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Changes of ocular version with aging in normal Korean population.

Kang NY - J. Korean Med. Sci. (2009)

Bottom Line: All versions were decreased with aging (P<0.001 for all).Levoversion had the largest decrease with aging compared with other versions (P<0.001, respectively) and infraversion had the least decrease with age than levoversion (P<0.001), supraversion (P<0.001).All maximal sustained versions were decreased with aging but the ranges of ocular movements in Koreans were different with Caucasians as version least affected and most affected by age was infraversion and levoversion in Koreans.

View Article: PubMed Central - PubMed

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

ABSTRACT
The purpose of this study is to estimate normative values of maximum versions in healthy Koreans and investigate age-associated changes in eye movement, using lateral and vertical version light-reflex (LVR) test. Two hundred forty normal healthy subjects whose corrected visual acuity was better than 20/50 in both eyes, from 4 to 79 yr old (30 subjects in each decade) were studied. Maximum sustained values of dextroversion, levoversion, supraversion, and infraversion in each eye were measured using LVR test. Changes of versions according to age were analyzed. Mean normal value of dextroversion, levoversion, supraversion, and infraversion in normal Koreans was 7.7 mm, 41.6 degrees, 33.9 degrees, and 7.7 mm respectively. Contrary to values of Caucasians, levoversion (adductive movement) was more excessive and infraversion (depression) was smaller in Koreans. All versions were decreased with aging (P<0.001 for all). Levoversion had the largest decrease with aging compared with other versions (P<0.001, respectively) and infraversion had the least decrease with age than levoversion (P<0.001), supraversion (P<0.001). All maximal sustained versions were decreased with aging but the ranges of ocular movements in Koreans were different with Caucasians as version least affected and most affected by age was infraversion and levoversion in Koreans. The study standardized normal maximal versions and aging changes of versions in Koreans.

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Calculated mean lateral and vertical version light-reflex (LVR) test measurements in each decade as a percentage relative to the mean values of the 3rd decade group of the right eye. Subjects were grouped according to decade of life. All four versions are decreased with aging (P<0.001, respectively by regression analysis). Levoversion is the most decreased with aging (P<0.001 for each version type) and infraversion is least affected compared to levoversion (P<0.001) and supraversion (P<0.001), but not significantly different from dextroversion (P=0.3036 by multiple comparison test). The values are mean±SEM.
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Figure 5: Calculated mean lateral and vertical version light-reflex (LVR) test measurements in each decade as a percentage relative to the mean values of the 3rd decade group of the right eye. Subjects were grouped according to decade of life. All four versions are decreased with aging (P<0.001, respectively by regression analysis). Levoversion is the most decreased with aging (P<0.001 for each version type) and infraversion is least affected compared to levoversion (P<0.001) and supraversion (P<0.001), but not significantly different from dextroversion (P=0.3036 by multiple comparison test). The values are mean±SEM.

Mentions: Fig. 5 plots the calculated mean LVR values in each decade group as a percentage of mean maximum LVR values. Levoversion (adductive movement) was the most decreased version (P<0.0001 for each version type), and infraversion (depressive movement) was the least affected compared to levoversion (P<0.0001) and supraversion (P=0.0002), but the decline was not significantly different from dextroversion (P=0.3036) by aging using multiple comparison test.


Changes of ocular version with aging in normal Korean population.

Kang NY - J. Korean Med. Sci. (2009)

Calculated mean lateral and vertical version light-reflex (LVR) test measurements in each decade as a percentage relative to the mean values of the 3rd decade group of the right eye. Subjects were grouped according to decade of life. All four versions are decreased with aging (P<0.001, respectively by regression analysis). Levoversion is the most decreased with aging (P<0.001 for each version type) and infraversion is least affected compared to levoversion (P<0.001) and supraversion (P<0.001), but not significantly different from dextroversion (P=0.3036 by multiple comparison test). The values are mean±SEM.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2719191&req=5

Figure 5: Calculated mean lateral and vertical version light-reflex (LVR) test measurements in each decade as a percentage relative to the mean values of the 3rd decade group of the right eye. Subjects were grouped according to decade of life. All four versions are decreased with aging (P<0.001, respectively by regression analysis). Levoversion is the most decreased with aging (P<0.001 for each version type) and infraversion is least affected compared to levoversion (P<0.001) and supraversion (P<0.001), but not significantly different from dextroversion (P=0.3036 by multiple comparison test). The values are mean±SEM.
Mentions: Fig. 5 plots the calculated mean LVR values in each decade group as a percentage of mean maximum LVR values. Levoversion (adductive movement) was the most decreased version (P<0.0001 for each version type), and infraversion (depressive movement) was the least affected compared to levoversion (P<0.0001) and supraversion (P=0.0002), but the decline was not significantly different from dextroversion (P=0.3036) by aging using multiple comparison test.

Bottom Line: All versions were decreased with aging (P<0.001 for all).Levoversion had the largest decrease with aging compared with other versions (P<0.001, respectively) and infraversion had the least decrease with age than levoversion (P<0.001), supraversion (P<0.001).All maximal sustained versions were decreased with aging but the ranges of ocular movements in Koreans were different with Caucasians as version least affected and most affected by age was infraversion and levoversion in Koreans.

View Article: PubMed Central - PubMed

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

ABSTRACT
The purpose of this study is to estimate normative values of maximum versions in healthy Koreans and investigate age-associated changes in eye movement, using lateral and vertical version light-reflex (LVR) test. Two hundred forty normal healthy subjects whose corrected visual acuity was better than 20/50 in both eyes, from 4 to 79 yr old (30 subjects in each decade) were studied. Maximum sustained values of dextroversion, levoversion, supraversion, and infraversion in each eye were measured using LVR test. Changes of versions according to age were analyzed. Mean normal value of dextroversion, levoversion, supraversion, and infraversion in normal Koreans was 7.7 mm, 41.6 degrees, 33.9 degrees, and 7.7 mm respectively. Contrary to values of Caucasians, levoversion (adductive movement) was more excessive and infraversion (depression) was smaller in Koreans. All versions were decreased with aging (P<0.001 for all). Levoversion had the largest decrease with aging compared with other versions (P<0.001, respectively) and infraversion had the least decrease with age than levoversion (P<0.001), supraversion (P<0.001). All maximal sustained versions were decreased with aging but the ranges of ocular movements in Koreans were different with Caucasians as version least affected and most affected by age was infraversion and levoversion in Koreans. The study standardized normal maximal versions and aging changes of versions in Koreans.

Show MeSH
Related in: MedlinePlus