Biomedical subjects

M Lessel

Publications and source records attributed to M Lessel.

3 recordsLinked to original sources

PubMed1991

Intraoperative retinal light damage reflected in electrophysiologic data.

In a series of 30 unilaterally pseudophakic patients, electroretinograms and electrooculograms were recorded 6 months postoperatively. The unoperated on fellow eyes served as controls. High intraoperative retinal light exposure (3.4-7.3 mW/cm2, Zeiss OPMI6 operating microscope) caused a substantial reduction of electrophysiologic potentials. Light protection prevented deterioration of electroretinogram and electro-oculogram potentials; reducing the bulb voltage, tilting the axis of illumination, filtering short wavelengths and the use of light shields resulted in 4-log-unit lower intensities (0.8-3.7 microW/cm2).

Aged↗

PubMed1987

[Cryocoagulation of a prolapsed iris in hypertensive uveitis].

An ICCE was complicated by iris prolapse. Three years later the eye appeared quiet and intraocular pressure was normal when the patient was admitted for secondary implantation. An uneventful IOL implantation (CILCO MT 4U) was followed by hypertensive uveitis. Local and systemic corticosteroids and antihypertensive treatment were insufficient. Cryocoagulation of the bleb was performed. The inflammation rapidly subsided and intraocular pressure normalized without further therapy.

Aged↗

PubMed1975

[The problem of the origin of acoustic evoked responses (author's transl)].

The acoustic evoked response on the human scalp is analogous to potentials within many different levels of the central nervous system. Under special functional conditions such as the binaural interaction, evoked responses correspond only to subcortical potentials, indicating that the response does not represent cortical activity.

Acoustic Stimulation↗