2.Implantable Contact Lens to Correct High Myopia(Clinical Study with 24 Months Follow-up).
Sang Yeop LEE ; Hee Jong CHEON ; Tae Min BAEK ; Kyung Hun LEE
Journal of the Korean Ophthalmological Society 2000;41(7):1515-1522
A ICL TM(STAAR Collamer Posterior chamber Implantable Contact Lens) lents ranging from -11D to -21.3D. And then we investigated the visualwas implanted in 12 eyes of 7 patients with preoperative spherical equivalents ranging from -11 D to -21.3 D. And then we investigated the visual acuity, mean endothelial cell loss, change of refractive error and postoperative complications.Average follow-up was 28.1 months. In the immediate postoperative days, all eyes had a significant increase in uncorrected visual acuity and the best corrected visual acuity was improved in 7 eyes(58.3%). Mean percent difference between preoperative and postoperative endothelial cell count was 3.22+/-0.05% . The mean preoperative spherical equivalent refraction was -15.65+/-2.78 D. At a mean follow-up of 1 month, mean spherical equivalent refraction was -1.67+/-0.72D, at a 6months, 12 months, 24 months, mean spherical equivalent refraction was each -1.56+/-0.72D, -1.63+/-0.68D, -1.73+/-0.76D. During follow-up days one eye developed an faint anterior subcapsular cataract but the patient remained symptom free. Other reported complication was transient increased intraocular pressure. Although the follow-up in our study was limited cases(12 eyes), from our experience, the posterior chamber implantable contact lens was efficacious and safe in the correction of high myopic refraction errors.
Cataract
;
Endothelial Cells
;
Follow-Up Studies
;
Humans
;
Intraocular Pressure
;
Lenses, Intraocular*
;
Refractive Errors
;
Refractive Surgical Procedures
;
Visual Acuity
3.Volar Dislocation of the Distal Radioulnar Joint Blocked by Displaced Dorsal Barton Fracture.
Jong Hun BAEK ; Jae Hoon LEE ; Duke Whan CHUNG ; Young Jun KIM
Journal of the Korean Society for Surgery of the Hand 2016;21(4):225-229
Distal radioulnar dislocation is commonly associated with radius fracture. Most common dislocation pattern is the dorsal dislocation. We present the unique case of volar dislocation of the distal radioulnar joint blocked by displaced dorsal Barton fracture of distal radius and discuss the injury mechanism and anatomic lesions.
Dislocations*
;
Joints*
;
Radius
;
Radius Fractures
4.Clinical Significance of T2 Sagittal Image and the Flow Void of Basilar Artery in Pontine Infarction.
Hye Seung LEE ; Byung Chul LEE ; Sung Hee WHANG ; Ki Hun BAEK ; Hyung Chul KIM ; Hong Ki SONG
Journal of the Korean Neurological Association 1999;17(2):195-200
BACKGROUND: Pontine infarction extending to the basal surface has been reported to possess different characteristics from deep pontine infarction without extending to the basal surface. METHODS AND RESULTS: We studied 54 patients ; 30 patients with pontine infarction extending to the basal surface (group SE) and 24 patients with deep pontine infarction without extension (group DL) based on the site of the infarcts on precontrast sagittal T2WI. We assessed angiographic findings(MRA, 54; DSA, 31), risk factors, clinical features and the effectiveness of the intraluminal signal changes on spin-echo MRI in the diagnosis of occlusion or stenosis of the basilar artery. The incidence of basilar artery stenosis or occlusion in MRA or DSA in group SE(60%) was significantly more frequent than group DL(12.5%), whereas the incidence of vertebral artery stenosis or occlusion was not different between two groups. A noteworthy finding was that five patients (17%) of the group SE had not been extended to the basal surface on axial T2WI. The risk factors were similarly distributed between the two groups. The effectiveness of abnormal signal void of axial MRI was poor in the diagnosis of basilar artery occlusion or stenosis. CONCLUSIONS: Our results suggest that the two types of pontine infarction may be caused by different arterial pathology. Although the presence of abnormal flow void on MRI cannot predict the stenosis or occlusion of basilar artery, sagittal T2WI and angiographic study help to evaluate the patients with pontine infarction.
Basilar Artery*
;
Constriction, Pathologic
;
Diagnosis
;
Humans
;
Incidence
;
Infarction*
;
Magnetic Resonance Imaging
;
Pathology
;
Risk Factors
;
Vertebrobasilar Insufficiency
5.Effects of Basic Hospital Infection Control Methods on the Isolation Rate of Methicillin: Resistant Staphylococcus aureus.
Eunju HEO ; Eu Suk KIM ; Baek Nam KIM ; Dong Hee WHANG ; Jae Won JEONG ; Bye Ran LEE ; Ho Kee YUM ; Bo Moon SHIN ; Byung Hun JUN
Korean Journal of Nosocomial Infection Control 2004;9(1):17-25
BACKGROUND: Methicillin-resistant Staphylococcus aureus (MRSA) is highly prevalent in hospitals in Korea. The overall rate of MRSA in hospitals in Korea was estimated over 60%. Recently hospital infections caused by MRSA are getting increased and problematic in Korea, Our hospital Seoul Paik Hospital, has been trying to solve this problem. We had not applied exact methods for hospital infection control. Therefore, we adapted strict methods under the control of hospital infection control committee (HICC) and assessed the effectiveness of these methods. METHODS: Every month, the number of MRSA isolates was collected and analyzed; the results of the analysis were reported to every ward. All wards were supplied with Microshild(R) (Johnson & Johnson, Australia), Clean N' Fresh(R) (Carroll, USA), and standard paper towels. Health care workers were regularly educated for hospital infection control. The use of antibiotics was controlled by the HICC. We compared MRSA isolation rate between before and after applying the strict infection control methods under the regulation of HICC. Mann-Whitney U test, one-way ANOVA, and Chi-square test were used for statistical analysis of the results. RESULTS: After restricting the uses of antibiotics, glycopeptides and carbapenems were prescribed 15% less (20.3 vs 17.3 DDD /1000 patient-days) and 35% less (9.3 vs 6.0 DDD /1000 patient-days) respectively, compared to before restricting antibiotics. Methicillin resistance rate was decreased from 78% to 69% compared to before the methods(p=0.02). The isolation rate of MRSA was reduced by 31-42% from 2.33 to 1.35-1.60/1000 patient-days compared to before adapting strict infection control methods (p=0.04-0.07). CONCLUSION: This study showed that applying the strict infection control methods in the hospital can be effective to reduce the isolation rate of MRSA.
Anti-Bacterial Agents
;
Carbapenems
;
Cross Infection*
;
Delivery of Health Care
;
Dichlorodiphenyldichloroethane
;
Glycopeptides
;
Infection Control
;
Korea
;
Methicillin Resistance
;
Methicillin*
;
Methicillin-Resistant Staphylococcus aureus
;
Seoul
;
Staphylococcus aureus*
;
Staphylococcus*
6.Vesicovaginal Fistula Treated by Neurovascular Pudendal-thigh Flap.
Seung Hyun YOU ; Sang Hun BAEK ; Hee Jong JEONG ; Young Cheon NA
Journal of the Korean Continence Society 2007;11(1):70-73
Obstetrical procedures such as prolonged obstructed labour are responsible for the majority of vesicovaginal fistula(VVF) in developing countries, while gynecological procedures are more common causes in developed countries with hysterectomy accounting for 75% of fistulae. Other less common causes of VVF include uterine cancer, pelvic irradiation, gastrointestinal pelvic surgery, tuberculosis, intra-uterine device or Bechet's disease. Although radiation techniques are being advanced, several recent studies have shown the incidence of VVF after pelvic radiation therapy for cervical cancer to range from 0.6~2%. We report, a case of 47-year-old female with VVF after pelvic radiation therapy, which was treated by neurovascular pudendal-thigh flap.
Developed Countries
;
Developing Countries
;
Female
;
Fistula
;
Humans
;
Hysterectomy
;
Incidence
;
Middle Aged
;
Tuberculosis
;
Uterine Cervical Neoplasms
;
Uterine Neoplasms
;
Vesicovaginal Fistula*
7.Quantitative Analysis of Anterior Capsule Opening after PMMA, Silicone and Acrylic Intraocular Lens Implantation.
Hee Jong CHEON ; Tae Min BAEK ; Kyung Hun LEE
Journal of the Korean Ophthalmological Society 2000;41(10):2198-2204
To quantify the periodic changes in the area of anterior capsule opening after cataract surgery and to compare any difference between polymethylmethacrylate (PMMA), silicone and soft acrylic IOLs, we prospectively studied 442 patients (465 eyes)who were operated from September 1997 to November 1999 at our hospital.All patients had standardized phacoemulsification, continuous curvilinear capsulorhexis, and intraocular lens implantation performed by the same surgeon.Patients were randomized into three groups based on the type of intraocular lens.The area of anterior capsule opening was quantitated using the Anterior Eye Segment Analysis System (EAS-1000), and examinations were performed at 1 week and 1, 3 and 6 months after surgery.The mean anterior capsular opening area at 1, 3 and 6 months postoperatively was smaller than that of 1 week in all 3 groups (P<.05)and the mean percentage of reduction in the PMMA and soft acrylic intraocular lens groups was significantly smaller than that in the silicone intraocular lens group at 1, 3 and 6 months after surgery (P<.05).In the silicone group, the contraction of the anterior capsule opening was greater than either PMMA or soft acrylic intraocular lens groups.Further studies will be needed for the evaluation of clinical application of silicone and soft acrylic intraocular lens.
Anterior Eye Segment
;
Capsulorhexis
;
Cataract
;
Humans
;
Lens Implantation, Intraocular*
;
Lenses, Intraocular*
;
Phacoemulsification
;
Polymethyl Methacrylate*
;
Prospective Studies
;
Silicones*
8.Comparison of Right Atrium to Pulmonary Artery Oxygen Saturation During Hemorrhagic Shock , Resuscitation , and Hypoxia in Anesthetized Cats.
Chong Hwa BAEK ; Byung Hee LEE ; Hun CHO ; Sung Kang CHO ; Pyung Hwan PARK ; Jong Moo CHOI
Korean Journal of Anesthesiology 1993;26(5):877-883
Because central venous O2 saturation (superior vena cava, ScvO2) can be monitored with less risk of the patients than mixed venous O2 saturation (pulmonary artery, SvO2), there have been studies to see if ScvO2 could replace SvO2. But previous studies showed that these two measurements were correlated but "not interchangeable. Therefore the authors compared right atrial C#b saturation (SraO2) with S vO2 over a wide range of cardiorespiratory status including control, hemorrhage, resuscitation, and hypoxia in anesthetized cats. We performed thoracotomy and inserted cannulae directly into the right atrium and the pulmonary artery. Blood sampling were obtained synchronously through the cannulae and tested immediately. The correlation coefficients in control, hemorrhage, resuscitation, and hypoxia groups were 0.876, 0.794, 0.946, 0.948 respectively and the two measurements in each group showed statistically significant correlations (p<0.05). But the biases of the two measurements in each group were 0.11+/-2.9, 0.35+/-4.2, -0.55+/-3.2, 0.23+/-4.2 respectively and the limits of agreement ( 2 standard deviation) in all groups exceeded permissible (5%) to conclude that the two measurements were in agreement. Thus, we reached the conclusion that the absolute values of SraO2, though not being sufficiently identical to S vO2 to calculate O2 uptake or pulmonary shunt precisely, can reflect the S vO2 trend following the O2 supply / demand change. Further clinical studies are needed.
Animals
;
Anoxia*
;
Arteries
;
Bias (Epidemiology)
;
Catheters
;
Cats*
;
Heart Atria*
;
Hemorrhage
;
Humans
;
Oxygen*
;
Pulmonary Artery*
;
Resuscitation*
;
Shock, Hemorrhagic*
;
Thoracotomy
9.Relationship between Uncorrected Visual Acuity and Refractive Error in Visual Acuity Test of Children.
Soon Chul BAEK ; Dong Hun LEE ; Soo Hyun KIM ; Sung Jin LEE ; Song Hee PARK
Journal of the Korean Ophthalmological Society 2004;45(6):1001-1008
PURPOSE: To evaluate the relationship of uncorrected visual acuity and refractive error in children. METHODS: Visual acuity testing was performed, using LogMAR chart without optical aids, in children between 4 and 11 years old. Cycloplegic refraction was carried out to check the refractive error. Correlation indices between uncorrected visual acuity (UCVA) and refractive error were obtained by regression analysis with SPSS according to the sex, age, and refractive error type, myopia, or hyperopia. RESULTS: One hundred and one children were enrolled in this study. Spherical refractive error range was -13.00D~+6.25D and cylinder range was -4.50D~0D. In the older age group, correlation indices of UCVA and refractive error increased. In addition, female patient and myopia were other components that increased the correlation indices. The formulae for the UCVA regression line and refractive error were; y=0.491e0.1492x (x=refractive error, y=UCVA), R2=0.4319. Based on the regression line, a prediction table to calculate the refractive error from the UCVA and UCVA prediction table of refractive error was made. CONCLUSIONS: For the children who are not cooperative, the prediction table of this study will be helpful to reduce the test error in visual acuity and refractive error tests.
Child*
;
Female
;
Humans
;
Hyperopia
;
Myopia
;
Refractive Errors*
;
Visual Acuity*
10.Misdiagnosed Handlebar Palsy: Giant Cell Tumor of the Tendon Sheath in Guyon's Canal.
Young Jun KIM ; Duke Whan CHUNG ; Jong Hun BAEK
The Korean Journal of Sports Medicine 2015;33(2):139-142
Ulnar tunnel syndrome (UTS) is a compressive neuropathy of the upper extremity that shows various clinical symptoms according to the anatomic region of the compression site. Numerous factors may cause UTS, and most publications are case reports describing various etiologies; thus, obtaining a correct diagnosis is often challenging. Giant cell tumor of the tendon sheath (GCTTS) is well described to be a common benign soft tissue tumor of the hand; however, it is rarely reported to cause UTS. We report a case of GCTTS in Guyon's canal causing UTS that was misdiagnosed as handlebar palsy.
Diagnosis
;
Giant Cell Tumors*
;
Giant Cells*
;
Hand
;
Paralysis*
;
Tendons*
;
Ulnar Nerve Compression Syndromes
;
Ulnar Neuropathies
;
Upper Extremity