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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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Related in: MedlinePlus

Photographs of LVR (lateral and vertical version light-reflex) test measurements in dextroversion (A), levoversion (B), supraversion (C) and infraversion (D) of the right eye. Note corneal light reflex and scleral light reflex (arrow point indicates the exact position) in each eye.
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Figure 1: Photographs of LVR (lateral and vertical version light-reflex) test measurements in dextroversion (A), levoversion (B), supraversion (C) and infraversion (D) of the right eye. Note corneal light reflex and scleral light reflex (arrow point indicates the exact position) in each eye.

Mentions: The lateral and vertical version light-reflex test was performed for each eye. Subject's head was immobilized by an assistant and a penlight was directed exactly between the eyes of the subject from a distance of 25 cm. The examiner maintained the light at the center throughout the test and both the patient and examiner kept their heads in the same centered position with relation to each other. The subject then visually tracked a toy on the examiner's finger into maximum sustained dextroversion, levoversion, supraversion and infraversion in each eye. Subjects were asked to maximize their effort into extreme range of gaze and to maintain fixation during the examination. The light reflex on the sclera of the abducted or depressed eye and on the cornea of adducted or elevated eye was noted, measured and recorded as a Hirschberg-type measurement for corneal light reflex (e.g., reference points of 20° at the pupillary margin, 35° at the mid-iris position, and 45° at the corneoscleral limbus, as originally reported by Urist [1, 4]) and as millimeters onto the sclera for the scleral light reflex (1) (Fig. 1). For a sclera light reflex in the semilunar fold, either notes it as "SF" or recorded the number of millimeters from the limbus. To minimize the measurements error, three measurements were recorded at each version of each eye. If a value was greater than 5% different from the other readings at that version, an additional measurement was taken. The largest (maximum) value at each version was used for analysis. The same experienced examiner performed all measurements and verbal encouragement was used to ensure stability of the subject's head and maximum effort into extremes of gaze. The measurements of the right eye were selected for analysis in each case.


Changes of ocular version with aging in normal Korean population.

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

Photographs of LVR (lateral and vertical version light-reflex) test measurements in dextroversion (A), levoversion (B), supraversion (C) and infraversion (D) of the right eye. Note corneal light reflex and scleral light reflex (arrow point indicates the exact position) in each eye.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 1: Photographs of LVR (lateral and vertical version light-reflex) test measurements in dextroversion (A), levoversion (B), supraversion (C) and infraversion (D) of the right eye. Note corneal light reflex and scleral light reflex (arrow point indicates the exact position) in each eye.
Mentions: The lateral and vertical version light-reflex test was performed for each eye. Subject's head was immobilized by an assistant and a penlight was directed exactly between the eyes of the subject from a distance of 25 cm. The examiner maintained the light at the center throughout the test and both the patient and examiner kept their heads in the same centered position with relation to each other. The subject then visually tracked a toy on the examiner's finger into maximum sustained dextroversion, levoversion, supraversion and infraversion in each eye. Subjects were asked to maximize their effort into extreme range of gaze and to maintain fixation during the examination. The light reflex on the sclera of the abducted or depressed eye and on the cornea of adducted or elevated eye was noted, measured and recorded as a Hirschberg-type measurement for corneal light reflex (e.g., reference points of 20° at the pupillary margin, 35° at the mid-iris position, and 45° at the corneoscleral limbus, as originally reported by Urist [1, 4]) and as millimeters onto the sclera for the scleral light reflex (1) (Fig. 1). For a sclera light reflex in the semilunar fold, either notes it as "SF" or recorded the number of millimeters from the limbus. To minimize the measurements error, three measurements were recorded at each version of each eye. If a value was greater than 5% different from the other readings at that version, an additional measurement was taken. The largest (maximum) value at each version was used for analysis. The same experienced examiner performed all measurements and verbal encouragement was used to ensure stability of the subject's head and maximum effort into extremes of gaze. The measurements of the right eye were selected for analysis in each case.

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