PURPOSE It is challenging to separate the effects of normal aging of the retina and visual pathways independently from optical factors, decreased retinal illuminance, and early stage disease. This study determined limits to describe the effect of light level on normal, age-related changes in monocular and binocular functional contrast sensitivity. METHODS We recruited 95 participants aged 20 ...

teriovenous malformation was diagnosed 19 years earlierwhen seizures occurred. She was initially treated with carbamazepine, phenytoin, and phenobarbital. A few years later a right hemiparesis developed, which subsequently improved with treatment. One year be¬ fore admission, again a progression of the hemiparesis was noticed. Otherwise, the patient's medical history did not disclose any other ...

in this paper a first step in classifying the fuzzy normalsubgroups of a finite group is made. explicit formulas for thenumber of distinct fuzzy normal subgroups are obtained in theparticular cases of symmetric groups and dihedral groups.

PURPOSE To derive norms for monocular grating acuity and interocular acuity differences that are appropriate for clinical applications using the acuity card procedure (ACP) and Teller Acuity Cards (TAC). METHODS Monocular acuities were measured in 460 children in 12 age groups between 1 month and 4 years. Inclusion criteria were term birth, good general health and normal development, normal e...

IT IS WELL KNOWN that in polyeythemia rubra vera the total blood volume increases as the hematocrit level rises beyond approximately 55 per cent.1-2 This increase masks the extent of the polycythemia and insures that the plasma volume is not greatly diminished despite an increase in red cell volume to twice or three times the normal value. The changes in adults suffering from cyanotic congenita...

IT IS WELL KNOWN that in polyeythemia rubra vera the total blood volume increases as the hematocrit level rises beyond approximately 55 per cent.1-2 This increase masks the extent of the polycythemia and insures that the plasma volume is not greatly diminished despite an increase in red cell volume to twice or three times the normal value. The changes in adults suffering from cyanotic congenita...