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Sang Joon Lee 10 Articles
The effect of suture by absorbable material on corneal astigmatism after phacoemulsification
Jae Ho Yoo, Sang Joon Lee
Kosin Med J. 2018;33(3):318-327.   Published online December 31, 2018
DOI: https://doi.org/10.7180/kmj.2018.33.3.318
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Abstract PDFPubReader   CrossRef-TDMCrossref - TDM
Objectives

To investigate the effect of absorbable suture on surgically-induced corneal astigmatism in 3.0-mm sclera tunnel cataract surgeries.

Methods

Medical records of patients who underwent phacoemulsification cataract surgery using a 3.0-mm sclera tunnel incision made by a single surgeon were reviewed. Uncorrected distant visual acuity, corneal astigmatism and surgically-induced astigmatism were measured in 56 patients' eyes that underwent sclera tunnel cataract surgery with absorbable sutures (sutured group) and in 23 patients' eyes without sutures (unsutured group). Uncorrected visual acuity, intraocular pressure, slit lamp examination, and automated keratometry were evaluated preoperatively and at 3 days, 2 weeks, 4 weeks, and 8 weeks after cataract operation.

Results

There were no significant differences in preoperative average uncorrected distant visual acuity of the two groups (sutured group: 0.79 ± 0.64, unsutured group: 0.68 ± 0.72, P = 0.145). Corneal astigmatism measured using keratometry in the sutured and unsutured group at postoperative day 3 were 2.27 ± 2.12 D versus 0.83 ± 0.55 D at (P < 0.001), a difference which had disappeared after 4 weeks. Surgically induced astigmatism using the Holladay and Vector methods showed similar outcomes, suggesting that the sutured group exhibited higher astigmatism compared with the unsutured group until 2 weeks post-surgery.

Conclusions

TPatients undergoing scleral tunnel cataract surgery with absorbable sutures have greater surgically induced astigmatism, especially in the early postoperative period, compared with those without sutures. However, this surgically induced astigmatism due to absorbable sutures in scleral tunnel cataract surgery is temporary and disappears at 4 weeks post-surgery.

Correlation between nasal mucosal thickness around the lacrimal sac fossa and surgical outcomes in endonasal dacryocystorhinostomy
Jae Ho Yoo, Chang Zoo Kim, Ki Yup Nam, Seung Uk Lee, Jae Ho Lee, Sang Joon Lee
Kosin Med J. 2018;33(3):358-368.   Published online December 31, 2018
DOI: https://doi.org/10.7180/kmj.2018.33.3.358
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Abstract PDFPubReader   CrossRef-TDMCrossref - TDM
Objectives

To identify the relationship between surgical success rate and preoperative nasal mucosal thickness around the lacrimal sac fossa, as measured using computed tomography.

Methods

We reviewed 33 eyes from 27 patients who underwent endoscopic dacryocystorhinostomy after diagnosis of primary nasolacrimal duct obstruction and who were followed-up with for at least six months between 2011 and 2014. We measured preoperative nasal mucosal thickness around the bony lacrimal sac fossa using computed tomography and analyzed patient measurements after classifying them into three groups: the successfully operated group, the failed operation group, and the non-operated group.

Results

Surgery failed in six of the 33 eyes because of a granuloma at the osteotomy site and synechial formation of the nasal mucosa. The failed-surgery group showed a clinically significantly greater decrease in nasal mucosal thickness at the rearward lacrimal sac fossa compared with the successful-surgery group. However, nasal mucosal thickness of fellow eyes (i.e., non-operated eyes) was not significantly different between the two groups, and the location of the uncinate process did not appear to influence mucosal thickness. In the failed group, posteriorly located mucosal thickness of operated eye fossa was thinner than that of the non-operated eyes, but not significantly so.

Conclusions

Our results from this quantitative anatomical study suggest that nasal mucosal thickness is a predictor of endoscopic dacryocystorhinostomy results.

Complications caused by perfluorocarbon liquid used in pars plana vitrectomy
Jae Ho Yoo, Ki Yup Nam, Seung Uk Lee, Ji Eun Lee, Sang Joon Lee
Kosin Med J. 2015;30(2):123-130.   Published online January 20, 2015
DOI: https://doi.org/10.7180/kmj.2015.30.2.123
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Abstract Objectives

To assess the inadvertent intraocular retention of perfluorocarbon liquid (PFCL) after vitreoretinal surgery and their complications.

Methods

We retrospectively reviewed the medical records of 108 patients who underwent vitreoretinal surgeries using intraoperative PFCL (perfluoro-n-octane (C8F18), 0.69 centistoke at 25℃, PERFLUORN®, Alcon, USA) and the removal of PFCL through fluid-air exchange. The analysis was focused on the occurrence of intraocular retained PFCL, diagnoses, surgicalprocedures, and complications.

Results

Retinal detachment (51 cases, 47%) was the most common surgery which used PFCL intraoperatively. Other causes were vitreous hemorrhage (24 cases, 22%), posteriorly dislocated lens (22 cases, 21%), and trauma (11 cases, 10%). Intraocular PFCL was found in a total of 9 (8.3%) eyes. PFCL bubbles remained in anterior chamber and vitreous cavity were observed in 4 cases and subretinal retained PFCL was observed in 5 cases. Three of 5 cases of subretinal PFCL exhibited in subfoveal space. Among the three subfoveal cases, macular hole developed after PFCL removal in 1 case, epiretinal membrane in the area where had been PFCL bubble. However, we observed no complications in 1 case of subfoveal PFCL that was removed by surgery. PFCL in anterior chamber and vitreous cavity were in 4 cases.

Conclusions

The presence of subfoveal PFCL might affect visual and anatomic outcomes. However, subfoveal PFCL may induce visual complications, and therefore requires special attention.

Comparison of Social Nicotine Dependence Using the KTSND-K Questionnaire between patients with lung cancer and non-cancer people
Jin Young Lee, Chul Ho Oak, Tae Won Jang, Maan Hong Jung, Seong Jin Nam, Su Kyung Son, Ji Hyun Lee, Eun Joo Jo, Sang Joon Lee
Kosin Med J. 2015;30(1):51-58.   Published online January 20, 2015
DOI: https://doi.org/10.7180/kmj.2015.30.1.51
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Abstract PDFPubReader   ePub   CrossRef-TDMCrossref - TDM
Abstract Objectives

Smoking is one of the most important leading causes of lung cancer. Smoking habit is recognized as nicotine dependence, which consists of physical and psychosocial dependence. To evaluate social nicotine dependence, the Kano Test for Social Nicotine Dependence (KTSND) working group developed a new questionnaire. We examined the social nicotine dependence among high school students, university students and patients with lung cancer.

Method

We applied Korean version of KTSND(KTSND-K) questionnaire to high school students, university students and patients with lung cancer. Complete data obtained from the 1333 responders were analyzed.

Results

Among the responders, current smokers, past-smokers, and never-smokers were 17.3%, 16.4%, and 66.3% respectively. According to smoking status, the total KTSND-K scores of current smokers were significantly higher than those of past-smokers, and of never-smokers (17.7±6.6 versus 13.7±5.7, and 10.9±5.15, P<0.001). The total KTSND-K scores of males were higher than those of females, suggesting that males have a propensity for depending nicotine socially much more than females (13.2±6.2 and 11.7±5.7 respectively, P<0.05). And the total KTSND scores of the patients with lung cancer, medical students, nursing students, and high school students were 11.2±3.8, 14.9±4.8, 14.6±5.8 and 15.6±5.9 respectively. The scores of patients with lung cancer were significantly lower than non-cancer people(P<0.01). Our study suggested that the KTSND-K questionnaire could be a useful method to evaluate psychosocial aspects of smoking in patients with lung cancer and non-cancer people.

A Case of Tolosa-Hunt Syndrome Misdiagnosed as Migraine
Jae Ho Yoo, Soo Young Kim, Sang Joon Lee
Kosin Med J. 2010;25(2):146-149.   Published online December 31, 2010
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A Case of Visual Loss in Macular Atrophy after Commotio Retinae
Soo Young Kim, Jae Ho Yoo, Sang Joon Lee
Kosin Med J. 2010;25(2):150-153.   Published online December 31, 2010
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Misdiagnosis of Aspergillus Canaliculitis as Chronic Conjunvtivitis
Jung Joo Lee, Ji Eun Lee, Sang Joon Lee
Kosin Med J. 2010;25(1):106-108.   Published online June 30, 2010
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Management of Suprachoroidal Hemorrhage under the Guidance of Ultrasonography
Gi Heon Lee, Jae Ho Yoo, Tae Won Kim, Sang Joon Lee, Shin Dong Kim
Kosin Med J. 2009;24(1):106-109.   Published online June 30, 2009
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Determining Factors of Myopic Refractive Error in 19 Years Old Men
Sang Joon Lee, Ki Su Ahn, Byeng Chul Yu
Kosin Med J. 2008;23(2):66-71.   Published online June 30, 2008
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A Case of Retinal Hemorrhages After Taking Healthy Foods in Diabetic Retinopathy
Sang Joon Lee, Jung Joo Lee, Soo Young Kim, Shin Dong Kim
Kosin Med J. 2008;23(2):119-121.   Published online June 30, 2008
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KMJ : Kosin Medical Journal