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정병진,신동수,홍승표,이규원,Byung Jin Jeong,Dong Su Shin,Sung Pyo Hong,Kyoo Won Lee 대한안과학회 2006 대한안과학회지 Vol.47 No.8
Purpose: To evaluate the clinical efficacy of a procedure using a new incision line in cases of epiblepharon. Methods: This study comprises 199 eyes of 105 patients (56 males, 49 females) clinically diagnosed with epiblepharon. The mean period of follow-up was 4.42 months. After marking the punctal position, the medial limit of the incision line was determined so as not to exceed the medial canthus, and the lateral limit was determined so as not to touch the cilia. The lower incision line was a folded line of skin formed after pulling the upper skin of the medial canthal area or after a downward gaze of the patient. The upper incision line was parallel to the lid margin from the medial limit and met the lower incision line at the lateral limit. Results: Recurrence happened in three eyes, but only one of them underwent re-operation. The other 2 eyes showed weak touching not to need operation. There were no postoperative complications. Conclusions: This procedure with a newly designed incision line for cases of epiblepharon showed a low recurrence rate and good cosmetic results, with a reduced operation time.
고도근시에서 굴절교정레이저각막절제술 후 각막혼탁을 줄이기 위해 사용한 마이토마이신의 효과
정병진,김현호,박영정,이광자,이규원.Byung Jin Jeong. M.D.. Hyun Ho Kim. M.D.. Young Jeung Park. M.D.. Gwang Ja Lee. M.D.. Kyoo Won Lee. M.D. 대한안과학회 2006 대한안과학회지 Vol.47 No.5
Purpose: To evaluate the safety and results of the prophylactic use of 0.02% mitomycin C (MMC) to inhibit haze formation after excimer laser photorefractive keratectomy (PRK) for high myopia in eyes that were not good candidates for laser in situ keratomileusis (LASIK) because of inadequate corneal thickness. Methods: On thirty eyes with high myopia (-6.0 to -10.13 diopters), PRK with intraoperative topical 0.02% MMC application was performed. Visual acuity, refraction, keratometry, corneal haze, central corneal thickness, corneal endothelium, repair of corneal epithelium, and other complications were evaluated for 1 year. Results: No eyes showed any BCVA loss, and some even presented a BCVA increase, except in one case: one eye had lost a line 1 year after PRK. At 1 year after surgery, the spherical equivalent was within ±0.5 D of the desired refraction in 73.33% of the cases, and 86.67% were within ±1.0 D of the intended refraction. At 3 months after surgery, the mean corneal haze scale stabilized at about 0.22, and decreased further thereafter. Central corneal thickness increased steadily postoperatively, whereas endothelial density decreased significantly, however, the percentage of hexagonal cells and coefficient of variation in cell area showed no change. Epithelial regeneration was complete within 4 days, and there were no other complications. Conclusions: The prophylactic use of a 0.02% MMC applied intraoperatively after PRK produced lower haze rates and a better visual outcome. But, due to the decrease in endothelial cell density, the safety of MMC can be determined only after long-term observation.
선천성 코눈물관막힘에서 더듬자검사 시 코눈물관 길이의 지표
정병진,신동수,이규원,Byung Jin Jeong,Dong Su Shin,Kyoo Won Lee 대한안과학회 2006 대한안과학회지 Vol.47 No.9
Purpose: To differentiate complex obstruction from the nasal cavity floor when performing probing in congenital nasolacrimal obstruction. Methods: Twenty-five eyes of 23 patients with congenital nasolacrimal duct obstruction were treated by probing from January to December 2003. We measured the length between the medial canthus and nasal ala and between the punctum and nasal floor after positioning the probe in the nasal cavity and compared the two lengths. Results: There were 15 males and 10 females. Their mean age was 11.48±4.32 months. The mean length between the lower punctum and nasal floor was 3.28±0.34 cm, and the mean length between the medial canthus and nasal ala was 2.82±0.26 cm. The length between the punctum and nasal floor was longer than that between the medial canthus and nasal ala (p<0.01). There was a positive relationship between two lengths (r=0.805, p<0.01). Conclusions: Measuring the length between the medial canthus and nasal ala before probing in patients with congenital nasolacrimal obstruction is helpful to distinguish the nasal floor from complex nasolacrimal obstruction when a hard stop is encountered.
정병진,신동수,이규원.Byung Jin Jeong. M.D.. Dong Su Shin. M.D.. Kyoo Won Lee. M.D. 대한안과학회 2007 대한안과학회지 Vol.48 No.5
Purpose: To evaluate the effect of modified simple excision for epicanthal folds. Methods: Eight patients with the epicanthal folds were treated using a modified simple excision method from June to December 2005. After medial traction of the epicanthal fold to expose the medial canthus, parabola-shaped marking was done near mucocutaneous junction. Under local anesthesia, incision of skin, dissection of subcutaneous tissue and excision of subcutaneous fibrous tissue and orbicularis oculi muscle were done. After marking the medial canthus on the skin, a wedge-shaped excision of the extra skin was done. Fixation sutures to the medial canthal tendon and skin sutures were then performed. Results: Eight participants were evaluated (four males and four females) with a mean age of 16.71±8.34 years. The mean follow-up period was 42.86±5.80 days. After the operation, the skin scar was not visible due to its deep position, and no complication, such as damage to the lacrimal canaliculus or sac, was observed. Conclusions: Modified simple excision for epicanthal folds is an effective method that does not leave a visible scar.
정병진(Byung-Jin Jeong),김상기(Sang-Gi Kim),조은제(Emu-Je Cho),김일권(Il-Kwon Kim),길경석(Gyung-Suk Kil) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
The maintenance of the turnout is composed of signal field and track field on business the electrical and mechanical field on system. adjustment and maintenance carry forward through coordination with these fields. In the case of turnout equipment used in a first phase of Seoul-Busan high-speed train it is treated by classifying as mechanical adjustments and electrical adjustments. Mechanical adjustment is conducted with focus on fine adjustment to meet maintenance standards limits(1mm or less) about interval of basic rail and tongue rail about each part of track transition equipment. This refers to mechanical adjustments performed mainly with physical changes and movement characteristics between basic rail and tongue rail by considering the overall environment surrounding track side of section installed track transition equipment. However these series of maintenance are conducted in state that high-speed train is not in the process from 1 am to 4 am at night but common workers for maintenance are not familiar with the operation and checking about various situation and the workers are even insufficient. Maintenance training using mixed reality is conducted in the place of business we tried to overcome several problems of safety and time reduction through this training.
김현호,정병진,신동수,이규원,Hyun Ho Kim,Byung Jin Jeong,Dong Su Shin,Kyoo Won Lee 대한안과학회 2007 대한안과학회지 Vol.48 No.4
Purpose: To evaluate the results and complications of the punctal plug insertion through lacrimal fistula. Methods: Four patients diagnosed with congenital lacrimal fistula had a punctual plug inserted through the lacrimal fistula without anesthesia from January to May 2005. Results: Mean follow-up period was 6.8 months. In two pediatric patients whose mean age was 5.0 years, the fistula was not associated with nasolacrimal duct. In two adult patients, it was associated nasolacrimal duct obstruction, whose mean age was 49.0 years. In all cases epiphora improved. There was a puncal plug prolapse in one case and no other complications. Conclusions: Punctal plug insertion is considered a simple and useful technique for lacrimal fistula without congenital nasolacrimal obstruction in children especially whose parents refuse general anesthesia. Punctal plug insertion can be useful to reduce scarring in adult patients that receive endoscopic dacryocystorhinostomy with nasolacrimal obstruction.
콩다래끼 병소 내 스테로이드 국소 주사 시 스테로이드 농도에 따른 치료 효과 비교
김은주,유성,정병진,이규원,문홍재,Eun Joo Kim,Sung Yu,Byung Jin Jeong,Kyoo Won Lee,Hong Jae Mun 대한안과학회 2013 대한안과학회지 Vol.54 No.3
Purpose: To compare the efficacy of an intralesional steroid injection in the treatment of chalazion according to triamcinolone acetonide (TA) concentrations. Methods: A total of 108 patients with 120 chalazia received an intralesional injection of TA. Patients were divided into 3 groups according to the concentrations of TA: 5 mg/ml, 10 mg/ml, and 40 mg/ml. A regular follow-up was performed and the size of lesion and recurrence were evaluated. Results: Success was defined as a minimum of 80% decrease in size with no recurrence. The success rate was 78.1% in the 5 mg/ml group, 76.2% in the 10 mg/ml group, and 78.4% in the 40 mg/ml group. These results were not statistically significant (p = 0.999, Fisher’s exact test). Yellow deposits developed in 4 out of 37 lesions in the 40mg/ml group, and in 1 out of 42 lesions in the 10 mg/ml group. Skin depigmentation was observed in 1 case in the 5 mg/ml group. Conclusions: Intralesional TA injection is an effective treatment for chalazion. There is no significant difference in success rates according to the concentrations of TA. However, caution is advised in cases of high injection concentrations of TA to prevent yellow deposits.