• Journal of the Korea Convergence Society
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• v.11 no.8
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• pp.317-321
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• 2020

This study researched the correlation between myopic refractive errors and intraocular pressure. The study population comprised 39 adults(17 of males, 22 of females). We measured the intraocular pressure using a Non-Contact Tonometer(NCT) and the correlation between myopic refractive errors was analyzed by dividing into three groups: mild, moderate, high myopia. The gender of subjects showed no statistically difference between the intraocular pressure and refractive errors, but as the refractive errors increased, the intraocular pressure incereased, which showed a statistically significant difference. In addition, the higher intraocular pressure in moderate and high myopia than mild myopia can cause glaucoma, that can develop at a young age. it is need to sufficient recognition and understanding correlation between intraocular pressure and myopic refractive errors in the middle-aged high myopia.

• The Journal of Pediatrics of Korean Medicine
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• v.27 no.4
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• pp.99-107
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• 2013

Objectives The purpose of this study is to obtain knowledge and views on treatment of acupuncture and acupressure for myopia. Methods The key words such as 'myopia, acupuncture', 'myopia, acupressure', 'refractive errors, acupuncture', 'refractive errors, acupressure' are used for the research through PubMed. Total 13 studies among the searched 66 were analyzed, except duplicated studies and have little relation to myopia or acupuncture and acupressure. Results Total 13 studies were selected: RCT (5), NRCT (3), UCT (3), Review (2). RCT had two studies on treatment by stimulating auricular acupoints, one study on a treatment by stimulating auricular acupoints and meridian acupoints, one study on a treatment to stimulate auricular acupoints with medication, and one study on electroacupuncture. In NRCT, two studies were on treatment to stimulate auricular acupoints with medication and only one study was on analysis of effect according to intensity of acupuncture. UCT had two studies on acupuncture, and one study on treatment to stimulate auricular acupoints. In Review, there were one study on introduction of Chinese eye exercises, and one study on systematic review for effectiveness and safety of acupuncture. Conclusions The effect on treatment of acupuncture and acupressure for myopia had mostly positive results. However, still not many researches were done to conclude this found. Also, the design of the experiment should be more accurate with systematically designed experimental group and control group.

• Journal of the Korea Convergence Society
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• v.11 no.2
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• pp.147-154
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• 2020

This study is about the development of ICT-based wearable devices for vision recovery that can cause functional myopia improvement through accommodation training. Vision Training Device(OTUS) is a head mount type wearable device, which naturally stimulates the contraction and relaxation of the ciliary muscles of eye. Users can conduct customized vision training based on personal vision information stored through the device. In the experiment, the effects of improvement of the symptoms by the accommodation training were compared and analysed for the two groups (16 comparative group and 16 accommodation training group) after causing functional myopia. The result showed the functional myopia improved average 0.44D±0.35 (p<0.05) at the accommodation training group compared to the comparative group. This study proved the effectiveness of vision training device(OTUS) on functional myopia, but further clinical trials are judged necessary to prove the possibility of long-term control of the functional myopia.

• Journal of Korean Clinical Health Science
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• v.2 no.4
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• pp.239-246
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• 2014

Purpose. to describe the prevalence of refractive error according to aging in young children in South Korea. Methods : From July 2013 to June 2014, five hundred subjects( 250 male subjects, 250 female subjects; aged between 7 and 12 years) were performed in refraction test using the Auto-Refraction. Myopia, hyperopia, astigmatism, and anisometropia were defined as spherical equivalent(SE)${\leq}-0.50$ diopters, SE ${\geq}+2.00$ D, cylinder error ${\geq}0.75$ D and SE difference${\geq}1.00$ D between binocular eyes, respectively. Results. The refractive error by spherical equivalent among all subjects was myopia 80.41%, astigmatism 44.89%, emmetropia 18.27%, anisometropia 16.92%, and hyperopia 1.32%. The prevalence of myopia increased with age. but hyperopia was decrease. Myopia and astigmatism were much more common in male than females although the difference was not statically significant. Emmetropia and hyperopia were much more common in female than males although the difference was not statically significant. The prevalence of spherical equivalent was much common from -1.00 diopter to 0.99 diopter. On the other hand, the prevalence of myopia was much more than hyperopia. There was a statistical significance between 9 year and 10 year of female in the spherical equivalent power(p>0.05). In all another group of age, there was not a statistical significance as aging in spherical equivalent power(p>0.5). However, there was a statistical significance between male and female as age in the spherical equivalent power(P>0.01). Conclusions: Myopia was the most common refractive error in Korea young children, while hyperopia was decreased after 7 years. There was a statistical significance as age between male and female at spherical equivalent power(P> 0.01). these results suggested that the analysis of the refractive error as age at young children can give the useful diagnosis data for the correction of visual function.

• Journal of Korean Ophthalmic Optics Society
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• v.19 no.1
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• pp.121-133
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• 2014

Purpose: In this study, we analyzed the progression and prevalence of myopia according to age for the last five years. Methods: We have done a comparative analysis of the progression and prevalence of myopia with the Korean National Health and Nutrition Examination Survey document from 2008 to 2012. Results: According to classification of myopia by age group for the last five years, the prevalence of low myopia was 25.5% for 5-11ages group, 25.1% for 12-18ages, 27.3% for 19-29ages, 30.7% for 30-39ages, 29.6% for 40-49ages, 19.2% for 50-59ages, 11.8% for 60-69ages, and 20.2% for over 70ages respectively. The prevalence of moderate myopia was 21.7% for 5-11ages group, 43.6% for 12-18ages, 36.2% for 19-29ages, 30.0% for 30-39ages, 20.4% for 40-49ages, 9.9% for 50-59ages, 5.2% for 60-69ages, and 7.6% for over 70ages respectively. The prevalence of high myopia was 2.1% for 5-11ages group, 11.7% for 12-18ages, 11.5% for 19-29ages, 6.9% for 30-39ages, 5.6% for 40-49ages, 1.9% for 50-59ages, 1.5% for 60-69ages, and 1.0% for over 70ages respectively. Conclusions: We must recognize an importance to the increase of the progression and prevalence of myopia, so it is necessary to provide a social interest in prevention of deteriorating vision and eye health welfare.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.14 no.2
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• pp.253-261
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• 2001

Objectives This study was performed to evaluate the clinical effect of acupuncture on children's myopia. Methods Among the outpatients with myopia who visited to Department of Acupuncture & Moxibustion, National Medical Center from June 2000 to May 2001, we selected 50 cases that did not involve ,any other pathological condition of eyes and patient age was below 17, whose eyes including with glasses or naked examined by monoocular and biocular visual acuity test per each visit and followed up for 6 weeks. Results We investigated 29 female and 21 male patients. The most distribution of age was 12.26. First mean biocular visual acutity was $0.2{\pm}0.074$. Last mean biocular visual acuity after 6 weeks was $0.8{\pm}0.046(p<0.001). Improved cases on biocular test were 38 cases($76.00\%$). Conclusions These results suggest that the acupuncture therapy is effective treatment modality on children's myopia.

• Medical Lasers
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• v.10 no.4
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• pp.229-237
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• 2021

Background and Objectives To assess the effectiveness of overnight orthokeratology (OK) in myopia using a new contact lens design over a one-month wearing period. Materials and Methods Participants were required to have myopia between -3.00 and -7.50D and astigmatism ≤ 2.00 D to participate in the study. The participants underwent OK with the White OK lens^® (Interojo, Pyungtek, Korea), which has a 6-curve lens design. Participants were assessed at weeks 1, 2, and 4 using slit-lamp bio-microscopy, and tested for refraction, uncorrected distance visual acuity, and corneal topography. Success was defined as achieving a Logarithm of the Minimum Angle of Resolution (logMAR) ≤ 0.1. Results A total of 46 eligible subjects with a mean age of 23.11 ± 7.89 years were recruited. Baseline logMAR was 1.18 ± 0.30 and a consistent decrease in logMAR was observed from week 1 to week 4. The success rate was 95.35% at week 4. The mean sphere significantly decreased from a mean pre-fitting value of -4.58 ± 1.28 D to a mean value of -0.65 ± 0.69 D at week 4 (p < 0.0001). Statistically significant corneal flattening was detected during keratometry at week 4. Conclusion Overnight OK with the White OK lens is effective for the correction of moderate and high myopia with astigmatism over a one-month wearing period.

• Journal of Korean Ophthalmic Optics Society
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• v.7 no.1
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• pp.21-23
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• 2002

Compared visual acuity that is measured in a artificial myopia with the numerical calculation. Calculation included image's height as well as blur circle that is formed to retina. The blur circle calculated in geometrical optics model, and height of retinal image calculated by refractive power and visual acuity that is measured in a artificial myopia. Define this result as "blur ratio" about blur circle and height of retinal image, and investigated blur ratio relationship about visual acuity in a artificial myopia.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.9 no.1
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• pp.129-135
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• 1996

The author performed in 10 myopia patients under the age of 29 years, who visited to KOMC EENT from August 1995 to June 1996, who were diagnosed the MYOPIA, who wanted recoverery of visual acuity. The medical treatment run paralled Acupuncture-Tx with Herbal medicine. The Acupuncture points were mainly used GV20, G20, B2, TE23, G14, S1, LI4, TE5, SI3, LIV3, G41, B62. And, Herbal medicine was mainly treated GAMIGEONGJI-TANG, GAMIGEONGJIBOGAN-TANG. As the result of treatment, the mean of improvement was 0.32 in visual-acuity chart. Conclusively, the myopia were improved by acupuncture and Herbal medicine.

• Journal of Preventive Medicine and Public Health
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• v.44 no.1
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• pp.56-64
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• 2011

Objectives: The purpose of this study was to estimate the prevalence and correlated factors of high myopia in 19 year-old men in Southeast Korea. Methods: This retrospective study was based on the medical checkup data of conscription during 2005. The study subjects were 19 years old men in Busan, Ulsan and Gyeongsangnam-do. The health checkup data of the conscripts consisted of noncycloplegic autorefraction test, the biometric data and social factors. To analyze the social and biometric effects, we classified the biometric factors into 4 or 5 groups and the social factors into 3 groups. High myopia was defined as a spherical equivalent of under -6.0 diopter. Data analysis was performed using the chi square test for trends and multiple logistic regression analysis. The SAS(version 9.1) program was used for all the analyses. Results: The prevalence of high myopia was 12.39% (6256 / 50 508). The factors correlated with high myopia were the residence area (OR, 2.07; 95% CI, 1.77 to 2.4 for small city; OR, 2.01; 95% CI, 1.72 to 2.34 for metropolis; the reference group was rural area), academic achievement (OR, 1.43; 95% CI, 1.34 to 1.53 for students of 4-and 6-year-course university; the reference group was high school graduates & under) and blood pressure (OR, 1.54; 95% CI, 1.10 to 2.16 for hypertension; OR, 1.09; 95% CI, 1.02 to 1.17 for prehypertension; OR, 1.10; 95% CI, 1.01 to 1.20 for hypotension; the reference group was normal blood pressure). Conclusions: More than one tenth of the young men were high myopia as one of the risk factor for visual loss. Further studies on high myopia and its complications are needed to improve eye health in Southeast Korea.