유리체절제술 중 발생한 발살바현상 관련 맥락막상강출혈

임한웅,고병우,송유미,이병로,Han Woong Lim,Byung Woo Ko,Yumi Song,Byung Ro Lee 대한안과학회 2008 대한안과학회지 Vol.49 No.6

Purpose: To report a suprachoroidal hemorrhage by Valsalva maneuver during vitrectomy under general anesthesia. Case summary: A healthy 26-year-old man had vitrectomy under general anesthesia due to rhegmatogenous retinal detachment in his right eye. During scleral indentation and endolaser photocoagulation, he took a sudden and severe bucking reflex because the effect of general anesthesia was insufficient. After the bucking reflex, suprachoroidal hemorrhage occurred in his right eye. Immediate IOP elevation and hyperfluorocarbon tamponade was performed to remove the suprachoroidal hemorrhage and reattach the retina and choroid. The patient’s corrected visual acuity was 20/50 and slender crescent‐shaped choroidal rupture remained around the temporal area of the macula, unlike traumatic choroidal rupture. Following fluorescein angiography, staining was evident at the choroidal rupture site; no fluorescein leakage was evident. Conclusions: We report a case of acute suprachoroidal hemorrhage which we investigated by fundus examination and fluorescein angiography. J Korean Ophthalmol Soc 49(6):1022-1027, 2008

A Cadaveric Anatomical Study of the Levator Aponeurosis and Whitnall’s Ligament

임한웅,백두진,이윤정 대한안과학회 2009 Korean Journal of Ophthalmology Vol.23 No.3

Purpose: To identify the anatomy of the levator aponeurosis (LA) and Whitnall’s ligament (WL) in Korean subjects using cadavers. Methods: Orbital exenteration was performed in ten cadavers (20 eyeballs) that had no history of trauma near the eyeball. We observed characteristics of WL (tension, density, and shape) and the relationship between the superior rectus muscle (SR) and the levator palpebrae superioris. We measured the distance from both the eyelid margin and the upper border of the tarsal plate to the insertion of the LA medially, centrally, and laterally. Results: The WLs we observed showed several shapes. In 12 eyes, we saw clear, white fibrotic bands, while in four others, we found thin, less taut bands. In four eyes, we were unable to identify the precise shape of the band. The insertions of the LA showed nasal dehiscence in 13 eyes and parallel attachment in seven eyes. The distances from the eyelid margin to the insertion of the LA medially, centrally, and laterally were 8.31 ㎜, 5.57 ㎜, and 5.15 ㎜, respectively. The distances from the upper border of the tarsal plate to the insertion of the LA medially, centrally, and laterally were 2.75 ㎜, 4.82 ㎜, and 4.29 ㎜, respectively. Conclusions: This study examined the anatomy of WL and the LA in Korean subjects and may be helpful as a reference in levator muscle surgery.

Ocular Manifestations of Pediatric Systemic Disease.

임한웅,오세열 한양대학교 의과대학 2016 Hanyang Medical Reviews Vol.36 No.3

Pediatric diseases are important because diagnosis and care for these can be complex. Among them, specific diseases have been associated with ocular involvement. This review presents the ocular manifestations of various pediatric diseases relevant to the clinician. An array of ocular manifestations of hyperthyroidism, hypoparathyroidism, diabetes mellitus, porphyria, cystinosis, mucopolysaccharidosis, Wilson disease, juvenile idiopathic arthritis, systemic lupus erythematosus, Marfan syndrome, Weill-Marchesani syndrome are described. In this review we will review ocular manifestations of systemic pediatric diseases for comprehensive understanding of eye involvement. With this review, authors can recognize the ocular manifestations for diagnosis and management of pediatric systemic diseases.

레스토랑의 비대면 서비스 사용성이 브랜드 만족과 브랜드 충성도에 미치는 영향 : 시니어 소비자를 중심으로

임한웅,배인호 경성대학교 산업개발연구소 2022 산업혁신연구 Vol.38 No.4

본 연구는 코로나 장기화로 인해 레스토랑의 비대면 서비스가 급격하게 증가하고 있는 상황에서 비대면 서비스를 경험한 시니어 소비자를 대상으로 그들의 브랜드 만족도와 브랜드 충성도 간의 관계를 검증하고자 수행되었다. 최근 1년 이내에 이용해본 경험이 있는 만 55세 이상의 시니어소비자를 대상으로 연구를 수행하였으며, 온라인으로 배포된 300명중 불성실한 응답자 26명을 제외한 최종 274명의 응답자를 최종 연구분석 대상자로 선정하였다. 연구분석결과, 시니어소비자가 지각하는 레스토랑의 비대면서비스의 사용성과 브랜드만족 간의 영향관계를 검증한 결과, 사용용이성, 접근성, 학습성, 확장성 모두가 브랜드 만족도에 유의한 정(+)의 영향을 미치는 것으로 나타났다. 또한, 레스토랑 비대면서비스에 대한 시니어소비자가 인지하는 사용성과 브랜드 충성도 간 영향관계를 검증한 결과, 사용용이성을 제외한, 접근성, 학습성, 그리고 확장성이 브랜드 충성도에 유의한 정(+)의 영향을 미치는 것으로 나타났다. 마지막으로 브랜드 만족도와 브랜드 충성도 간의 영향관계 분석 결과, 브랜드 만족도는 브랜드 충성도에 유의한 정(+)의 영향을 미치는 것으로 나타났다. 이러한 연구결과를 토대로 인구의 고령화로 인해 시니어 소비자들이 중요한 소비고객으로 자리매김하고 있는 시점에서, 비대면 서비스 사용성이라는 요소들이 시니어 소비자들에게 어떻게 인지되고 브랜드의 만족과 충성에 어떠한 영향을 미치는지를 검증함으로써 레스토랑 시니어 소비자를 위한 다양한 마케팅적 시사점을 제안하였다.

외상성 앞방 출혈과 동반된 섬유주 파열에서 안압 변동

임한웅,고명규,Han Woong Lim,Myung Kyoo Ko 대한안과학회 2008 대한안과학회지 Vol.49 No.9

Purpose: To report the relationship between the extent of rupture of the trabecular meshwork and intraocular pressure changes in traumatic hyphema patients. Methods: Ninety-five trabecular meshwork rupture patients were selected from a group of traumatic hyphema patients. Identification and measurement of the rupture of the trabecular meshwork were performed by gonioscopy, and intraocular pressure was measured by Goldmann applanation tonometry until 3 months after the trauma. Results: There were statistically significant differences of IOP between the traumatic eyes and the contralateral eyes at day 2, 3, 5, and 1 month (p=0.000, 0.018, 0.001, 0.040, respectively). IOP was highest at the 2nd day post-trauma, and dropped by the 5th day, after which it rose slightly. The relationship between the extent of trabecular meshwork rupture and the difference of IOP was positive at the 2nd day post-trauma (r=0.259) and negative at the 6th day post-trauma (r=-0.296); these differences are statistically significant (p=0.020, p=0.041, respectively). Conclusions: A rupture of the trabecular meshwork can be measured using gonioscopy, and the change of IOP in a trabecular meshwork rupture increases as the extent of the rupture of the trabecular meshwork increases. J Korean Ophthalmol Soc 2008;49(9):1501-1506

여러 가지 트리암시놀론제재의 유리체강내 투명기름방울모양 잔존물 발생 양상의 비교

임한웅,고병우,송유미,박영숙,이병로,Han Woong Lim,M,D,Byung Woo Ko,M,D,Yumi Song,M,D,Young Sook Park,M,D,Byung Ro Lee,M,D 대한안과학회 2008 대한안과학회지 Vol.49 No.7

Purpose: To investigate the characteristics of the clear oil-drop residue observed in the vitreous cavity after intravitreal injection of different brands of triamcinolone acetonide (TA), and to compare this ingredient’s effects in those products. Methods: Intravitreal injections of four different brands of triamcinolone acetonide (4 mg/0.1 mL), which are commercially available in Korea, were given to 40 eyes for the treatment of macular edema due to a variety of causes from October 2005 through February 2006. Regular slit-lamp biomicroscopy of fundus had been performed periodically with digital image acquisition equipment after injection of TA for at least two months. We analyzed the characteristics of this residue and compared the number and size of this residue in each product. Results: Four TA products commercially available in Korea were used, with vehicles composed of preservatives and suspending agents. There were differences between products in respect to ingredients and content, as well as the characteristics of the intravitreal clear oil droplet-like residue. Conclusions: Each TA product has a variable frequency and variable amounts of clear oil droplet-like residue, which seems to be a component of the vehicle. This variation could generate differences in efficacy, side effects, and retaining duration. It should be verified whether commercial TA products are consistently safe and effective. J Korean Ophthalmol Soc 49(7):1087-1093, 2008

백내장수술 전 구후마취 직후 발생한 망막중심동맥과 중심정맥의 폐쇄 1예

임한웅,고병우,송유미,박영숙,이병로,Han Woong Lim,M,D,Byung Woo Ko,M,D,Yumi Song,M,D,Young Sook Park,M,D,Byung Ro Lee,M,D 대한안과학회 2008 대한안과학회지 Vol.49 No.6

Purpose: To report central retinal vein and artery occlusion after retrobulbar anesthesia for a cataract operation. Case summary: A 65-year-old woman was transferred to our facility 4 days after she had undergone cataract extraction with IOL implantation. She could count fingers and had a relative afferent papillary defect in her left eye. As seen upon fundus examination, dot-shaped, circular-shaped irregular, and partially linear-shaped retinal hemorrhages were evident. Fluorescein angiography revealed that branch arteries around the nasal and temporal areas were not filled, and that the filling of veins was delayed. After two weeks, the patient was only able to recognize hand motion, and her intraocular pressure was 10 mmHg. According to a fundus examination, the size and quantity of retinal hemorrhages increased, and a pale, macular edema was observed. Following fluorescein angiography, the filling defect of branch vessels on the nasal and temporal areas was still evident, and the blocked fluorescence of capillaries on the fundus was prominent. After two months, she could still only recognize hand motion, and her intraocular pressure had increased to 35 mmHg; we therefore diagnosed a neovascular glaucoma. Conclusions: A patient experienced a serious central retinal vessel occlusion after retrobulbar anesthesia for cataract extraction. Retrobulbar injections should therefore be administered with great caution to prevent this outcome. J Korean Ophthalmol Soc 49(6):1013-1017, 2008

특발성 망막전막에서 유리체절제술 전후 미세시야계를 이용한 구조와 기능의 상관관계 분석

서샘,임한웅,신용운,강민호,성민철,조희윤.Sam Seo. MD. Han Woong Lim. MD. Yong Un Shin. MD. Min Ho Kang. MD.Min Cheol Seong. MD. Hee Yoon Cho. MD 대한안과학회 2013 대한안과학회지 Vol.54 No.6

Purpose: To investigate the relationship between photoreceptor inner/outer segment (IS/OS) integrity and macular sensitivity after epiretinal membrane (ERM) surgery using spectral-domain optical coherence tomography combined with microperimetry. Methods: 20 eyes of 20 patients with idiopathic ERM who underwent pars plana vitrectomy for ERM removal were prospectively reviewed. The IS/OS defect diameter, BCVA, macular sensitivity, and fixation stability were measured using spectral-domain optical coherence tomography combined with microperimetry. The correlation of these factors was analyzed. Results: The macular sensitivity improved after successful ERM surgery (p < 0.001), but the IS/OS defect diameter has not improved. The preoperative and postoperative macular sensitivity were negatively correlated with preoperative IS/OS defect diameter (p = 0.035, p = 0.006). The fixation stability was not correlated with preoperative IS/OS defect diameter. Conclusions: Macular sensitivity showed significant correlation with IS/OS defect diameter. Macular sensitivity is vital functional parameter allows subjective quantification of the retinal function and reflects morphologic changes.

접안렌즈를 이용한 범망막광응고술 후 발생한 눈꺼풀처짐에 대한 전향적 연구

김유정,임한웅,강민호,성민철,조희윤,Yu Jeong Kim,Han Woong Lim,Min Ho Kang,Min Cheol Seong,Hee Yoon Cho 대한안과학회 2013 대한안과학회지 Vol.54 No.7

Purpose: To investigate the possibility of blepharoptosis as a complication after panretinal photocoagulation using ophthalmoscopic contact lens. Methods: We prospectively evaluated patients who were diagnosed with diabetic retinopathy and scheduled to be treated with panretinal photocoagulation. Margin reflex distance 1 (MRD1), levator function, palpebral fissure height and width, and tarsal plate height were measured at the day of photocoagulation and 3 months after treatment. Results: MRD1 was decreased in 8 eyes (25.8%), levator function was decreased in 5 eyes (16.1%), and palpebral fissure height was decreased in 6 eyes (19.4%). The decrement of MRD1 and palpebral fissure height after photocoagulation were significant (p = 0.008, p = 0.031, respectively). There was a significant negative correlation between MRD1 decrement and tarsal plate height (p = 0.045). Conclusions: We identified blepharoptosis after panretinal photocoagulation using contact ophthalmoscopic lens, which was related with low tarsal plate height.

광간섭단층촬영기로 구한 시신경 및 망막신경섬유층 측정치들에 영향을 미치는 요인

한정일,임한웅,송유미,엄기방,Jung-Il Han,M,D,Han-Woong Lim,M,D,Yoo-Mi Song,M,D,Ki Bang Uhm,M,D 대한안과학회 2007 대한안과학회지 Vol.48 No.8

Purpose: To determine the factors influence retinal nerve fiber layer (RNFL) and optic nerve head (ONH) parameters measured by Stratus optical coherence tomography (OCT). Methods: Topographic RNFL thickness and optic disc parameters of 129 healthy Korean subjects of aged 14 to 87 were measured using the fast retinal nerve fiber layer thickness and fast optic disk algorithms of Stratus OCT. One eye of each subject was randomly selected for statistical analysis. Using multiple linear regression, the effect of optic disc area, age, refractive error, and zone beta on each parameter was analyzed. Results: Large discs had large horizontal integrated rim width (HIRW), cup area, rim area, C/D area ratio, and vertical C/D ratio. The thickness of average, superior, inferior, and nasal quadrant RNFL increased significantly with an increase in optic disc area. Average and superior quadrant RNFL thickness, and HIRW decreased with age. Refractive error showed a correlation with the vertical integrated rim area, horizontal C/D ratio, and temporal quadrant RNFL thickness. Gender and zone beta had no statistically significant influence on ONH and RNFL parameters. Conclusions: This study shows that optic disc size affects most RNFL thickness and ONH parameters. Because of the relationships revealed in this study, optic disc area in addition to age should be considered when the Stratus OCT RNFL thickness and ONH parameters are interpreted.