Variability of Vernier acuity measurements in untrained subjects of different ages

Brazilian Journal of Medical and Biological Research

C.m.m. Abbud¹  A.a.v. Cruz¹ 

[1] ,Universidade de São Paulo Faculdade de Medicina de Ribeirão Preto Departamento de Oftalmologia, Otorrinolaringologia e Cabeça e Pescoço

关键词: Vernier acuity;    Variability;    Age;   

DOI  :  10.1590/S0100-879X2002000200011

来源: SciELO

【 摘 要 】

The Vernier acuity of 50 normal untrained subjects (20 males and 30 females) was measured by the method of adjustment. Subjects were divided into five age ranges with 10 subjects in each age group: 5-10, 11-20, 21-30, 31-40, and 41-50 years. All subjects had normal visual acuity (20/20) and volunteered to participate in the experiment. Children were selected from a local school and adults recruited from the technical staff of the Department of Ophthalmology of the School of Medicine. Vernier acuity was higher in adults compared to children. Intraindividual variability was high and it was estimated that for most individuals of all age groups a range of 100 to 700 trials was necessary to obtain a mean with a precision of 10%. These results suggest that Vernier acuity variability is an obstacle to its use in clinical settings.

【 授权许可】

CC BY   
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