[A study of visual function in XXXX --mechanism of visual improvement after stereotactic superior colliculectomy].

@entity1 @entity6459 @entity2194 @entity267 @entity400 @entity9529 @entity346
The clinical features of @entity9529 ( @entity9529 ) were studied statistically in 106 cases of @entity9529 . The point of the @entity346 at which the @entity1 could best see the targets was detected in some @entity1 . The effects of superior colliculectomy on their visual disturbance and the mechanism will be discussed. The study population comprises 106 @entity1 , 79 males and 27 females, aged from one to 64 (mean 19.4 years). @entity1 with jerky type classified on @entity6459 were found in 53 cases (50%), pendular type in 39 cases (37%), and mixed type in 14 cases (13%). @entity1 with jerky type showed significantly good visual acuity (mean 0.69 +/- 0.31, p less than 0.005). They showed significant abnormalities during pregnancy and delivery (p less than 0.01) and had a neutral point (p less than 0.01). @entity1 with pendular type, on the other hand, showed poor visual acuity (mean 0.26 +/- 0.30) and had significant frequency of family history (p less than 0.05), head @entity400 (p less than 0.01) and strabismus (p less than 0.01). Thirteen cases (12%) had @entity2194 which involved the retina, @entity267 and optic nerve. Visual function was elaborated on such parameters of @entity6459 as perception, peak variation and plateau time. Perception, which means the ability to detect the dim flashes during the appearance of the @entity346 , was manifested by pushing a button when @entity1 could detect flashes presented at random on the screen. At the turning point from the quick phase to the slow phase, the detection was executed most successfully. It is thought that in @entity9529 , a target is usually gazed upon at a point, changing the direction from the quick phase to the slow phase.(ABSTRACT TRUNCATED AT 250 WORDS)
