• Journal of Korean Ophthalmic Optics Society
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• v.4 no.1
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• pp.57-61
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• 1999

This is a study of measurement of inter Reading Pupillary Distance (P.D.) in 729 old aged farmers (aged over 50). The average of Reading Pupillary Distance (P.D.) in man (58.93mm) is bigger than in woman (57.82mm), and the O.C. of Ready-made Reading Spectacles is 68.98mm.

• Journal of Korean Ophthalmic Optics Society
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• v.9 no.1
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• pp.125-134
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• 2004

By applying the test methods of "Protection Eyewear Standard (KS P 8147)", "Glasses Frame Standard (KS G 3306)" and "Lens Standard for Sunglasses (KS P 4404)", this study analyzed optical functions of sunglasses now being sold in a road shop (A shop), a fashion goods store (B shop), a shop of highway rest area (C shop) and an optical shop (D shop). When compared with sunglasses (UV transmittance rate 8.8%) of a road shop, UV Block effects of sunglasses (UV transmittance rate 0.7%) of an optical shop showed good results. In addition, the average surface resistance against abrasion for sunglasses which was sold at an optical shop was 1.4% that was much higher than that of sunglasses of a road shop(2.2%).

• Journal of Korean Ophthalmic Optics Society
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• v.2 no.1
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• pp.97-101
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• 1997

We studied the Malus's law for two and three polarizers experimentally. It was satisfied for two polarizers such as ${\phi}=cos^2{\theta}$, for three polarizers such as ${\Phi}=\frac{1}{4}sin^22{\theta}$.

• Journal of Korean Ophthalmic Optics Society
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• v.6 no.1
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• pp.1-11
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• 2001

In this study, the results were that the duty of optician was analysed with DACUM(Developing A Curriculum Method). Task/Skill Matrix was formed and selected the elements above 2.15 points with the job description. The job specification made out the job description and the preference survey for the optician with the job model. These elements made a draft of drawing up standard of the Optician National Licensing Examination by Job Analysis.

• Journal of the Korean Chemical Society
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• v.58 no.2
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• pp.221-226
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• 2014

• Journal of the Korean Chemical Society
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• v.53 no.3
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• pp.391-394
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• 2009

• Journal of Korean Ophthalmic Optics Society
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• v.15 no.1
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• pp.9-17
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• 2010

Purpose: We have studied the problems associated with increased number of ophthalmic optics students and its effects on the supply and demand of optician. Methods: We collected data from Education Statistics, a white paper of Minister for Health, Welfare and Family Affairs, academyinfo web site and University (College) web site. Results: We forecasted an estimate for supply and demand of optician using the entrance number of ophthalmic optics. Conclusions: The numbers of produced optician are in excessive supply. The excessive supply of optician can contribute towards worsening working conditions and lower job satisfaction of an optician. Therefore this can result infrequent turn over of jobs within the same field and migration into the different field of areas. To solve these problems, we will need to act with the manpower policy of government by gathering the voices of the related optician agencies. Then expansion of job domain, improvement of quality level, the improvement of the working conditions for optician can be accomplished by the unification of university system and reduction of entrance numbers for department of ophthalmic optics.

• Journal of Korean Ophthalmic Optics Society
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• v.2 no.1
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• pp.103-110
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• 1997

This work presents experimental results on the electrical properties of hydrogenated amorphous carbon films(a-C : H) prepared by PECVD. Conductance of a-C: H was measured as a function of temperatures in the range of 100 to 423K. We studied two a -C: H films: one was well explanied by the Mott's variable range hopping(VRH) rule. But the other sample did not follow it. The conduction data of second sample were well fitted to Shimakawa's multi-phonon hopping(MPH) model according to which conductivity is proportional to Tm with m= 15~17. But, in our samples, m was 10~12.

• Journal of Korean Ophthalmic Optics Society
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• v.10 no.2
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• pp.99-101
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• 2005

This review of the Korean eye anatomy suggests that there may be unsuspected links between anatomical characteristics of the eye and orbit, and optical performance.

• Journal of Korean Ophthalmic Optics Society
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• v.5 no.1
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• pp.155-157
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• 2000

A variable process of blur circle is calculated for a artificial hyperopia. The calculation is used to the value of Gullstrand's theoretical eye and a method of geometrical optics. The theoretical eye simplified a entrance pupil and the retina. Ophthalmic lens and eye changed a equivalent lens. Refractive power of a equivalent lens is converted to focal length within theoretical eye, and this is calculated about relation of a blur circle on the retina and ophthalmic lens.