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Yujin Gim,Roo Min Jun,Kyung Eun Han 대한안과학회 2021 Korean Journal of Ophthalmology Vol.35 No.5
Purpose: To evaluate the compatibility of corneal curvature and astigmatism, and higher-order aberrations (HOAs) measured by the Scheimpflug camera Pentacam HR and the swept-source optical coherence tomography ANTERION. Methods: This prospective study included normal subjects with no ophthalmic history. Steep keratometry (K), flat K, astigmatism and its axis of the anterior and posterior surfaces, total corneal power, and HOAs using the two instruments were compared. To compare the mean values of the measurements, a paired t-test was used. Bland-Altman analysis was applied to assess the agreement between the two devices. Results: Fifty-three eyes of 53 subjects were evaluated. There were statistically significant differences for steep K, astigmatism, and vector J0, J45 in the anterior surface and total corneal power between the two devices (p < 0.05). There were also significant differences in the most of the keratometric values of the posterior corneal surface (p < 0.05) except J0 (p = 0.410). Both devices showed strong positive correlations in steep K, flat K, astigmatism (r > 0.81, p < 0.001) with wide ranges of a 95% limit of agreement. Vectoral components were significantly correlated (r > 0.78, p < 0.001) with narrow 95% limit of agreement, except J45 of the posterior surface (r = 0.39, p = 0.004). In the corneal HOAs, there were statistically significant differences in the vertical coma, horizontal trefoil, spherical aberration, and root mean square of each fifth- and sixth-order Zernike coefficient (p = 0.043, p = 0.041, p < 0.001, p < 0.001, and p < 0.001, respectively). Other HOAs showed moderate to strong positive correlations (r > 0.37, p < 0.05). Most HOAs, except for the horizontal trefoil, showed clinically acceptable agreements. The total root mean square of HOAs was not significantly different between the two devices (p = 0.122). Conclusions: Most of the keratometric values cannot be used interchangeably. However, the vectoral component of astigmatism showed clinically good agreement. Several HOAs have statistically significant differences; however, almost all HOAs showed acceptable agreements, except for the horizontal trefoil.
건강검진 안저검사에서 이상 소견을 보여 안과에 내원한 환자의 임상양상 분석
이승민(Seung Min Lee),문지영(Ji Young Moon),전루민(Roo Min Jun),최규룡(Kyu-Ryong Choi),김현진(Hyun Jin Kim) 대한검안학회 2021 Annals of optometry and contact lens Vol.20 No.1
Purpose: To analyze the actual diagnosis and clinical features of patients who visited the eye clinic due to abnormal findings on the fundus photograph taken for screening purposes at the health screening. Methods: From February 2014 to July 2019, the medical records of patients whose fundus photography were suspect to be abnormal in the mass screening test were analyzed. Results: The average age of the patients was 53.6 ± 12.0 years (range, 22-81 years), and the average period to visit the eye clinic after screening was 41.3 days. The most frequent findings were identified as glaucoma suspect (n = 235), followed by retinal lesion (n = 212), media opacity (n = 49), and others (n = 48). The most common abnormalities in retinal abnormalities were drusen (n = 49, 20.5%), epiretinal membrane (n = 42, 17.6%), vascular disease (n = 29, 12.1%) and macular degeneration (n = 24, 10%). Of the patients who were suspicious of glaucoma, 42 patients (16.8%) were diagnosed as glaucoma after thorough ophthalmic examination. Among the patients with media opacity, 43 patients (78.2%) were diagnosed with cataract. Of the 544 patients, 450 patients (82.7%) were in condition requiring treatment or periodic ophthalmic examination. Conclusions: For rapid diagnosis and treatment, taking fundus photography at health screening is highly recommended. We found that detailed ophthalmic examination would be helpful for patients who visited the ophthalmology clinic with fundus abnormalities after health screening.
고도 근시에서 부분 결합 간섭계를 이용한 인공수정체 도수 계측의 정확성
전루민,강수연,김병엽,Roo Min Jun,Soo Yeon Kang,Byoung Yeop Kim 대한안과학회 2008 대한안과학회지 Vol.49 No.11
Purpose: To investigate the accuracy of biometry and intraocular lens (IOL) power calculation using partial coherence interferometry (IOL Master®) in highly myopic patients with axial lengths of 26 mm or greater. Methods: Patients with axial lengths equal to or greater than 26 mm who had undergone cataract surgery were enrolled. IOL power was calculated using IOL Master and/or applanation ultrasonography with the SRK/T formula. Twenty-seven eyes using both IOL Master and applanation ultrasonography were included in a paired group, and forty-eight eyes using the IOL Master only and twenty-five eyes using applanation ultrasonography only were included in unpaired groups. The differences between the predicted refraction and the actual refraction were compared and analyzed. Results: In the paired study, the axial lengths in patients using IOL Master (29.14±2.32 mm) were significantly longer than those of patients using applanation ultrasonography (28.57±2.23 mm) (p<0.05). The mean absolute error (MAE) of the IOL Master and applanation ultrasonography groups were 0.62±0.58D and 0.87±0.49D, respectively (p>0.05). In the unpaired study, the MAEs of the IOL Master and applanation ultrasonography groups were 0.61±0.61D and 0.65±0.63D, respectively. Conclusions: In eyes with axial lengths of 26.0 mm or greater, the accuracy of IOL power calculation with IOL Master using the SRK/T formula was comparable to that with applanation ultrasonography. J Korean Ophthalmol Soc 2008;49(11):1746-1751
김성언,전루민,이수영,최규룡,Seong-Eon Kim,Roo-Min Jun,Soo-Young Lee,Kyu-Ryong Choi 대한안과학회 2005 대한안과학회지 Vol.46 No.5
Purpose: To reconstruct a cultured conjunctival equivalent that closely resembles normal conjunctival epithelium in three-dimensional culture systems. Methods: Human conjunctival epithelial cells were cultured on dead de-epidermized dermis in the air-exposed state. After 2 weeks of culture, the sections were stained with hematoxylin and eosin. Immunohistochemical and electron microscopic studies were performed. The results were compared with those of normal conjunctiva and cultured eyelid skin equivalent. Results: In the cultured conjunctival equivalent, nonkeratinizing stratified epithelium was formed similarly to normal conjunctival epithelium. Keratin 13 was expressed, but not keratin 10, in the cultured conjunctival equivalent, similarly to normal conjunctival epithelium. However, in the cultured eyelid skin equivalent, keratinizing stratified epithelium was formed. In addition, keratin 10 was expressed, but not keratin 13, contrary to those of the cultured conjunctival equivalent. In the cultured conjunctival equivalent, ultrastructurally, keratin intermediate filaments and desmosomes were found. In addition, microvilli were seen in the uppermost epithelial cells. Conclusions: These findings demonstrate that the cultured conjunctival equivalent resembles normal conjunctival epithelium morphologically, biochemically and ultrastructurally, thereby suggesting that the cultured conjunctival equivalent may have a great potential in the study of conjunctival epithelium.
Medical Litigations Associated with Cataract Surgery in Korea
Kwak, Ji Yoon,Choi, Kyu-Ryong,Jun, Roo Min,Han, Kyung Eun KOREAN ACADEMY OF MEDICAL SCIENCE 2018 JOURNAL OF KOREAN MEDICAL SCIENCE Vol.33 No.27
<P><B>Background</B></P><P>To analyze the results of court rulings about medical litigations related to cataract surgery in Korea.</P><P><B>Methods</B></P><P>We collected 50 anonymized judgements regarding cataract surgery between 2000 and 2016 and analyzed the reasons for the medical litigations, the court rulings, the reasons for compensation, and the amount claimed and finally awarded.</P><P><B>Results</B></P><P>Forty-eight litigations (96%) resulted from errors in treatment, and the reasons were as follows: endophthalmitis, dissatisfaction of visual outcome or ocular discomfort, bullous keratopathy or corneal opacity, retinal detachment, glaucoma or vitreous hemorrhage due to the progression of an underlying diabetic retinopathy, and others in order. Two litigations (4%) arose due to errors in diagnosis. Among the 50 final cases, 21 litigations (42%) were decided in favor of the plaintiff, and 29 litigations (58%) were decided against the plaintiff and dismissed. Ten cases awarded damages to the plaintiffs because of a violation of duty of care, and 11 cases awarded damages due to a violation of informed consent. When comparing cases with errors in diagnosis to cases with errors in treatment, there was no significant difference in the relative risk of a defendant's verdict (<I>P</I> = 0.503). The total amount of awarded damages was KRW 439,124,496 (USD 399,204), and the average amount was KRW 20,910,690 (USD 19,010).</P><P><B>Conclusion</B></P><P>Nearly half of the cases were decided in favor of the plaintiff due to the violation of informed consent. This study's results will be helpful in understanding the results of medical litigations regarding cataract surgery and reducing future lawsuits.</P>