웨이브프론트 방식을 이용한 라섹 수술 시 수술 전 다양한 굴절 검사의 정확도 비교

안지민,안현석,서경률,김응권,김태임,Ji Min Ahn,MD,Hyun Seok Ahn,MD,Kyoung Yul Seo,MD,PhD,Eung Kweon Kim,MD,PhD,Tae Im Kim,MD,PhD 대한안과학회 2010 대한안과학회지 Vol.51 No.9

Purpose: To predict the accuracy of preoperative refractive error measurement methods in wavefront-guided laser-assisted subepithelial keratectomy (LASEK) surgery and to formulate a nomogram for satisfactory surgical results. Methods: The medical records of 30 patients (57 eyes) who had undergone wavefront-guided LASEK were reviewed. The ideal surgical ablation amount was defined as the sum of the real surgical ablation amount and the remaining refractive errors. Comparison between the ideal surgical ablation amount and preoperative refractive errors was made using autorefraction, manifest refraction, cycloplegic refraction, postcycloplegic refraction, wavescan, and iTrace aberrometer measurements. Results: The refractive errors measured by the postcycloplegic refraction showed the closest relation with the ideal surgical amount, and the nomogram based on this refraction correlated statistically significantly with the ideal surgical ablation amount. The refractive error using the wavescan also showed more accurate refractive measurements than the autorefractor and iTrace aberrometer. Conclusions: Accurate manifest refraction immediately before surgery is the most important in determining the ablation amount. Additionally, the refractive errors measured with the wavescan, which is an aberrometer used for wavefront- guided LASEK, showed a minimal amount of errors. After reviewing the results, the nomogram based on these 2 methods can be concluded to possibly contribute to an increase in the accuracy of surgery. J Korean Ophthalmol Soc 2010;51(9):1196-1202

심층 서사의 계급적 욕망과 웃음 -<소설인규옥소선(掃雪因窺玉簫仙)>-

안지민 ( Ahn Ji-min ) 한국고소설학회 2023 古小說 硏究 Vol.56 No.-

In the < SoseolingyuOksoseon(掃雪因窺玉簫仙) >, the desire for the deep class is connoted. One is pursuing to become the father of the upper class by passing an examination, and another is intended to raise one’s own status from the lower class to the upper class. The two classes are distinguished in their aspects in the process of realizing their desires. The ‘Saeng(生)’ of the upper class, revealing his haphazardness and impulsiveness as soon as he gets out of his father’s protection, shows his extreme inability that be dependent on the lower class for everything in his life. On the other hand, ‘Jaran(紫鸞=玉簫仙)’, a clever secular woman, showing agility in fulfilling her desires by taking the lead in monitoring and managing both ‘Saeng(生)’s incompetence’ and life. They succeed in settling the existing order building complementary relationships in the contrasting aspects. In this article, under this recognition, the surface narrative of the text depicts a love story that overcomes the difference in social status, but the deep narrative is a story of a nobleman from the upper class struggling to secure his own independent status. Concurrently, it represents a story including a survival strategy for the lower class to elevate their status by squeezing through the gaps of the desire of one who belongs to the upper class. The most significant concept is ‘laughter’, which emerges in the process of unfolding the narrative by interwining both the surface narrative and the deep one. The laughter implied in the text is derived from the appearance of the male protagonist ‘Saeng’, the contrast between the upper and lower classes, and the self-reflective gaze of the nobleman. In this perspctive, not only can laughter be defined as one of the major aesthetic characteristics constituting the text, but it also is seen to have played a critical role in expressing society’s desire to overcome the closedness and rigidity of class by containing criticism and reflection. This is the critical point that < SoseolingyuOksoseon > included in 『Cheonyerok (天倪錄)』 is differentiated from the story of < Oksoseon > in other versions. This is also the reason why the text cannot be discussed confined only as a Romantic Jeon-gi Novel(愛情傳奇小說).

편의점 모바일 앱 사용에 관한 연구

안지민(Ahn Ji-min),이재인(Jaein Lee) 대한인간공학회 2019 대한인간공학회 학술대회논문집 Vol.2019 No.10

새마을 해외봉사 참여자의 경험에 관한 현상학적 연구

안지민(Ahn Ji min) 한국지방정부학회 2014 지방정부연구 Vol.18 No.2

새마을 해외봉사는 새마을정신에 바탕하여 지구촌사회에서 책임과 의무를 하는 적극적인 활동이다. 본 연구는 2013년 필리핀을 강타한 태풍 하이옌의 피해복구를 위해 파견된 새마을 해외봉사단(대학생, 결혼이주여성)을 대상으로 봉사참여자 개인이 가지는 경험의 의미와 본질을 질적 연구방법으로 탐색하였다. 해외봉사에 공동으로 참여한 원주민(대학생)과 이민자(결혼이주여성)를 대상으로 전 과정의 경험 의미와 본질을 참가자 유형별로 살펴본 것은 학문적으로 뿐만 아니라 새로운 사업유형의 효과성과 의의를 확인하는 것으로서도 그 의미가 크다. Giorgi(1975;1997)의 질적 연구방법을 통해 분석한 결과 해외봉사 참여 경험은 대학생 7개, 결혼이주여성 7개의 구성요소로 도출되었다. 원주민(대학생)과 이주민(결혼이주여성)이 함께하는 새마을 해외봉사는 봉사자 개인과 사회, 국가의 경계를 넘나드는 긍정적 상호작용임을 보여주었다. 원주민(대학생)은 수혜국에 대한 이해를 높이는 동시에 다문화 수용성을 제고하였고, 이주민(결혼이민여성)은 자신의 글로벌 역량을 발견하고 당당한 사회구성원으로서의 자신감을 향상시켰다. The Saemaul Movement's overseas volunteer service aims to fulfill responsibilities and obligations in the global community and is based on the spirit of the movement. I conducted qualitative research on the meaning and essence of the experiences of individual volunteers belonging to the Saemaul Volunteer Service Group(college students and women immigrants by marriage), which was organized to conduct relief operations for those affected by Typhoon Haiyan in the Philippines in 2013. Researching the meaning and essence of the whole process of volunteer operations-by participant type, local citizens (college students) and women immigrants-has academic importance and also helps in verifying the effectiveness and significance of a new project. Using the qualitative analysis methodology of Giorgi(1975;1997), experiences of overseas volunteer service groups were surveyed under seven categories for college students and seven categories for immigrant women. We found that Saemaul's overseas volunteer operations, for which local college students and women immigrants worked together, produced positive interactions, which surpassed those that occur at individual, societal, and national levels. Local citizens (college students) came to have a better understanding of the beneficiaries, and were thereby able to be more accommodating of multicultural diversity; women immigrants discovered their global capabilities, which increased their self-confidence as reliable, contributing members of society.

3축 가속도 센서를 이용한 특정 행동 인식

안지민(Ji-Min Ahn),정겨운(Gyeo-Wun Jeung),신동인(Dong-In Shin),박종범(Jeong-Beom Park) 대한전기학회 2017 정보 및 제어 심포지엄 논문집 Vol.2017 No.10

라섹 후 잠복조절량 증가로 인한 일시적인 근시 편위

김규아,안지민,정우석.Gyu Ah Kim. MD. Ji Min Ahn. MD. Woo Suk Chung. MD 대한안과학회 2014 대한안과학회지 Vol.55 No.1

Purpose: To investigate accommodation and progress of patients who showed myopia on manifest refraction in the early postoperative period after LASEK. Methods: Forty-one eyes were included in the present study which had undergone LASEK surgery from February to March 2012. Seven eyes showed myopia over -0.25 D on manifest refraction at 1 month postoperatively, but showed decreased amount of myopia at 2 months postoperatively and were classified as group 1. The other 34 eyes were classified as group 2. The differences between cycloplegic and manifest refraction (CRSE-MRSE) were defined as the amount of latent accommodation and compared between the 2 groups. Results: Amount of latent accommodation was 0.179 ± 0.426 D in group 1 (7 eyes), 0.265 ± 0.303 D in group 2 (34 eyes) preoperatively, 1.286 ± 0.664 D in group 1, 0.368 ± 0.536 D in group 2 at 1 month postoperatively, and 0.500 ± 0.520 D in group 1, and 0.489 ± 0.546 D in group 2 at 2 months postoperatively. The amount of latent accommodation in group 1 was significantly greater than that of group 2 one month postoperatively. As the amount of latent accommodation decreased, the amount of myopic shift decreased gradually over 2 months in group 1 after surgery. Conclusions: Transient myopic shift due to increased latent accommodation was observed in several patients one month postoperatively and the amount of myopic shift decreased with time without treatment. Thus, surgeons should consider cycloplegic refraction when planning treatment for patients with myopic regression. J Korean Ophthalmol Soc 2014;55(1):40-46

두 가지 장비를 이용한 각막 지형도 검사의 비교

이동민,안지민,서경률,김응권,김태임.Dong Min Lee. MD. Ji Min Ahn. MD. Kyoung Yul Seo. MD. PhD.Eung Kweon Kim. MD. PhD. Tae Im Kim. MD. PhD 대한안과학회 2012 대한안과학회지 Vol.53 No.11

Purpose: To compare the corneal measurements of Sirius and Pentacam in normal cornea and post-corneal refractive surgery patients. Methods: Subjects were tested by Pentacam (OCULUS, Wetzlar, Germany), and Sirius (CSO, Firenze, Italy). Measurements included central corneal thickness, thinnest corneal thickness, anterior chamber depth, anterior chamber volume, iridocorneal angle, corneal volume, pupil size, and curvature of cornea. Results: A total of 88 eyes from 44 patients were included in the present study. When comparing Sirius and Pentacam in the normal cornea, corneal thickness (p = 0.693), thinnest corneal thickness (p = 0.386), anterior chamber depth (p = 0.155), anterior chamber volume (p = 0.650), and pupil diameter (p = 0.124) did not differ significantly. Corneal curvature (p ˂ 0.001), corneal volume (p = 0.023), and iridocorneal angle (p ˂ 0.001) were statistically different. When comparing Sirius and Pentacam in post-corneal refractive surgery patients, corneal thickness (p = 0.056) did not differ significantly. There was a statistical difference in corneal curvature (p ˂ 0.001), thinnest corneal thickness (p = 0.019), anterior chamber depth (p ˂ 0.001), anterior chamber volume (p ˂ 0.001), iridocorneal angle (p ˂ 0.001), corneal volume (p ˂ 0.001), and pupil diameter (p ˂ 0.001). Conclusions: Anterior segment measurements with Pentacam and Sirius showed differences in post-corneal refractive surgery patients.

점안마취 하에서 시행하는 백내장수술에서 백내장 종류별 진행 정도와 수술단계별 통증의 비교

고재상,안지민,서경률,김응권,김태임.Jae Sang Ko. MD. Ji Min Ahn. MD. Kyoung Yul Seo. MD. PhD. Eung Kweon Kim. MD. PhD.Tae Im Kim. MD. PhD 대한안과학회 2013 대한안과학회지 Vol.54 No.3

Purpose: To investigate the relationship between maturity of a cataract and the pattern of pain during cataract surgery under topical anesthesia. Methods: This study comprised 105 eyes of 75 patients undergoing cataract surgery under topical anesthesia. The pain scale during each procedure was scored from 0 to 10 in numeric pattern and analyzed with the cataract maturation degree. Additionally, pain scores were compared between the first and the second eye in 14 consecutive cataract patients. Results: The average pain score during cataract surgery was 0.86 ± 0.55, and the average maximal pain experience score during surgery was 3.24 ± 1.51, which was generally tolerable. Phacoemulsification was marked as the most painful step among cataract surgery procedures (1.93 ± 1.64), followed by the removal of the surgical draping (1.31 ± 1.53) and the initial instillation of topical anesthetic (1.29 ± 1.28). Progression and cataract typing was not related to pain either during overall cataract surgery procedures or when separately analyzed during procedures. There was no significant difference between the pain scores reported in consecutive cataract surgeries. However, in subjective comparison of consecutive surgeries, more patients reported greater pain in the second operation. Conclusions: The pain score reported during cataract surgery procedures under topical anesthesia was within a generally tolerable range. Cataract progression does not appear to be related to pain during the operation. In consecutive surgeries, pain measured by a numerical scale and subjective pain experience showed different results.

원추각막 환자에서의 알코올을 이용한 각막 콜라겐 교차결합술 후 각막곡률의 변화

노시진,안지민,한경은,서경률,Si Jin Noh,MD,Ji Min Ahn,MD,Kyung Eun Han,MD,Kyoung Yul Seo,MD,PhD 대한안과학회 2012 대한안과학회지 Vol.53 No.11

Purpose: To evaluate the changes in corneal keratometry (K) readings after corneal collagen cross- linking (CXL) using 20% alcohol in primary keratoconus and keratectasia after refractive surgery. Methods: Twelve eyes of 10 patients with primary keratoconus and 3 eyes of 3 patients with keratectasia after refractive surgery were included in the present study. Best-corrected visual acuity (BCVA) and mean K, corneal astigmatism by corneal topography, and mean K, corneal astigmatism, and spherical equivalent (SE) by auto refractometer were evaluated at baseline, and 6 months postoperatively. Eight eyes of 7 patients were also evaluated 1 year postoperatively. Results: Mean BCVA improved from log MAR 0.66 ± 0.50 to log MAR 0.55 ± 0.58 (p = 0.100) at 6 month after CXL. In corneal topography, mean K significantly decreased from 50.04 ± 5.88 D to 49.18 ± 6.15 D (p = 0.019), and corneal astigmatism slightly decreased from 5.33 ± 4.47 D to 5.29 ± 4.88 D (p = 0.755) at 6 months after CXL. According to the auto refractometer, mean K significantly decreased from 48.53 ± 5.94 D to 47.95 ± 5.79 D (p = 0.038), corneal astigmatism significantly decreased from 3.95 ± 2.54 D to 3.52 ± 2.40 D (p = 0.010), and SE significantly decreased from -6.25 ± 3.45 D to -5.40 ± 2.91 D (p = 0.037) at 6 months after CXL. Significant mean K and corneal astigmatism decreases in topography were also observed at 1 year after CXL. Complications related to CXL were not observed. Conclusions: CXL using 20% alcohol appears to be a safe and promising treatment modality with less corneal stromal damage in progressive primary keratoconus and keratectasia after refractive surgery.

비구면 일체형 인공수정체 삽입 후 동공 크기가 시력에 미치는 영향

한진우,한경은,안지민,정세환,이형근,서경률,김응권,김태임,Jinu Han,Kyung Eun Han,Ji Min Ahn,Se Hwan Jeong,Hyung Keun Lee,Kyoung Yul Seo,Eung Kweon Kim,Tae Im Kim 대한안과학회 2012 대한안과학회지 Vol.53 No.11

Purpose: To evaluate the influence of pupil size on uncorrected visual acuity and spherical aberration of the TECNIS 1-piece intraocular lens (IOL). Methods: In this study 61 eyes were implanted with a TECNIS 1-piece IOL. Pupil size was checked by standard pupil card with cobalt blue light postoperatively. Best corrected visual acuity (BCVA) and uncorrected visual acuity (UCVA) were assessed postoperatively. Total spherical aberration and high-order aberration for mesopic pupil size zone were measured. Results: There were no significant differences of spherical equivalent, age, preoperative astigmatism, BCVA between two groups, but small pupil group revealed better UCVA (p = 0.02) and lower ocular aberration than large pupil group. Conclusions: After cataract surgery, pupil size greater than 5.0 mm increases total aberration. Thus, visual acuity with small pupil after aspheric TECNIS 1-piece IOL implantation show better clinical result on uncorrected visual acuity.