The Characteristics Of Pupillary Light Reflex In Normal And Amblyopic Children

Objective:Investigate the6-10year-old normal and the characteristics of children with amblyopia pupillary light reflex, visual sensitive period of amblyopia in children of early screening and diagnosis and treatment of amblyopia therapy to provide the relevant reference.Method:Application of pupil test instrument developed by the Kunming Institute of Zoology. Chinese Academy of Sciences detected60cases of children with amblyopia,60cases of anisometropic children and60cases of refractive amblyopia children in the pupillary light reflex parameters. From start to light by five parameters (dark-adapted pupil pixel values in the late only to the light stimulus ASC,to light after the pupil area to shrink to the minimum pixel value AN; to the pupillary constriction area the most hours of the time of the pixel values of the TC. the pupil shrinkage S; pupil constriction average speed CV) measurement, non-visually impaired children with refractive amblyopia among children, children with anisometropie amblyopic eye between the non-amblyopic eyes of anisometropie amblyopia and refractive amblyopia in children light severe, and some ehildren with refractive amblyopia before and after the visual acuity improved after treatment training, anisometropie children of non-visually-impaired eye with normal non-visually impaired children between the eyes, the eyes of the amhlyopic eyes of80anisometropie children with refractive amblyopia ehildren, as well as in a total of non-amblyopic eye and180of the amblyopic eye between the two sets ofdata were statistically analysis.Result:1. Refractive amblyopia children with normal (non-visually-impaired) children compared to children with amblyopia pupil area than non-visually impaired children, regardless of miosis in the dark adaptation after the end or a light stimulus to a minimum; pupil from the dark adaptation of the late to shrink to a smaller average minimum systolic velocity and pupil maximum shrinkage, contraction time, the differences were statistically significant (P<0.05).2.Amblyopic eyes of anisometropic amblyopia in children with non-amblyopic eye compared to the amblyopic eye's pupil area than non-visually impaired children, regardless of miosis in the dark adaptation of the late or light stimulus to a minimum; pupil to the end of the dark adaptation shrink to a smaller average minimum systolic velocity and pupil maximum shrinkage, contraction time, the differences were statistically significant (P<0.05).3.Refractive amblyopia in children light moderate and severe groups compared with the deepening of the degree of amblyopia, the pupil area larger, whether it is reduced to the minimum in the dark adaptation of the late or light to stimulate the pupil; pupil from the dark adaptation of the late shrink to a smaller average minimum systolic velocity and pupil maximum shrinkage, contraction time, the differences were statistically significant (P<0.05).4. Anisometropic children light, moderate and severe groups compared with the deepening of the degree of amblyopia, the pupil area larger, whether it is reduced to the minimum in the dark adaptation of the late or light to stimulate the pupil:pupil from the dark adaptation of the late shrink to a smaller average minimum systolic velocity and pupil maximum shrinkage, contraction time, the differences were statistically significant (P<0.05).5.Ametropic comparison of before and after the treatment training for visually impaired children after treatment, corrected visual acuity improved, smaller pupil area, whether it is reduced to the minimum pupil in the dark adaptation of the late or light stimulus; pupil to shrink from the end of dark adaptation to a minimum The larger value of the average systolic velocity and pupil maximum shrinkage, contraction time, the differences were statistically significant (P<0.05).6.Anisometropic amblyopia in children of non-amblyopia eye and normal non-visually-impaired children eyes contrast, the pupil area is too large, whether it is reduced to the minimum pupil in the dark adaptation of the late or light stimulus; the end of the dark-adapted pupil to shrink to the smallest the average value of systolic velocity and pupil maximum shrinkage is small, the contraction time, the differences were statistically significant (P<0.05).7.The contrast of the amblyopic eyes of anisometropic amblyopia in children with refractive amblyopia children's eyes, small pupil area, regardless of miosis in the dark adaptation of the late or light stimulus to a minimum; the pupil to shrink to the end of the dark adaptation The minimum average systolic velocity and pupil maximum shrinkage rate is too large, contraction time, the differences were statistically significant (P<0.05).8.The average systolic velocity of180amblyopic eye and the contrast of the180non-amblyopic eye, the former pupil larger, both miosis after dark adaptation of the late or light stimulus to a minimum; the end of the dark-adapted pupil to shrink to the minimum smaller maximum contraction rate and pupil contraction time, the differences were statistically significant (P<0.05).Conclusion:1.children with amblyopia (eye) and compared to normal children with amblyopia (eye), pupil larger, the sensitivity of the pupillary light reflex and the contraction amplitude is small, and is directly related to the degree of amblyopia, indicating that the pupil tester amblyopiathe clinical diagnosis of a certain value.2.children with amblyopia (eye) trained treatment, corrected visual acuity improved after the pupil area smaller increase in sensitivity and contraction amplitude of the pupillary light reflex. Therefore, the pupil tester can be used as a means of detection of amblyopia assessment.