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      • KCI등재

        Transient Increase of Higher-Order Aberrations after Lateral Rectus Recession in Children

        서경률,이종복,홍사민,송원경,정승아 연세대학교의과대학 2011 Yonsei medical journal Vol.52 No.3

        The changes of higher-order aberrations (HOAs) after bilateral lateral rectus muscle recession were evaluated. Forty eyes of 20 children were enrolled and their wavefront information was assessed until postoperative 3 months. Even though the root mean square (RMS) of total aberration was not changed, the RMS of HOA was transiently increased at postoperative 1 week and returned to baseline level after 1 month. Among individual Zernike coefficient, secondary astigmatism, quadrafoil, secondary coma, secondary trefoil, and pentafoil showed similar tendency with the RMS of HOA. However, coma, trefoil, and spherical aberration were not changed. Regarding recession amount, it did not correlate with any Zernike coefficient. In summary, our data imply that the HOAs are transiently increased after lateral rectus recession surgery. These results are in collusion with previous reports that strabismus surgery induced transient corneal astigmatism.

      • KCI등재
      • KCI등재
      • KCI등재후보

        베체트병 환자에서 초음파 유화술을 이용한 백내장 수술의 결과

        김영욱,서경률,Young Wook Kim,Kyung Yul Seo 대한안과학회 2006 대한안과학회지 Vol.47 No.12

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.

        Purpose: To evaluate the outcomes and complications of cataract surgery, using phacoemulsification in patients with Behcet`s disease. Methods: Twenty eyes of fourteen patients with Behcet`s disease, who underwent extracapsular cataract extraction using phacoemulsification and intraocular lens implantation between July 2001 and March 2004, were included in this study. Their postoperative visual acuity and complications were reviewed. Results: Ocular attacks after cataract surgery occurred in 10 eyes (50%). Uveitis developed in 10 of 12 eyes (83.3%) that had a uveitis-free interval of less than six months. On the other hand, in eight eyes that lasted more than 12 months with no uveitis, no postoperative ocular attack was found (p<0.01, Chi-square test). The incidence and severity of uveitis did not appear to increase upon surgery. Visual acuity improved in 17 eyes (85%). However, after 1 year postoperatively, a statistically significant decrease in visual acuity was observed in the recurrent uveitis group (p=0.05, t-test). Conclusions: Cataract surgery, using phacoemulsification and intraocular lens implantation, is tolerable in patients with Behcet??s disease. The most predictive factor of ocular attacks and prognosis after cataract surgery was the `uveitis free` duration before surgery. A uveitis-free interval of more than 12 months in duration was predictive of the best prognosis.

      • KCI등재

        특발성 진성 수정체낭 분리 환자에서의 백내장 수술 1예

        김규아,서경률,안지민 대한안과학회 2014 대한안과학회지 Vol.55 No.5

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.

        Purpose: We present a case of uneventful cataract surgery in an idiopathic true exfoliation patient with areas of capsular delamination based on scanning electron microscope and transmission electron microscope results. Case summary: A 77-year-old male presented with gradual deterioration of vision over 1 year in duration. Slit lamp examination revealed bilateral nuclear sclerotic cataracts with ring-shaped fibrous membrane floating within the anterior chamber in the right eye. In addition, the patient was diagnosed with cataract and true exfoliation of the right eye. He underwent uneventful phacoemulsification and posterior chamber intraocular lens implantation by placing capsulorrhexis outside the delaminated capsule margin. At 6 months after cataract surgery, the patient showed favorable visual outcome with uncorrected vision of 20/20 and intraocular pressure of 18 mm Hg in the right eye. J Korean Ophthalmol Soc 2014;55(5):766-769

      • KCI등재

        비구면 인공수정체와 구면 인공수정체의 술 후 Nd:YAG 레이저 후낭절개술 시행률 비교

        전익현,서경률,김응권,김태임,Ikhyun Jun,MD,Kyoung Yul Seo,MD,PhD,Eung Kweon Kim,MD,PhD,Tae Im Kim,MD,PhD 대한안과학회 2011 대한안과학회지 Vol.52 No.4

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.

        Purpose: The purpose of the present study is to compare Nd:YAG capsulotomy rates between spherical and aspheric intraocular lenses. Methods: The present retrospective study enrolled patients who received cataract surgery by a single surgeon between March 1, 2006 and October 31, 2009. Patients included in the study were implanted with SA60AT spherical intraocular lenses (Alcon, Fort Worth, TX, USA, 66 eyes), SN60AT spherical intraocular lenses (Alcon, 48 eyes; a total of 114 eyes), or SN60WF aspheric intraocular lenses (Alcon, 187 eyes). The Nd:YAG capsulotomy rates were compared between the two groups 6 months after the operation. Ten patients who were implanted with a spherical intraocular lens in one eye and an aspheric intraocular lens in the contralateral eye were analyzed separately. Results: Nd:YAG capsulotomy was performed in 2 of 114 eyes (1.8%) in the spherical intraocular lens group and 7 of 187 eyes (3.2%) in the aspheric intraocular lens group; no significant difference was found (p = 0.359). Among the 10 patients who were implanted with 2 different intraocular lenses, Nd:YAG capsulotomy was performed in only 1 eye in the aspheric intraocular lens group; no significant difference was found (p = 0.500). Conclusions: The design of the intraocular lens, especially the shape of the posterior optic, does not influence the rate of Nd:YAG capsulotomy. J Korean Ophthalmol Soc 2011;52(4):414-419

      • KCI등재후보

        건성각결막염 환자에서 스테로이드 점안 후 눈물 신경성장인자의 변화

        정승아,이형근,서경률,홍순원,김현창,김응권,Seung Ah Chung,Hyung Keun Lee,Kyoung Yul Seo Soon Won Hong,Hyung Chang Kim,Eung Kweon Kim 대한안과학회 2006 대한안과학회지 Vol.47 No.11

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.

        Purpose: To compare nerve growth factor (NGF) levels in tears and on the ocular surface of normal controls with those of non-Sjogren type keratoconjunctivitis sicca (KCS) subjects, and investigate the effect of 0.1% prednisolone eye drops on NGF levels in KCS patients. Methods: Baseline tear NGF levels were measured in 41 KCS patients and 23 healthy control subjects using enzyme-linked immunosorbent assays (ELISA). KCS patients received 0.1% prednisolone drops in one eye, and 0.1% hyaluronic acid drops in the other eye, three times daily for 28 days. Impression cytology (IC) and immunostaining for NGF on conjunctival epithelium was performed for both groups. Results: KCS patients were found to have higher baseline tear NGF concentrations compared to age- and sex- matched healthy control subjects (65.9±14.5 vs. 122.1±45.3, p<0.0001). In KCS patients, prednisolone treatment for 28 days resulted in a decrease in tear NGF levels, symptom scores and IC scores, whereas hyaluronic acid treatment had no such effect (68.2±25.0 pg/μg vs. 108.0±43.4 pg/μg, p<0.0001 for tear NGF/TP ratio; 2.16±1.01 vs. 3.39±1.50, p=0.0014 for symptom scale; 1.05±0.67 vs. 1.61±0.86, p=0.0317 for IC). Measurements taken at both 14 and 28 days indicate that neither prednisolone nor hyaluronic acid treatment affected BUT or Schirmer values. Conclusions: KCS patients showed elevated levels of tear NGF, which were decreased by treatment with 0.1% prednisolone. These data suggest that the ocular surface NGF may play an important role in ocular surface inflammation processes associated with dry eyes.

      • KCI등재

        익상편 수술에서 변형된 결막소판술 후 재발

        박선영,한경은,서경률.Sun Young Park. MD. Kyung Eun Han. MD. Kyung Ryul Seo. MD 대한안과학회 2012 대한안과학회지 Vol.53 No.10

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.

        Purpose: To compare and analyze the clinical outcomes after the traditional mini-flap technique and a new modified mini-flap technique for pterygium surgery. Methods: This is a retrospective, clinical outcome study of 39 eyes that received the existing mini-flap technique from January, 2004 to August, 2005, and 142 eyes that received the modified mini-flap technique from September, 2008 to December, 2010. We analyzed the recurrence rate of each mini-flap technique and the difference between the group that experienced recurrence and the group that did not. We also analyzed the difference between the group that received the mini-flap technique and the group that received the modified mini-flap technique. Results: The recurrence rate of pterygium patients who received the mini-flap technique was 10.3% (4/39). The rate of those who received the modified mini-flap technique was 2.1% (3/142), which is statistically lower (p = 0.040). However, compared from the recurrence rate of 6.1% (3/49) that was reported in 2008, the recurrence rate of the modified mini-flap technique did not show any statistical significance (p = 0.165). From the comparison of demographic factors of the patients in each surgical technique group, in both recurred and not recurred group, the patient group in the modified mini-flap technique group whose pterygium was recurrd was the youngest (p < 0.001). Conclusions: The newly applied modified mini-flap technique is not only a safe method with low recurrence rate compared to the traditional mini-flap technique, but also a reliable surgical technique in both primary and recurred pterygium. J Korean Ophthalmol Soc 2012;53(10):1419-1424

      • KCI등재후보

        라식수술 후 재발된 근시에 있어 보강수술 방법에 따른 교정 효과의 비교

        최진영,김현창,서경률,김응권,이형근,Jin Young Choi,Hyun Chang Kim,Kyoung Yul Seo,Eung Kweon Kim,Hyung Keun Lee 대한안과학회 2006 대한안과학회지 Vol.47 No.3

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.

        Purpose: To evaluate refraction and visual outcome between the enhancement methods on regressed or undercorrected myopia after primary laser in situ keratomileusis (LASIK). Methods: This prospective comparative study comprised 114 eyes of 114 patients who had enhancement between March 2003 and March 2004. A single surgeon performed all surgeries. Patients were subdivided according to enhancement methods lifting flap group (Group Ⅰ), LASEK enhancement group (Group Ⅱ) and tPRK group (Group Ⅲ). Flap was lifted in 55 eyes and LASEK enhancement was performed in 23 eyes. tPRK was done in 36 eyes. Uncorrected visual acuity (UCVA), best-corrected visual acuity, refractive error was examined prior to, and 1 week and 1, 3, 6 months after enhancement. Results: The mean time between initial LASIK and enhancement were 6.67±2.49 months in Group Ⅰ, 7.86±5.23 months in Group Ⅱ and 6.08±2.38 months in Group Ⅲ. At POD 6 months, the mean postoperative UCVA were 0.96±0.14 (0.026±0.079 logMAR), 0.97±0.15 (0.016±0.078 logMAR) and 0.89±0.21 (0.079±0.196 logMAR) snellen equivalent respectively and this did not differ significantly (p=0.166). The mean spherical equivalents were -0.60±0.69D (diopter), -0.91±0.75D and -0.88±0.60D respectively at POD 6 months and this also did not differ significantly (p=0.172). Conclusions: All three enhancement methods were useful procedure for correcting residual refractive errors after the primary LASIK. They provided good UCVA, predictable results and few complications.

      • KCI등재

        다양한 안표면질환에 대한 0.05% 싸이클로스포린 점안제의 단기 효과

        변여주,김태임,서경률 대한안과학회 2008 대한안과학회지 Vol.49 No.3

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.

        `Purpose: To evaluate the efficacy of topical cyclosporine A 0.05% (Restasis) in the treatment of dry eye symptoms caused by various ocular surface inflammatory disorders. Methods: Thirty?three patients with ocular surface diseases, including 17 with Sj?gren syndrome, 8 with meibomian gland dysfunction (MGD), 4 with Thygeson’s keratitis, and 4 with atopic keratoconjunctivitis (AKC) were treated with Restasis twice a day for 3 months. During follow?up, the symptom severity assessment (burning, itching, foreign body sensation, blurring, photophobia, and pain), TBUT (tear break?up time), Schirmer score, frequencies of artificial tear use, onset of symptomatic relief, subjective satisfaction score, and side effects were evaluated. Results: In patients with Sj?gren syndrome, foreign body sensation, blurring, photophobia, and pain were reduced after treatment, and the mean Schirmer score, TBUT increased and frequencies of artificial tear use decreased significantly. In patients with MGD, photophobia was reduced after treatment, TBUT and artificial tear use improved after 2 months, and the Schirmer score increased at 3 months. In patient’s with Thygeson’s keratitis, foreign body sensation and photophobia reduced, and the Schirmer score was increased at 3 months. No significant changes in symptoms, Schirmer score, or TBUT were observed in patients with AKC. Of all subjects, 55% reported symptomatic relief between 3 and 5 weeks after treatment. The mean satisfaction score after treatment was the highest for patients with Sj?gren syndrome. Two subjects reported a temporary burning sensation, and one subject quit using Restasis because of bitter taste and a burning sensation. Conclusions: Treatment with Restasis appeared to be effective in treating dry eye symptoms in patients with Sj?gren syndrome. It was shown to be partially helpful in patients with MGD and Thygeson’s keratitis, while it showed no beneficial effect in patients with AKC.`

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