Biomaterial Database

Studies on development of visual acuity in infants measured by the Teller Acuity Cards. 1995

Y Suzuki, and S Awaya

Department of Ophthalmology, Nagoya University School of Medicine, Japan.

In order to confirm the reproducibility of visual acuity measurements in infants and to elucidate the cause of the plateau and decrease in the developmental curve between the ages of 9 and 15 months, we have retrospectively studied visual acuity measured by the Teller Acuity Cards (TAC) in infants aged 2 to 28 months. The visual acuity measured by TAC was higher than that obtained by the conventional preferential looking (PL) method in infants until the age of 14 months. No statistically significant difference was observed between the first eye and the second (fellow) eye measurements. Although monocular visual acuity decreased in infants aged from 9 to 12 months, binocular visual acuity showed an increase in the same age group. The first binocular measurement was better than the last binocular measurement on the same day. Although the first binocular measurement showed an increase in infants aged from 9 to 15 months, the second binocular measurement decreased in the same age group. Our results suggest that all these phenomena mentioned above are likely to be due to the psychological or behavioral rejection to the examinations.

UI	MeSH Term	Description	Entries
D007223	Infant	A child between 1 and 23 months of age.	Infants
D002657	Child Development	The continuous sequential physiological and psychological maturing of an individual from birth up to but not including ADOLESCENCE.	Infant Development,Development, Child,Development, Infant
D002675	Child, Preschool	A child between the ages of 2 and 5.	Children, Preschool,Preschool Child,Preschool Children
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012189	Retrospective Studies	Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.	Retrospective Study,Studies, Retrospective,Study, Retrospective
D014787	Vision Tests	A series of tests used to assess various functions of the eyes.	Test, Vision,Tests, Vision,Vision Test
D014792	Visual Acuity	Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast.	Acuities, Visual,Acuity, Visual,Visual Acuities
D015348	Vision, Binocular	The blending of separate images seen by each eye into one composite image.	Binocular Vision
D015349	Vision, Monocular	Images seen by one eye.	Monocular Vision,Monovision