Investigation on the onset and development of the subjective acuity in normal infant
10.3760/cma.j.issn.1008-1372.2011.z2.008
- VernacularTitle:婴幼儿主观认知视力可测性年龄发生与发育的探讨
- Author:
Xiaofeng WANG
- Publication Type:Journal Article
- Keywords:
Infants;
Visual acuity;
Test
- From:
Journal of Chinese Physician
2011;02(z2):22-25
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo investigate the onset of the measurability and the evolution of the subjective acuity in normal infant.MethodsTwo hundred and sixty - four normal infants were measured using the crowded HOTV recognition symbol system for subjective acuity and the closed-circuit operant preferential looking system(COPL) controlled by computer for grating acuity.The onset of measurability and the evolution of the subjective acuity of the normal infant sample were recorded and analyzed.ResultsIn the study part of the infants with 24-month old began to recognize the subjective vision symbols ( 26.32％ ).The measurability of subjective acuity of the infant group with 46 months old arrived to 100％.In the infants with 24-months old,the subjective acuity of the right eye was 4.86 ±0.05,left eye was 4.88 ± 0.08.In the infants with 46-months old the subjective acuity was 5.0 for both right and left eyes.According to Logistic regression analysis,the education background of the mother,and the instruction for infant showed the significant influencing factor.ConclusionThe study suggest that the crowded HOTV recognition symbol system controlled by computer provided a method to explore the onset of the subjective vision and the development of the infant.
