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- W2365948615 abstract "Objective To investigate the characteristic of contour detection in anisometropic and ametropic amblyopes.Methods Sixty cases in Vision Science and Optometry Center of Guangxi were recruited in this study from January to October 2009,and divided equally into three groups which were anisometropic amblyopes [male 10 cases,female 10 cases,mean age(7.3±2.2)years old],ametropic amblyopes [male 15 cases,female 5 cases,mean age(6.7±1.6)years old],and control group [male 12 cases,female 8 cases,mean age(7.0±1.5)years old],respectively.A contour detection task defined by Gabor patches was used to exam the contour detection thresholds of the three groups.And age,best corrected visual acuity(BCVA),contour detection threshold,mean interocular difference of contour detection threshold,and the rate of contour detection deficits of three groups were analyzed by SPSS 13.0 software,respectively.Results Age:There was no statistical difference in ages among three groups(F=0.480,P=0.621).BCVA:BCVA in anisometropic amblyopic group,ametropic amblyopic group and control group were(0.275±0.237)LogMAR,(0.323±0.148)LogMAR and(0.003±0.042)LogMAR,respectively.There was statistical difference in BCVA among three groups(F=160.645,P=0.000).And no significant difference was showed between anisometropic amblyopes and ametropic amblyopes in BCVA(LSD,P0.05),but both of them showed lower in BCVA than control group(LSD,P0.01).Contour detection threshold(△ value):Contour detection threshold in anisometropic amblyopic group,ametropic amblyopic group and control group were 0.9±0.2,1.1±0.1 and 0.7±0.1.One way ANOVA showed significant differences among the three groups(F=81.344,P=0.000)and different from each other,as well(P0.01).Mean interocular contour detection threshold difference(△ value):Mean interocular contour detection threshold difference in anisometropic amblyopic group,ametropic amblyopic group and control group were 0.10±0.10,0.04±0.08 and 0.04±0.05.One way ANOVA showed statistic differences among the three groups(F=4.107,P=0.022),and no significant difference was showed between control and ametropic amblyopic group(LSD,P0.05),but both of them showed statistical difference from anisometropic amblyopes(LSD,P0.05).Rate of contour detection defect:Rate of contour detection defect in anisometropic amblyopic group,ametropic amblyopic group and control group were 50%(10/20),20%(4/20)and 35%(7/20).Chi-square analysis showed that there was no statistical difference in the rate of contour detection deficit among the three groups(Pearson χ2=3.956,P=0.138).Conclusion Contour detection abnormity and deficits are common in untreated children with anisometropic and ametropic amblyopia." @default.
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- W2365948615 date "2011-01-01" @default.
- W2365948615 modified "2023-09-24" @default.
- W2365948615 title "Investigation of contour detection threshold in children with amblyopia" @default.
- W2365948615 hasPublicationYear "2011" @default.
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