Percentile curves of stereacuity in a Spanish paediatric population

Objective: The main objective of this study was to obtain percentile curves of stereoacuity in arc seconds for a Spanish population aged between three and twelve years of age.Materials and methods: A descriptive, observational and transversal study was conducted, which included children aged between three and twelve years of age who did not present with any known ocular and/or systemic diseases. The convenience sampling method was used to select the sample from three schools and one hospital in the Community of Madrid. The Bueno-Matilla Vision Unit's random dot test was used to measure stereoacuity. A descriptive statistic was performed with the stereoacuity values that were obtained for the 5th, 10th, 25th, 50th, 75th, 90th and 95th percentiles.Results: The stereoacuity values of 1300 children were analysed. In the 50th percentile curve, it was determined that stereoacuity values close to 40 sec/arc were present from four years of age, and at four years and nine months, stereoacuity values close to 28 sec/arc were already being observed within said percentile, with values that were similar to those expected in the adult population. A progressive increase was observed, reaching 19 sec/arc before six years of age, with this stereoacuity value becoming more established in children from seven years of age.Conclusion: Although given the specific type of sampling that was performed it was not possible to generalise the results to the entire population, these percentile curves may aid paediatric professionals in their assessment of the development of this visual ability, which is indicative of the degree of development of binocular vision. (AU)

Visual acuity percentile curves in a Spanish paediatric population

Purpose: The main objective of this study is to obtain percentile curves of monocular and binocular visual acuity on a decimal scale in a Spanish population aged between 3 and 12 years old.Materials and method: Descriptive, observational and transversal study which included children between 3 and 12 years old without any known eye and/or systemic diseases. The selection of the sample was made by means of a convenience sampling method carried out in three schools and a hospital of the Community of Madrid. Far monocular and binocular visual acuity was measured using the Bueno Matilla vision unit on a decimal scale, both for monocular and binocular tests. The test used was the symmetrical letters test included with this unit. A descriptive statistic was performed and the visual acuity percentile values obtained were 5, 10, 25, 50, 75, 90 and 95. Results: The visual acuity of 1300 children was evaluated and analysed. In all the percentile curves obtained, an increase in age-related visual acuity has been observed, reaching a value close to the unit for the 50th percentile, around five years and three months of age, under monocular conditions and somewhat earlier in binocular conditions. Conclusion: Although the type of sampling performed does not allow a generalization to the entire population, these percentile curves may help the paediatric professional to decide the referral of the relevant child to the eyecare professional, so that certain conditions, like amblyopia or the early stages of school myopia may be early detected. (AU)

Percentile curves of stereacuity in a Spanish paediatric population.

OBJECTIVE: The main objective of this study was to obtain percentile curves of stereoacuity in arc seconds for a Spanish population aged between three and twelve years of age. MATERIALS AND METHODS: A descriptive, observational and transversal study was conducted, which included children aged between three and twelve years of age who did not present with any known ocular and/or systemic diseases. The convenience sampling method was used to select the sample from three schools and one hospital in the Community of Madrid. The Bueno-Matilla Vision Unit's random dot test was used to measure stereoacuity. A descriptive statistic was performed with the stereoacuity values that were obtained for the 5th, 10th, 25th, 50th, 75th, 90th and 95th percentiles. RESULTS: The stereoacuity values of 1300 children were analysed. In the 50th percentile curve, it was determined that stereoacuity values close to 40 sec/arc were present from four years of age, and at four years and nine months, stereoacuity values close to 28 sec/arc were already being observed within said percentile, with values that were similar to those expected in the adult population. A progressive increase was observed, reaching 19 sec/arc before six years of age, with this stereoacuity value becoming more established in children from seven years of age. CONCLUSION: Although given the specific type of sampling that was performed it was not possible to generalise the results to the entire population, these percentile curves may aid paediatric professionals in their assessment of the development of this visual ability, which is indicative of the degree of development of binocular vision.

Visual acuity percentile curves in a Spanish paediatric population.

PURPOSE: The main objective of this study is to obtain percentile curves of monocular and binocular visual acuity on a decimal scale in a Spanish population aged between 3 and 12 years old. MATERIALS AND METHOD: Descriptive, observational and transversal study which included children between 3 and 12 years old without any known eye and/or systemic diseases. The selection of the sample was made by means of a convenience sampling method carried out in three schools and a hospital of the Community of Madrid. Far monocular and binocular visual acuity was measured using the Bueno Matilla vision unit on a decimal scale, both for monocular and binocular tests. The test used was the symmetrical letters test included with this unit. A descriptive statistic was performed and the visual acuity percentile values obtained were 5, 10, 25, 50, 75, 90 and 95. RESULTS: The visual acuity of 1300 children was evaluated and analysed. In all the percentile curves obtained, an increase in age-related visual acuity has been observed, reaching a value close to the unit for the 50th percentile, around five years and three months of age, under monocular conditions and somewhat earlier in binocular conditions. CONCLUSION: Although the type of sampling performed does not allow a generalization to the entire population, these percentile curves may help the paediatric professional to decide the referral of the relevant child to the eyecare professional, so that certain conditions, like amblyopia or the early stages of school myopia may be early detected.