pulfrich's stereophenomenon can be applied to determine stereopsy. MATERIAL AND METHODS: The group of 24 patients with normal visual acuity and stereopsy and 15 with ambylopia without stereopsy were tested with Pulfrich's pendulum test. RESULTS: This method yielded 24 positive and 15 negative cases confirming the previous assessments. Neither false positive nor false negative cases were recorded. CONCLUSION: The simplicity and reliability of this method in determining stereopsy provide arguments for its widespread use.

Adult↗
PubMed1993

[Microsurgical modification of Allen's glaucoma operation].

The modified anti-glaucomatous operation, introduced its classical version by Allen, has been presented in this paper. The microsurgical version could be defined as micro-cyclodialysis with basal iridectomy, combined with the restoration of the anterior chamber. The surgery was performed in simple glaucoma and glaucoma in aphakic eyes. The details of the surgery and the illustrations of its respective phases have been presented. The results were based on clinical observation of 41 patients. The satisfactory results, up to 6 months, were obtained in 85.3% of the patients. Later the percentage decreases to 78%. For 10 aphakic eyes stabilization was obtained in 9 cases.

Adult↗
PubMed1990

Father Waclaw Szuniewicz, M.D., an ophthalmologist of unusual courage and devotion.

The authors present a short biography of the missionary-priest ophthalmologist Waclaw Szuniewicz (1892-1963). This remarkable man completed his ophthalmologic training between 1922 and 1927 at the Department of Ophthalmology of the Stefan Batory University in Wilno, Poland. From 1931 to 1949 he served as a missionary priest in China, and for part of this time he was the head of the Department of Ophthalmology at a hospital in the Chinese town of Shuntehfu. He organized and ran a 100 bed ophthalmology department there, also supervising 18 outpatient clinics in the surrounding area. During this period he regularly saw over 145,000 patients and performed over 5000 ophthalmic operations a year! From 1949 to 1952 Dr Szuniewicz carried out research work on the surgical treatment of corneal astigmatism. His interesting refractive procedures were done at Yale University in the USA and the techniques he developed arose from the work he had initially done in China from 1946 to 1948. Dr Suniewicz moved from the USA to Brazil in 1952 where he continued his refractive surgery research until 1954 and his missionary service until his death in 1963.

History, 20th Century↗
PubMed1989

[Not Available].

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History, Ancient↗
PubMed1986

[Not Available].

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History of Medicine↗