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Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

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Changes of ocular version with aging in normal Korean population.

¹Department of Ophthalmology & Visual Science, Holy Family Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea. nyeokang@catholic.ac.kr

Journal of Korean Medical Science

|August 6, 2009

Summary

This study establishes normal eye movement ranges for Koreans and reveals that all versions decrease with age. Levoversion (adductive movement) showed the most significant age-related decline.

Keywords:

Aging Lateral and Vertical Version Light-reflex (LVR) Test Ocular Version

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Area of Science:

Ophthalmology
Neuroscience
Gerontology

Background:

Ocular motility is crucial for visual function.
Normative data for eye movements in diverse populations are essential for clinical diagnosis.
Age-related changes in ocular versions are not fully characterized in Korean populations.

Purpose of the Study:

To estimate normative values for maximum eye versions in healthy Koreans.
To investigate age-associated changes in ocular motility.
To compare Korean ocular version ranges with Caucasian data.

Main Methods:

Lateral and vertical version light-reflex (LVR) test used.
240 healthy Korean subjects aged 4–79 years studied (30 per decade).
Measured maximum sustained dextroversion, levoversion, supraversion, and infraversion.

Main Results:

Established mean normal values for Korean ocular versions.
Koreans exhibited greater levoversion and smaller infraversion compared to Caucasians.
All ocular versions significantly decreased with aging (P<0.001).
Levoversion showed the largest age-related decrease, while infraversion showed the least.

Conclusions:

The study provides standardized normative data for maximal eye versions in Koreans.
Significant age-related declines in all ocular versions were observed.
Ocular movement ranges in Koreans differ from Caucasians, with infraversion least and levoversion most affected by aging.