• Title/Summary/Keyword: 시교정

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LINGUAL ARCH APPLIANCE (임상치과 교정학 강좌)

  • Jo, Hui-Won
    • The Journal of the Korean dental association
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    • v.8 no.4
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    • pp.361-362
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    • 1970
  • LINGUAL ARCH APPLIANCE는 1908년 Mershon이 처음 창시한 교정장치로 band를 사용하는 교정장치중 가장 간단하면서도 여러가지 장점을 지니고 있다. 이 장치는 특히 성장발육기의 소아교정에 최적하여 치아의 기능을 제한하지 않으며 악골 및 치아의 자연적인 성장발육을 허용하고 자연적인 치아이동을 도모하게 한다. 또한 이 장치의 특징은 지속적인 교정치료보다는 간헐적인 치료를 한다는 사실이다.예를 들면 Angle씨 2 급부정교합 즉 상악전돌의 치료시는 상악에 Libial arch wire, 하악에 Lingual arch wire를 장착하고 여기에 악간고무를 이용하여 2급의 교합상태를 개선한후 수개월간 장치를 제거하여 치아의 자연적인 적응을 허용하고 다시 장치를 장착하여 치료를 계속하는 것이다.

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A Study on the Prescription of Size Lens for Myopic Aniseikonia (근시성 부등상시의 등상시 렌즈 처방에 관한 고찰)

  • Kwon, Young-Seok;Kim, Ki-Hong;Lee, Hyun-Mee;Chu, Byoung-Sun;Kwon, Yun-Kyung
    • Journal of Korean Ophthalmic Optics Society
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    • v.18 no.4
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    • pp.555-560
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    • 2013
  • Purpose: The aims of this study were to investigate the stereoacuity and subjective symptoms of aniseikonia with prescription of the size lens. Methods: Participants were myopic anisometropia patients with the binocular refraction difference between 1.75 D~3.50 D. Inclusion criteria of participants were no ocular pathology, no amblyopia, more than 1.0 of corrected visual acuity. With fully corrected spectacles and a correction with the size lens, Awaya aniseikonia test and Randot Stereo test were conducted respectively. In addition, subjective symptoms were also examined using questionnaire. Results: As the anisometropia increased, the aniseikonia increased. Under the anisometropia with same refractive correction was different for each individual. The prescription of size lens caused less aniseikonia than the general prescription of glasses. In addition, prescription of the size lens improved stereoacuity and relieved the symptoms of asthenopia. Conclusions: The prescription of size lens that can correct aniseikonia with prescription of glasses can improve stereoacuity and reduced asthenopia.

A Study of Research on Uncorrected Refractive Error in Elementary School Children in Mokpo (목포지역 초등학생들의 미교정안 현황에 관한 연구)

  • Kim, In Suk;Jang, Jung Un
    • Journal of Korean Ophthalmic Optics Society
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    • v.16 no.3
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    • pp.313-317
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    • 2011
  • Purpose: This study was to assess prevalence of refractive errors and uncorrected refractive errors in elementary school children in Mokpo and uncorrected refractive errors were to be used as the basic data. Methods: Vision tests were conducted on 400 subjects of 1st~6th grades at 3 elementary schools in Mokpo city, and subjective, objective refraction test were also performed to survey uncorrected refractive errors. Results: The prevalence of myopia was 256, 64% of total subjects, Hyperopia was 21, 5.3%, astigmatism was 19, 4.8%. The prevalence of uncorrected refractive errors were increased as higher grade and more oculus dexter higher than oculus sinister. Conclusions: Vision impairment which need an accurate vision correction for elementary school students requires the regular examination and actively correction in order to protect the elementary school students for basic welfare.

A Study on Ambiguity Resolving for Pen-based Proofreading of Web Documents (펜 기반 웹 문서 교정을 위한 모호성 문제 해결에 관한 연구)

  • Sohn, Won-Sung
    • Journal of The Korean Association of Information Education
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    • v.11 no.1
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    • pp.107-116
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    • 2007
  • To produce accurate editing results, the ambiguity of editing scopes related to marked correction signs should be solved. Proofreading the web document modifies the document structures, and the modified structures should be robustly valid for the defined DTD. This paper presents a pen-based proof-reading interface in the XML document. In the proposed interface, correction signs are free-drawn, and the editing scopes are recognized and revised based on the contexts of the document to minimize the ambiguity of the editing scopes. The proposed interface provides both implicit and explicit modification methods for document structures. As a result, the editing scopes processed in the proposed interface are more accurate, and the document structures are maintained valid for DTD after the editing.

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