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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korean Ophthalmic Optics Society
Journal Basic Information
Journal DOI :
The Korean Ophthalmic Optics Society
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Volume & Issues
Volume 15, Issue 4 - Dec 2010
Volume 15, Issue 3 - Sep 2010
Volume 15, Issue 2 - Jun 2010
Volume 15, Issue 1 - Mar 2010
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Comparison of Noncycloplegic Autorefraction, Manifest Refraction and Cycloplegic Autorefraction in School-aged Children
Kim, Dae-Young ; Lee, Koon-Ja ; Baarg, Saang-Bai ; Kim, Hyojin ;
Journal of Korean Ophthalmic Optics Society, volume 15, issue 2, 2010, Pages 123~130
Purpose: The study was conducted to compare the values of auto-refraction, manifest refraction and cycloplegic refraction in school-aged children. Methods: One hundred five myopic school children ranged from 6 to 14 years old (210 eyes,
years old) were recruited and noncycloplegic auto-refraction (AR) and manifest refraction (MR) were conducted and then underwent cycloplegia and refractive status (CR) again with the auto-refractometer. Results: Refractive powers measured by AR, MR, and CR were highly correlated. However, spherical and cylindrical powers of the subjects measured by AR were measured higher negative power than in CR (p<0.001). From 210 eyes, the discrepancy rate in the spherical and cylindrical powers were 40 eyes (19%) and 19 eyes (9%) of the total subjects, respectively and the differences between noncycloplegic and cycloplegic refractions were higher with the spherical and cylindrical powers increasing. Conclusions: The use of the autorefractometer in children with negative spherical power without cycloplegia may overestimate the actual myopia that subjective refraction is the most important in prescription for the eyeglasses and regression equations would be used to prognose the cycloplegic refraction from the auto-refraction as the basic data for the subjective refraction.
A Study on the Use of Korean Traditional Folk Paintings for Eyewear Accessories Design
Jang, Jun-Young ; Choi, Byung Jin ; Lee, Kyoung Sook ;
Journal of Korean Ophthalmic Optics Society, volume 15, issue 2, 2010, Pages 131~136
Purpose: Evaluating the possibility of Korean traditional folk paintings in the development of eyewear accessories. Methods: Esthetic values with vivid colour and layout of Korean traditional folk painting was evaluated. Reevaluation of those values was applied into eyeglass cleaners and eyeglass case with modernized fashion. Those accessories had an advantage of suitable space to represent visually images of the paintings. Results: Currently, Korean traditional folk paintings receives attention as an international cultural contents. Therefore, it would be possible to enhance cultural consumption of the product whose image was changed with cultural image of the paintings. Conclusions: Utilization of esthetic values into eyeglass makes a positive effects of eyewear accessories, which can be resulted in an expanding international market of eyewear accessories.
Clinical Evaluation of Prism-stabilized Toric Soft Contact Lens Fit
Kim, Soo-Hyun ; Kim, Jai-Min ;
Journal of Korean Ophthalmic Optics Society, volume 15, issue 2, 2010, Pages 137~144
Purpose: This study was to evaluate the clinical performance of 1-Day disposable toric soft contact lenses (TSCL) and to compare the visual performance with glasses and TSCL. Methods: In a two-week investigation of 'prism ballast' designed TSCL, occular refractions in 15 (30 eyes) healthy subjects were within the range of -2.75 D TO -8.00 D spherical power and -0.75 DC to -2.25 DC cylinderical power (with-the-rule). Subjects were assessed the clinical performance (orientation, centration, movement, tightness, rotation recovery, symptoms) of TSCL and compared binocular vision and contrast sensitivity with corrected glasses and TSCL at initial and two-week follow-up visits. Results: The prism-ballast design TSCL achieved better orientation, rotation recovery and symptoms over 2 week period. There was no statistically significant difference between spectacles and TSCL with respect to measuring binocular vision and contrast sensitivity. Conclusions: The clinical performance was good with prism-ballast design toric soft contact lenses. Evaluation of binocular vision and contrast sensitivity did not show the differences between spectacles and TSCL correction. This study suggests that TSCL wearers can be achieved similar visual performance for spectacles wearers.
The Change in Corneal Eccentricity on the Correction of Refractive Error using Reverse Geometry Lens
Lee, Seok-Ju ; Park, Seong-Jong ; Chun, Young-Yun ;
Journal of Korean Ophthalmic Optics Society, volume 15, issue 2, 2010, Pages 145~150
Purpose: In this study we investigated the correlation between the effect of myopia correction and the change of corneal eccentricity using reverse geometry lens. Methods: The 23 students (46 eyes) continuously wearing reverse geometry lens during 3 months were divided into Group I and Group II by different parameter fitting methods of wearing Reverse Geometry Lens. We measured a corneal eccentricity for Group I and Group II at
positions from corneal apex before wearing reverse geometry lens, 1 week, 1 month, and 3 months after wearing reverse geometry lens. We also measured an uncorrected visual acuity, a spherical equivalent, and a corneal radius and analyzed the correlation between them and the change of corneal eccentricity using statistical significance test. Results: There were the statistical significances of a change of corneal eccentricity (p=0.03, t=-2.29) for Group I and Group II at 10 position from corneal apex in a week after wearing reverse geometry lens, but were not those (p>0.05) in 1 month, and 3 months after wearing reverse geometry lens. There were the statistical significances of correlation between the change of corneal eccentricity and a corrected visual acuity, and a corneal radius, respectively. Particularly, the high correlation between the change of corneal eccentricity and a corrected visual acuity (r=-0.36, p=0.00, t=6.5), and a spherical equivalent (r=-0.72, p=0.00, t=-70.5) for Group II in a week after wearing reverse geometry lens showed. Conclusions: We knew from these results that the high correlation between the effect of myopia correction and the change of corneal eccentricity in a week after wearing reverse geometry lens represented.
An Analysis of Optical Performance of the Finite Schematic Eye According to Iris Eccentricity and Visual Axis change
Kim, Bong-Hwan ; Han, Sun-Hee ;
Journal of Korean Ophthalmic Optics Society, volume 15, issue 2, 2010, Pages 151~154
Purpose: We investigated how the movement of iris and visual axis affects the finite schematic eye Methods: Using the schematic eye with the crystalline lens in the existing forms of the radial GRIN and the spherical GRIN, the iris centre was moved 0.5 mm in nasal direction and visual axis was tilted
in same direction, with the additional degree of 2.5 down to locate the focal point in fovea. This study analyzed performance change of the optical system, designing it same as the real eye. Results: The whole aberration distribution showed a considerable difference in performance in comparison with the real eye; the biggest difference shown at the central field of optical system. The spherical aberration showed the biggest difference, and a peripheral power error and field curvature leaned toward (+) direction in aberration distribution. Conclusions: When designing the schematic eye with the performance similar with that of the real eye by taking into consideration the iris centre and visual axis, the aberration at the center field of optical system in particular should be corrected. Spherical aberration which showed the biggest difference should be corrected in the first place. In addition, a peripheral power error and field curvature that leaned toward (+) direction should be moved toward (-) direction.
Head Posture-Induced Phoria Deviation
Ha, Eun-Mi ; Son, Jeong-Sik ; Moon, Byeong-Yeon ; Yu, Dong-Sik ;
Journal of Korean Ophthalmic Optics Society, volume 15, issue 2, 2010, Pages 155~160
Purpose: The purpose of this study was to evaluate how phoria variations would vary with head positions, as well as to review the need to differentiate prism placement over either eye in a relation to the imbalance of the extraocular muscle. Methods: This study was carried out with 44 males (88 eyes) and 16 females (32 eyes) aged between 20 and 30. For all subjects, testings were performed using cover test, subjective refraction, phoria and vergence test. To analyze phoria variations comparatively for the head tilt test and the face turn test, phoria deviation were measured using the von Graefe. Results: For the phoria variation related with head tilt and face turn, a significant difference was observed in the group judged to be abnormal on the horizontal phoria of Morgan' norm (p<0.05); especially in patients who needed near prescription of Sheard's criterion, a higher variation was observed (p<0.05). The abnormal group was composed of patients who needed distance prescription of Sheard's criterion and ones who did not need the prescription, all of whom showed phoria variations, but the mean value was less than the near. Conclusions: With regard to the head tilt and face turn related phoria level, the patients who needed near horizontal prism prescription of Sheard's criterion showed a remarkably higher variation. Altogether, it is deemed to check whether extraocular muscles are ill-balanced in both eyes previously to determine the prism power on phoria level to the end that each of prism powers may be accurately determined.
Development of An Optometric Questionnaire for the Elderly Suitable for Optical Shops in Korea
Noh, Young-Jin ; Kim, Dal-Young ;
Journal of Korean Ophthalmic Optics Society, volume 15, issue 2, 2010, Pages 161~167
Purpose: The aim of this study was to help the rapid and effective eye-tests of old patients by developing an optometric questionnaire for the elderly suitable for optical shops in Korea. Methods: We surveyed several previous studies about the age-related changes of the eye, and deduced 10 items which were appropriate for optometric eye-tests. Excluding the items that could be easily found in a routine eye-test and that was just physiological changes, we principally chose anomaly items which could be catched by simple oral questions. The questionnaire was mainly composed of clinically important items that were frequently observed. Results: To diagnose optometric symptoms related to eye-aging, we listed 15 questions on the questionnaire for the elderly. Each of the 15 questions was respectively about the decline in the amplitude of accommodation (no.1), anisometropia (no.2), xerophthalmia (no.3), muscae volitantes (no.4-5), dark adaptation (no.6) light and dark adaptation (no.7), contrast sensitivity (no.8), contrast sensitivity and anisometropia (no.9), contrast sensitivity and colour vision (no.10), the field of view (no.11), stereoscopic vision (no.12), colour vision (no.13), cataract (no.14), and presbyopia (no.15). Each question was easy to understand and related to the generally observed symptoms. Conclusions: Our optometric questionnaire for the elderly, which was developed by the procedure mentioned above, was expected to be a help for examining the aging eye and offer the basis of eye-tests of older patients in Korean optical shops.
One Year Follow-up for Successfully Treated Children with Accommodative Dysfunction
Shin, Hoy Sun ; Youk, Do Jin ; Sung, Duk Yong ; Park, Sang Chul ; Lee, Sun Haeng ;
Journal of Korean Ophthalmic Optics Society, volume 15, issue 2, 2010, Pages 169~174
Purpose: The purpose of this study is to evaluate the long-term stability of the improved symptoms and accommodative functions after completion of accommodative therapy. Methods: Seven children (mean age
years) who were successfully treated with a vision therapy program for either accommodative insufficiency or infacility were followed for 1 year. The visual symptoms of the subjects were measured by the College of Optometrists in Vision Development Quality of Life (COVD-QOL) checklist, and this was followed by measurement of the monocular and binocular accommodative facility with
D flipper lens. Results: The mean visual symptoms at the 1 year follow-up examination (
) showed a small increase, but there was no significant difference (p=0.446) from post-therapy (
). There was small regression in the monocular (left eye,
) and binocular (
) accommodative facility at the 1 year follow-up examination, but there were no significant different from the monocular (
, p=0.147) and binocular (
, p=0.066) accommodative facility measurements at post-therapy. Also, every subject met the normative values of
cpm for monocular accommodative facility and
cpm for binocular accommodative facility in the long-term. Conclusions: There was long-term maintenance of the improved visual symptoms and accommodative functions, and so it is clear that the positive therapeutic effects persist with accommodative therapy.
The Impact of Refractive Errors on Quality of Life in Elementary School Children
Kim, Hyojin ; Kim, Eun-Ji ; Kim, Jong-Eun ; Lee, Kyu-Byung ; Lee, Eun-Hee ; Park, Sang-Shin ; Park, Jee-Hyun ; Lee, Se-Eun ;
Journal of Korean Ophthalmic Optics Society, volume 15, issue 2, 2010, Pages 175~183
Purpose: This study investigated the impact of ametropia and myopia on health-related quality of life (QoL) measures in elementary schoolers. Methods: Elementary school children of 92 aged 12 to 13 were divided into emmetropia and myopia groups by spherical equivalent. Then myopia was classified into the low, moderate and high myopia groups. Vision-related QoL scores were determined using PedsQL 4.0 (Pediatric Quality of Life Inventory) with physical health (8 items), emotional functioning (4 items), social functioning (5 items) and school functioning (5 items). Results: The total QoL score in the myopia group appeared lower than that in the emmetropia group, however the difference was not statistically significant (p>0.05). When it comes to physical health (running or exercising) and social functioning (getting along with friends or being teased)-related questions, the QoL score in myopia was low compared with the emmetropia group (p<0.05). High myopia showed a low score in physical health items but there was no significant difference in overall QoL scores in comparison with other groups (p<0.05). Conclusions: Refractive errors does not have a great impact on the total health-related QoL in elementary school children but it causes discomfort in physical health and social functioning.
The Study on the Improvement of Function and Sensation Symptoms of Binocular Vision for Vision Training Methods
Lee, Chang-Seon ; Kim, Ki-Hong ;
Journal of Korean Ophthalmic Optics Society, volume 15, issue 2, 2010, Pages 185~193
Purpose: The purpose of this study was to investigated the effect of vision training methods on the visual function and sensation symptoms of patients with convergence insufficiency. Mehtods: The vision training observation group included 35 clients who had binocular vision disorders without opthalmic diseases or vertical phoria. They took the each vision training once a week for eight weeks and were investigated for the function and sensation symptoms changes of binocular vision. Results: According to the results, all vision training methods showed improvement of binocular vision function and sensation symptoms. For Worth 4 Dot test, Titmus test and red lenses observed the changes in fusion rate, all the training methods showed similar improvements. Conclusions: The study proved that vision training methods for patients with binocular vision was effective for the improvement of the phoria, function and sensation symptoms of these patients.
Relationship of Refractive and Anatomical Changes on Eyes after Alcohol Ingestion
Kim, Jung-Ouk ; Moon, Byeong-Yeon ; Cho, Hyun Gug ;
Journal of Korean Ophthalmic Optics Society, volume 15, issue 2, 2010, Pages 195~199
Purpose: This study was to investigate the relevance between refractive and anatomical changes temporarily on the eyes after alcohol ingestion. Methods: Eight subjects (16 eyes) which were
aged males drunk the alcohol of 0.42 g per kg of body weight within 30 minutes. Refractive errors, the radius of corneal curvature, corneal thickness, pupillary size, intraocular pressure, and the length of the ocular axis at 1 h, 4 h, and 24 h after alcohol ingestion were compared with them of non-alcoholic state. Results: At 1 h after alcohol ingestion, breath alcohol concentration was the highest (p<0.001), more negative spherical power was needed (p<0.05) for correction, pupillary diameter was decreased (p<0.05), intraocular pressure was decreased (p<0.001), and the length of the ocular axis was increased compared with each one of non-alcoholic state. At 4 h after alcohol ingestion, all anatomical changes were the same tendency as at 1 h after alcohol ingestion. But at 24 h after alcohol ingestion, both refractive changes and anatomical changes were not significant compared with them of non-alcoholic state. Conclusions: Temporary changes of refractive error after alcohol ingestion may be related with decrease of intraocular pressure and increase of the length of ocular axis.