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Published on: July 19, 2012
Evolution of accommodative function and development of ocular movements in children
R Jiménez1, M D González, M A Pérez
1Departamento de Optica, Facultad de Ciencias, C/Campus Fuentenueva, s/n, 18071, Universidad de Granada, Granada, Spain. raimundo@ugr.es
Insights
This study tracked visual development in children aged 6-12. Key findings reveal continuous changes in accommodative amplitude and saccadic movements, with distinct age-related trends for visual functions.
Area of Science:
- Ophthalmology and Optometry
- Developmental Pediatrics
- Pediatric Vision Science
Background:
- Understanding the typical development of visual functions in children is crucial for identifying potential issues.
- Normative data for accommodative function and ocular motor development are essential for pediatric eye care.
- Previous research has not comprehensively detailed age-specific trends across multiple visual parameters in a large pediatric cohort.
Purpose of the Study:
- To evaluate the evolution of accommodative function and ocular motor development in a non-clinical pediatric population.
- To establish age-specific normative values for key visual parameters in children aged 6-12 years.
- To identify distinct developmental trends in accommodative amplitude, facility, response, and saccadic movements.
Main Methods:
- A cross-sectional study involving 1056 non-clinical subjects aged 6-12 years.
- Assessment of accommodative amplitude (modified dynamic retinoscopy) and saccadic movements (Developmental Eye Movement (DEM) test).
- Measurement of accommodative facility (+/-2.00 D flippers) and accommodative response (Monocular Estimation Model (MEM) retinoscopy).
Main Results:
- Accommodative amplitude and saccadic movement efficiency showed continuous improvement with age.
- Accommodative facility (monocular and binocular) demonstrated distinct developmental patterns, necessitating division into two age groups (6-7 and 8-12 years).
- Accommodative response (lag) and direct saccadic movement observation showed no significant age-related differences, establishing a single mean reference for the cohort.
Conclusions:
- Visual development follows distinct age-related trajectories, with continuous changes in amplitude and saccadic skills, and group-specific patterns for facility.
- Normative data were established for accommodative amplitude, facility, response, and saccadic movements in children aged 6-12 years.
- These findings provide valuable reference values for pediatric optometric assessments and the early detection of visual development deviations.
Abstract:
The evolution of the accommodative function and development of ocular movement are evaluated in a non-clinical paediatric population (1056 subjects) aged 6-12 years, providing means for each age in the optometric tests that evaluate the accommodative amplitude, accommodative facility, accommodative response (lag), and saccadic movements. A comparison of these values between ages (anova) established three distinct trends in the behaviour of these parameters. The accommodative amplitude, measured by modified dynamic retinoscopy, and the evaluation of the saccadic movements by the development of ocular movements [developmental eye movement (DEM)] test showed continuous change with age. The values for monocular and binocular accommodative facility, measured by +/-2.00 D flippers, indicated the need to divide the population into two age groups (6-7 and 8-12 years). Finally, the means of accommodative response, measured by monocular estimation model (MEM) retinoscopy, and the direct observation of saccadic movement revealed no significant differences between ages, establishing a single mean reference value for the age group studied.
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