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Biomedical subjects

N Jeanrot

Publications and source records attributed to N Jeanrot.

4 recordsLinked to original sources
PubMed1990

[Functional vision disorders after head injuries].

The authors present the results of multilateral orthoptic examinations performed in 72 persons who suffered an injury to the head. They present the signs of a "subjective posttraumatic syndrome". The patients have been divided into 3 groups in dependence of the severity of the trauma. The first group (light injuries) did not show any substantial changes, the 2-d and 3-d group exhibited an increase of the physiological exophoria as well as disturbances of convergence. There was also a lowering of the relationship between the convergence accommodation and accommodation caused by a decrease of the accommodative convergence. The patients showed also an increase or reversal of the relationship divergence--convergence.

Accommodation, Ocular↗
PubMed1989

[Orthoptic treatment of accommodative strabismus].

Orthoptic treatment of accommodative strabismus is difficult because of variability of deviation and neutralisation. In first, the treatment of synoptophoria is practised more easily. It is often completed by optic treatment and medical treatment.

Accommodation, Ocular↗
PubMed1982

[Electrophysiology of the retina and peripheral vision of Nemobius sylvestris].

1. Intracellular recordings were made from the retinula units of the cricket Nemobius sylvestris. The half width of the angular sensitivity function was estimated at 4,4 degrees. This mean acceptance angle is slightly smaller than the interommatidial angle. In these conditions of light adapted state and for ommatidia of the central eye region, an overlapping between adjacent ommatidia occurs, but only below the 50% sensitivity level. 2. Extracellular positive responses with the waveform of a smoothed retinula receptor potential were recorded and their origin from lamina is postulated. They were strongly influenced by lateral interactions with the neighbouring ommatidia, and it was concluded that a lateral inhibition in the first optic ganglion of the cricket does exist.

Animals↗