Related Experiment Videos
[Measuring accommodation time with a laptop computer].
Hideto Sagara1, Masayoshi Kajita, Keiichiro Kato
1Department of Ophthalmology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima 960-1295, Japan.
Nippon Ganka Gakkai Zasshi
|August 5, 2003
Summary
This study introduces a simple system to measure accommodation time, finding it correlates with accommodative amplitude and can assess visual function. The minimum time to complete (MTC) is a reliable indicator of accommodation speed.
Area of Science:
- Ophthalmology and Vision Science
- Human Physiology
- Optometry
Context:
- Accurate measurement of visual accommodation is crucial for diagnosing and managing eye conditions.
- Existing methods for assessing dynamic visual focus lack reliability for everyday work scenarios.
- Developing a simple, accessible tool for measuring accommodation time is essential.
Purpose:
- To develop and validate a simple testing system for measuring accommodation time.
- To evaluate the minimum time to complete (MTC) visual tasks at near distances.
- To assess the correlation between accommodation time and accommodative amplitude.
Summary:
- A novel testing system using a 5-meter chart and laptop was developed to measure accommodation time in 177 healthy individuals.
- The minimum time to complete (MTC) visual tasks was recorded as participants shifted focus from distance to near.
- Results indicate MTC is influenced by age, binocular vs. monocular vision, and accommodative amplitude, with shorter times observed with complete correction.
Impact:
- The developed MTC test provides a reliable method for assessing accommodation time.
- Findings highlight the relationship between accommodative amplitude and visual focusing speed.
- This simple system can aid in clinical assessments of visual function and accommodation.