PURPOSE: To compare the surgical outcomes between modified bilateral lateral rectus muscle (BLR) recession and augmented unilateral recession-resection (R&R) for the convergence insufficiency intermittent exotropia (IXT). METHODS: 37 patients with convergence insufficiency IXT were divided into two groups: 13 patients (underwent BLR recession) and 24 patients (underwent unilateral R&R). Success was defined as within 10 prism diopters (PD) at distance and near, and within 10 PD of the difference between them at postoperative 12 months. RESULTS: After the patch test, the preoperative distance deviation angle in the BLR group was 29.9 ± 8.4 PD, and the near deviation angle was 42.3 ± 9.7 PD; the difference between them was 12.5 ± 3.2 PD. In the R&R group, the preoperative distance deviation angle was 26.7 ± 5.8 PD, and the near deviation angle was 41.5 ± 7.4 PD; the difference between them was 14.8 ± 4.3 PD (p = 0.235, p = 0.987, and p = 0.123). At the 12-month follow-up in the BLR group, the distance angle was 3.8 ± 5.1 PD, and the near deviation angle was 4.9 ± 6.1 PD; the difference between them was 2.9 ± 5.9 PD. In the R&R group, the postoperative distance deviation angle was 4.7 ± 6.1 PD, and the near deviation angle was 7.9 ± 6.6 PD; the difference between them was 3.65 ± 5.1 PD (p = 0.708, p = 0.162, and p = 0.632, respectively). The surgical success rate did not differ significantly between groups at 12 months postoperatively (76.9%: BLR group and 70.8%: R&R group; p = 0.690). CONCLUSIONS: Modified BLR recession showed a similar surgical success rate to augmented unilateral R&R, and was effective in reducing both distance and near exodeviation, and in decreasing the difference between distance and near deviation in convergence insufficiency IXT.
Exotropia ; Follow-Up Studies ; Humans ; Ocular Motility Disorders ; Patch Tests

PURPOSE: To evaluate morphologic characteristics of the microcalcifications on mammography that were confirmed pathologically. MATERIALS AND METHODS: Forty five cases of microcalcifications on mammography (fifteen cases of benign lesion, thirty cases of maiignancy) were retrospectively reviewed. RESULTS: The number of microcalcifications within 1 cm2 were more than 5 in 22 cases (73%) of 30 malignancy and less than 5 in 11 cases (73%) of 15 benignity. The heterogeneity of microcalcifications were seen in 26 cases of malignancy (87%) and the homogeneity of microcaicifications were 11 cases of benignity (73%). The morphologic characteristics of the microcalcifications were linear-V shape in 9 cases (30%), punctate shape in 8 cases (27%), fine stippled shape in 7 cases (23%), and round dot shape in 6 cases (20%) of malignancy and, round dot shape in 11 cases (73%), punctate shape in 2 cases (13%), and linear-V shape in 2 cases (13%) of benignity. CONCLUSION: Numerous irregular microcalcifications that are heterogenous in size and morphology were strong indicators of malignancy.
Mammography ; Population Characteristics ; Retrospective Studies

PURPOSE: The purpose of our study was to evaluate the cause of acquired third, fourth, and sixth nerve palsy while also establishing recovery rates and important factors for recovery. METHODS: A retrospective chart review was performed for 92 patients who visited the ophthalmologic department of Konyang University Hospital with acquired third, fourth, and sixth nerve palsy from March 2015 to February 2016. Recovery rates and factors for recovery were evaluated in only 66 patients who received first ocular exam within 2 weeks of onset and who were followed up for at least 6 months. Complete recovery was defined as both complete recovery of the angle of deviation and the restoration of eye movement in all directions. For the degree of ocular motor restriction, −4 was defined as not crossing the midline and −2 was defined as 50% eye movement. The degree of ocular motor restriction was analyzed from −1/2 to 4. RESULTS: The fourth nerve was affected most frequently (n = 37, 40.2%), followed by the sixth cranial nerve (n = 33, 35.9%), the third cranial nerve (n = 18, 19.6%), and a combination of 2 or more cranial nerves (n = 4, 4.3%). Vasculopathy (n = 44, 47.8%) was the most common etiology, followed by trauma (n = 14, 15.2%), idiopathic (n = 13, 14.1%), inflammation(n = 10, 10.9%), neoplasm (n = 9, 9.8%), and aneurysm (n = 2, 2.2%). Complete recovery rate occurred for 66.7% (n = 44) of patients, and the overall recovery rate (i.e., at least partial recovery) was 86.3% (n = 57). Significant factors for complete recovery were the initial deviation angle and the limitation of extraocular movement (p < 0.001, p = 0.005, respectively, according to univariate analysis). CONCLUSIONS: In this study, paralytic strabismus due to vasculopathy was the most common etiology, and a lower degree of initial deviation resulted in an improved complete recovery rate. In addition, a high overall recovery rate was possible through quick diagnosis and early treatment of cranial nerve palsy.
Abducens Nerve ; Abducens Nerve Diseases ; Aneurysm ; Cranial Nerve Diseases ; Cranial Nerves ; Diagnosis ; Eye Movements ; Humans ; Oculomotor Nerve ; Retrospective Studies ; Strabismus*

No abstract available.
Child ; Eye Movements/*physiology ; Humans ; Male ; Oculomotor Muscles/physiopathology/*surgery ; Ophthalmologic Surgical Procedures/*methods ; Strabismus/physiopathology/*surgery ; Syndrome

OBJECTIVES: To determine the optimal timing for post space preparation of root canals sealed with epoxy resin-based AH Plus sealer in terms of its polymerization and influence on apical leakage. MATERIALS AND METHODS: The epoxy polymerization of AH Plus (Dentsply DeTrey) as a function of time after mixing (8, 24, and 72 hours, and 1 week) was evaluated using Fourier transform infrared (FTIR) spectroscopy and microhardness measurements. The change in the glass transition temperature (Tg ) of the material with time was also investigated using differential scanning calorimetry (DSC). Fifty extracted human single-rooted premolars were filled with gutta-percha and AH Plus, and randomly separated into five groups (n = 10) based on post space preparation timing (immediately after root canal obturation and 8, 24, and 72 hours, and 1 week after root canal obturation). The extent of apical leakage (mm) of the five groups was compared using a dye leakage test. Each dataset was statistically analyzed by one-way analysis of variance and Tukey's post hoc test (α = 0.05). RESULTS: Continuous epoxy polymerization of the material with time was observed. Although the T(g) values of the material gradually increased with time, the specimens presented no clear T(g) value at 1 week after mixing. When the post space was prepared 1 week after root canal obturation, the leakage was significantly higher than in the other groups (p < 0.05), among which there was no significant difference in leakage. CONCLUSIONS: Poor apical seal was detected when post space preparation was delayed until 1 week after root canal obturation.
Bicuspid ; Calorimetry, Differential Scanning ; Dataset ; Dental Pulp Cavity* ; Fourier Analysis ; Glass ; Gutta-Percha ; Humans ; Polymerization ; Polymers ; Post and Core Technique ; Root Canal Obturation ; Root Canal Preparation ; Spectrum Analysis ; Transition Temperature

PURPOSE: The objective of this study was to establish the serum IGF-1 level in newborn infants, and investigate its association with growth and diseases. METHODS: In a retrospective study, serum IGF-1 levels were measured for newborn infants admitted to NICU at Kyungpook University Hospital from March 2007 to July 2007. Birth data, disease history, and hospital course were obtained from medical records. RESULTS: Of 52 blood samples obtained at birth, serum IGF-l levels in 30 preterm infants (31.6+/-27.3 ng/mL) were lower than in 22 full-term infants (53.4+/-40.0 ng/mL; P<0.05). In sick full-term infants, serum IGF-1 levels (46.0+/-40.2 ng/mL) were lower than in healthy full-term infants (64.1+/-39.5 ng/mL; P<0.05). In preterm infants, there were no differences in IGF-1 levels between healthy (33.2+/-23.3 ng/mL) and sick infants (30.6+/-30.4 ng/mL); however, IGF-1 levels in both sick and healthy preterm infants were lower than in healthy full-term infants. Among infants admitted after 8 days of life, serum IGF-1 levels were higher in infants who gained weight (70.8+/-36.2 ng/mL) than in infants who lost weight (13.3+/-19.9 ng/mL; P<0.01); however IGF-1 levels showed no difference between gender or method of delivery. CONCLUSION: The study showed lower IGF-l levels in preterm infants than in full-term infants. Additionally, the IGF-l level in infants with weight loss was lower than in infants with weight gain. These results indicate that serum IGF-1 is associated with gestational age and postnatal growth.
Gestational Age ; Humans ; Infant ; Infant, Newborn ; Infant, Premature ; Insulin-Like Growth Factor I ; Medical Records ; Parturition ; Retrospective Studies ; Weight Gain ; Weight Loss

This study was prospectively conducted to investigate any relationship of nutritional status at the time of admission to length of hospital stay and mortality. All patients admitted to the Asan Medical Center between October 13 and November 12, 1997 who met the study criteria were included in the study. Patients were classified as Not-at-risk, At-risk I or At-risk II based on the levels of serum albumin and total lymphocyte count in a computerized nutrition screening program. Sixty three percent of the patients were classified as Not-at-risk Group, 29% as At-risk Group I and 8% as At-risk Group II. Significant correlation was observed between nutritional status and LOS (P<0.01) as well as mortality rate (P<0.05). The more the patient had the nutritional risk factors, the longer the LOS and the higher the mortality rate were. Further studies have to be done in order to demonstrate cost-effectiveness of medical therapy for the malnourished hospitalized patients.
Chungcheongnam-do ; Humans ; Length of Stay* ; Lymphocyte Count ; Mass Screening* ; Mortality* ; Nutritional Status* ; Prospective Studies* ; Risk Factors ; Serum Albumin

This study investigated the mechanical properties and antibacterial activity of glass ionomer cement (GIC) containing 1 mol% or 5 mol% gallium phosphate glass (GPG) powder. GPG were added to conventional GIC powder in a range of 0~20 wt%. The specimens for compressive strength (4 mmØ×6 mm) and diametral tensile strength (6 mmØ×4 mm) were prepared by mixing with the cement liquid and kept in an water of 37±1℃. Mechanical properties were evaluated at an interval of 1 h, 24 h, and 7 days. Antibacterial activity of specimens against to S. mutans and S. sobrinus was evaluated using agar diffusion methods. Data were statistically analyzed by one-way ANOVA and Tukey HSD post-hoc test (p<0.05). Diametral tensile strength of GIC containing GPG were significantly higher than control GIC while compressive strength showed no statistical difference. There was an increasing tendency of antibacterial activity for GPG-GICs. Results indicated that GPG can be considered as potential reinforcing agent for increasing antibacterial and mechanical properties for conventional GIC.

PURPOSE: To evaluate the long-term change of postoperative refraction after cataract surgery in patients with a history of LASIK. METHODS: A retrospective chart review was performed on 40 eyes of 28 patients who had undergone cataract surgery with a history of LASIK, and 40 eyes of 31 patients who had undergone cataract surgery without LASIK. We evaluated preoperative target refraction, and postoperative refraction during the 2-year follow-up period. RESULTS: In the group with a history of LASIK, the target refraction was -1.00 +/- 0.98 D, the 2-month postoperative spherical equivalent was -0.53 +/- 1.92 D, and the 2-year postoperative spherical equivalent was -1.03 +/- 1.84 D. In the group with cataract surgery only, the target refraction was -1.44 +/- 1.06 D, the 2-month postoperative spherical equivalent was -1.07 +/- 1.27 D, and the 2-year postoperative spherical equivalent was -0.97 +/- 1.28 D. The difference in mean spherical equivalent at 2 months postoperatively and at 2 years postoperatively between the 2 groups was statistically significant (p = 0.037). The difference in mean spherical equivalent preoperatively and 2 years postoperatively between the 2 groups was statistically significant (p = 0.002). In the group with cataract surgery only, the postoperative refraction shifted to hyperopic refractive power, and was statistically significant. In the group with a history of LASIK, there were no statistically significant differences between preoperative and postoperative refraction. There were no statistically significant differences according to the cataract type in the group with a history of LASIK. The greater the myopic preoperative spherical equivalent was, the shorter the duration between LASIK and cataract surgery, which was significant in the group with a history of LASIK. CONCLUSIONS: The long-term refractive change after cataract surgery was statistically significant between the cataract surgery after LASIK group and the cataract surgery alone group.
Cataract ; Eye ; Follow-Up Studies ; Humans ; Keratomileusis, Laser In Situ ; Myopia ; Retrospective Studies

A national sample survey of medical students about their perception and evaluation on medical study, career plan, and medical care system was conducted in December 1997 through January 1998. About 10% of all the medical students in 32 medical schools that had students from freshman to senior in November 1997 were systematically sampled for a questionnaire survey. Out of 1,386 students, 1,233(89.0%) had responded and 12 of them were excluded from the analysis because of incomplete response. This report is the second part of the study regarding career plan of students after graduating from medical school. Criteria of medical students for choosing specialty of medicine are professional reward and personal interest. Among the respondents, 92.2% plan to choose clinical medicine, 2.5% basic medical sciences, and 4.8% special areas of medicine such as health administration, medical engineering, forensic medicine, medical education, and health economics. If it is guaranteed that they will be a professor after training, 8.8% of them want to study special areas of medicine, and 7.3% basic medical sciences. The students who had admitted to a medical school after obtaining bachelor's degree were more prone to choose clinical medicine than other students. The most common reason for not choosing basic medical sciences was lower income than clinician. Among the students who want to be a clinician, 92.2% want to be a specialist and the preferred specialties were internal medicine 36.0%, orthopedics 9.0%, general surgery 7.7%, psychiatry 7.5%, and pediatrics 5.7%. Comparing with the findings of 1983 study, the proportions of students who want to major internal medicine and minor subjects were markedly increased and that of general surgery increased slightly while that of pediatrics was decreased. The places of work that the students prefer in the future were university hospital 43.2% (10% point increase from the finding in 1983), general hospital 37.1% and private practice 9.4% (10% point decrease from the finding in 1983). It was noticeable that some of the students want to be a medical missionary and health administrator. The students prefer their university hospital most for post-graduate training and the reason is only because it is their alma mater. One can anticipate from these findings that it will be very difficult to get basic medical scientists and primary physicians in the future.
Administrative Personnel ; Clinical Medicine ; Surveys and Questionnaires ; Education, Medical ; Forensic Medicine ; Hospitals, General ; Humans ; Internal Medicine ; Missions and Missionaries ; Orthopedics ; Pediatrics ; Private Practice ; Reward ; Schools, Medical* ; Specialization ; Students, Medical* ; Workplace