Related Experiment Videos
Relation among accommodative facility, lag, and amplitude in elementary school children.
American Journal of Optometry and Physiological Optics
|August 1, 1987
Summary
This study examined children's accommodative functions, finding significant deficits in accommodation amplitude, lag, and facility. Evaluating all three aspects is crucial for diagnosing and managing visual impairments in children.
Area of Science:
- Ophthalmology
- Pediatric Optometry
- Vision Science
Background:
- Normative data for accommodative lag, facility, and amplitude in children are often reported separately.
- Understanding the interrelationships between these accommodative parameters is essential for comprehensive pediatric eye care.
Purpose of the Study:
- To investigate the relationship among accommodative amplitude, accommodative lag, and accommodative flexibility in school-aged children.
- To determine the prevalence of deficits in individual and combined accommodative functions.
Main Methods:
- Screened approximately 200 children, excluding those with specific visual conditions or refractive errors.
- Analyzed data from 123 eligible children to assess accommodative amplitude, lag, and facility.
- Identified and quantified deficits relative to age-expected norms.
Main Results:
- 53% of children showed deficits in accommodative facility, 26% in accommodative lag, and 25% in accommodative amplitude.
- Significant percentages exhibited deficits in combinations of these functions: 16% in facility and lag, 18% in amplitude and lag, and 24% in facility and amplitude.
- Only 4% of children had deficits across all three measured accommodative functions.
Conclusions:
- Accommodative dysfunction in children often involves multiple parameters, not just a single deficit.
- Clinical evaluation of pediatric accommodative disorders must comprehensively assess accommodative amplitude, lag, and facility.
- Integrated assessment ensures accurate diagnosis and effective management of visual development issues.