1.A Case of a Cataract Patient with Equatorial and Posterior Zonular Weakness in Both Eyes
Jeong Woo KWON ; In Seok JEONG ; In Young CHUNG ; Seong Wook SEO ; Seong Jae KIM
Journal of the Korean Ophthalmological Society 2025;66(4):209-213
Purpose:
We present a case of equatorial and posterior zonular weakness observed during cataract surgery in both eyes with no prior history of trauma or surgery.Case summary: A 73-year-old woman visited out clinic and reported decreased visual acuity. She was found to have a best corrected visual acuity of 0.5 in both eyes. Cataracts were noted during a slit lamp examination and cataract surgery was subsequently performed. During the left eye surgery, although there was no evident weakening during the anterior capsulotomy, the equatorial and posterior zonules were damaged during phacoemulsification. This led to consistent aspiration of the equatorial and posterior capsule (PC) into the phaco-handpiece tip during epinucleus and cortex removal. The PC eventually ruptured necessitating anterior vitrectomy and a 3-piece intraocular lens insertion into the ciliary sulcus. Two weeks later, the right eye surgery encountered similar challenges in removing the epinucleus and cortex. The surgery was completed successfully by elevating the irrigation bottle, frequently injecting an ophthalmic viscoelastic device (OVD), and removing the remaining lens material using a bimanual irrigator/aspirator.
Conclusions
This case highlights that equatorial and posterior zonular weakness can occur in the absence of trauma or prior to surgery. To manage such cases, it is advisable to elevate the irrigation bottle height, continuously inject OVD during surgery, and use a bimanual irrigator/aspirator.
2.A Case of a Cataract Patient with Equatorial and Posterior Zonular Weakness in Both Eyes
Jeong Woo KWON ; In Seok JEONG ; In Young CHUNG ; Seong Wook SEO ; Seong Jae KIM
Journal of the Korean Ophthalmological Society 2025;66(4):209-213
Purpose:
We present a case of equatorial and posterior zonular weakness observed during cataract surgery in both eyes with no prior history of trauma or surgery.Case summary: A 73-year-old woman visited out clinic and reported decreased visual acuity. She was found to have a best corrected visual acuity of 0.5 in both eyes. Cataracts were noted during a slit lamp examination and cataract surgery was subsequently performed. During the left eye surgery, although there was no evident weakening during the anterior capsulotomy, the equatorial and posterior zonules were damaged during phacoemulsification. This led to consistent aspiration of the equatorial and posterior capsule (PC) into the phaco-handpiece tip during epinucleus and cortex removal. The PC eventually ruptured necessitating anterior vitrectomy and a 3-piece intraocular lens insertion into the ciliary sulcus. Two weeks later, the right eye surgery encountered similar challenges in removing the epinucleus and cortex. The surgery was completed successfully by elevating the irrigation bottle, frequently injecting an ophthalmic viscoelastic device (OVD), and removing the remaining lens material using a bimanual irrigator/aspirator.
Conclusions
This case highlights that equatorial and posterior zonular weakness can occur in the absence of trauma or prior to surgery. To manage such cases, it is advisable to elevate the irrigation bottle height, continuously inject OVD during surgery, and use a bimanual irrigator/aspirator.
3.A Case of a Cataract Patient with Equatorial and Posterior Zonular Weakness in Both Eyes
Jeong Woo KWON ; In Seok JEONG ; In Young CHUNG ; Seong Wook SEO ; Seong Jae KIM
Journal of the Korean Ophthalmological Society 2025;66(4):209-213
Purpose:
We present a case of equatorial and posterior zonular weakness observed during cataract surgery in both eyes with no prior history of trauma or surgery.Case summary: A 73-year-old woman visited out clinic and reported decreased visual acuity. She was found to have a best corrected visual acuity of 0.5 in both eyes. Cataracts were noted during a slit lamp examination and cataract surgery was subsequently performed. During the left eye surgery, although there was no evident weakening during the anterior capsulotomy, the equatorial and posterior zonules were damaged during phacoemulsification. This led to consistent aspiration of the equatorial and posterior capsule (PC) into the phaco-handpiece tip during epinucleus and cortex removal. The PC eventually ruptured necessitating anterior vitrectomy and a 3-piece intraocular lens insertion into the ciliary sulcus. Two weeks later, the right eye surgery encountered similar challenges in removing the epinucleus and cortex. The surgery was completed successfully by elevating the irrigation bottle, frequently injecting an ophthalmic viscoelastic device (OVD), and removing the remaining lens material using a bimanual irrigator/aspirator.
Conclusions
This case highlights that equatorial and posterior zonular weakness can occur in the absence of trauma or prior to surgery. To manage such cases, it is advisable to elevate the irrigation bottle height, continuously inject OVD during surgery, and use a bimanual irrigator/aspirator.
4.Impact of Extended Lymph Node Dissection on Survival Outcomes in Patients With Bladder Cancer and Upper Tract Urothelial Carcinoma: A Multicenter Retrospective Study
Jiwoong YU ; Wook NAM ; Kyung Hwan KIM ; Yun-Sok HA ; Geehyun SONG ; Ho Kyung SEO ; Jong Kil NAM ; Tae Il NOH ; Seok Ho KANG ; Seung-Hwan JEONG ; Ja Hyeon KU ; Jong Jin OH ; Ji Eun HEO ; Won Sik HAM ; Joongwon CHOI ; Bumjin LIM ; Bumsik HONG ; Wan SONG ; Minyong KANG ; Hwang Gyun JEON ; Seong Il SEO ; Seong Soo JEON ; Hyun Hwan SUNG ; Byong Chang JEONG ;
Journal of Urologic Oncology 2025;23(1):79-87
Purpose:
To evaluate whether extended pelvic lymph node dissection (PLND) improves survival outcomes compared with standard PLND in patients with bladder cancer (BCa) undergoing radical cystectomy (RC), and to assess its potential benefits in patients with prior or concurrent radical nephroureterectomy (p/cRNU).
Materials and Methods:
A multicenter analysis included 2202 patients with BCa undergoing RC with standard or extended PLND at 11 tertiary centers from 2003 to 2023. Following propensity score matching, 659 pairs (n=1,318), including 128 patients with p/cRNU, were analyzed. Recurrence-free survival (RFS) was the primary outcome, while overall survival (OS), cancer-specific survival (CSS), and readmission rates were secondary outcomes. Survival analyses performed using Kaplan-Meier methods and clustered Cox models.
Results:
Extended PLND yielded significantly more lymph nodes than standard PLND (median: 27.0 vs. 17.0, p<0.001) but did not improve RFS, CSS, or OS in the overall cohort (all p>0.05). Extended PLND increased readmission rates (28.4% vs. 20.2%, p=0.001) and readmission risk (odds ratio, 1.57; 95% confidence interval [CI], 1.15–2.16, p=0.005). However, subgroup analysis revealed extended PLND significantly improved RFS in patients with p/cRNU (hazard ratio, 0.54; 95% CI, 0.38–0.77; p<0.001).
Conclusion
Extended PLND does not provide survival benefits for overall patient population and increases readmission risk but significantly improves RFS in patients with p/cRNU. Tailoring PLND extent based on upper tract disease status is recommended.
5.The effects of Syzygium aromaticum L. administration on lipid and muscle metabolism in obese rats subjected to moderate-intensity exercise
Min Ju KIM ; Seong-Soo ROH ; Seong-Wook SEO ; Kyoung KIM ; Mi-Rae SHIN
Journal of Nutrition and Health 2024;57(1):27-42
Purpose:
This study examined whether regular moderate-intensity treadmill exercise (Ex) and Syzygium aromaticum L. (SA) administration can influence lipid and muscle metabolism in obese rats induced by a 60% high-fat diet (HFD).
Methods:
Rats, except those in the Normal group, were exposed to a 60% HFD for 4 weeks to induce obesity. The obese rats were assigned randomly to three groups: HFD control group, HFD+Ex group, and HFD+Ex+SA group. Treadmill exercise was conducted five times a week for 4 weeks, with a 5° incline and a speed of 18 m/min (Week 1: 20 minutes; Weeks 2: 25 minutes; Weeks 3–4: 30 minutes). Serum analysis was performed. Western blot analysis was conducted on the liver and soleus muscle, and histopathological analysis was carried out on the liver and adipose tissues.
Results:
The body weight change in the Ex groups was significantly lower than in the HFD control group, while the soleus muscle weight in the HFD+Ex group increased significantly.The histopathological examination in the Ex groups revealed a marked reduction in liver lipid accumulation and a decrease in adipocyte size in adipose tissue. Obesity induction increased leptin levels substantially, but Ex notably reversed these changes. Ex resulted in significant inhibition of ROS and ONOO− , whereas the serum inflammatory cytokine, IL-1β, and total cholesterol were reduced only by SA administration. Furthermore, the inflammatory proteins in the liver were inhibited more effectively when Ex was supplemented with SA.The expression of the muscle synthesis-related proteins and degradation proteins were modulated by Ex and Ex+SA.
Conclusion
Ex significantly affected lipid and muscle metabolism, and adding SA alleviated the inflammation.
6.Central Neurogenic Hyperventilation Following Ischemic Stroke in the Pons
Hyeo Seo MOON ; Byoung Wook HWANG ; Min A LEE ; Chang Ju LEE ; Ju Hye KIM ; Jun Hyeok PARK ; Seong Hwan AHN
Journal of the Korean Neurological Association 2024;42(3):245-247
Central neurogenic hyperventilation (CNH) is a rare condition that characterized by an increase in the rate and depth of respiration to an extent that produces advanced respiratory alkalosis due to various central nervous disorder. The mechanism of CNH remains unclear. We reported a case of CNH in patients with progressive ischemic stroke in pons, including parabrachial nucleus, which is thought to have disrupted inhibitory impulses to the medullary respiratory center.
7.Colletotrichum Jasminigenum-induced Infectious Sclerokeratitis: A Case Report
In Seok JEONG ; Woong Sun YOO ; In Young CHUNG ; Seong Wook SEO ; Jung Hyun BYUN ; Seong Jae KIM
Journal of the Korean Ophthalmological Society 2024;65(5):337-341
Purpose:
We present a case of Colletotrichum jasminigenum (C. jasminigenum)-induced Infectious sclerokeratitis.Case summary: An 81-year-old patient presented to our hospital with left eye pain and decreased vision that had started 7 days prior. He had a history of left eye pterygium excision a decade earlier. Examination using a slit lamp revealed a nasal conjunctival defect, scleral melting, deep stromal infiltration with a feathery margin, and hypopyon. Considering the suspicion of fungal sclerokeratitis, we performed a smear analysis and potassium hydroxide (KOH) and culture testing. The KOH test revealed hyphae, leading to systemic fluconazole and topical fluconazole and natamycin. Subsequently, we performed surgery, including debridement of the necrotic scleral area, conjunctival rotation and scleral grafting, and anterior chamber irrigation with intracameral and intravitreal voriconazole injections, due to progressive corneal infiltration and scleral melting. Additionally, we switched to using systemic and topical voriconazole. The culture yielded fungi, with DNA sequencing confirming C. jasminigenum as the causative agent. Following treatment, the lesion improved, and no signs of recurrence were observed.
Conclusions
Voriconazole is an effective treatment for C. jasminigenum-induced fungal sclerokeratitis.
8.A Case of Compressive Optic Neuropathy Caused by Orbital Emphysema
Jeong Woo KWON ; Seong Wook SEO
Journal of the Korean Ophthalmological Society 2024;65(10):687-692
Purpose:
We report a patient with compressive optic neuropathy (CON) in whom visual acuity (VA) was restored after removing conjunctival emphysema through the conjunctiva.Case summary: A 55-year-old man was transferred to emergency department complaining of decreased VA in the right eye after trauma to the right temporal side of the head. The best-corrected visual acuity (BCVA) was 0.6 in the right eye. We confirmed a relative afferent pupillary defect and limited eye movement inferiorly in the right eye. The patient had blown his nose several times while being transferred to the hospital. On silt-lamp examination, there was conjunctival emphysema of the right eye. Orbital computed tomography showed a medial wall fracture of the right orbit and orbital emphysema above the optic canal. The P100 wave was delayed in the visual evoked potential (VEP) exam, and there was a decreased peripheral visual field on the Humphrey visual field test. Based on these findings, we diagnosed CON and treated him accordingly. To decompress the intra-orbital area, we injected mannitol intravenously, applied intraocular pressure-lowering and antibiotic eye drops in the right eye, and removed part of the conjunctival emphysema through the conjunctiva. At the 3-week follow-up, the BCVA had improved to 1.0 in the right eye with a normalized P100 wave on the VEP exam.
Conclusions
In a case of CON caused by orbital emphysema after trauma, it is important to decrease the intra-orbital pressure as soon as possible to enable a good prognosis for the VA.
9.Long-term tracking of glycosylated hemoglobin levels across the lifespan in type 1 diabetes: from infants to young adults
Sujin KIM ; Seo Jung KIM ; Kyoung Won CHO ; Kyungchul SONG ; Myeongseob LEE ; Junghwan SUH ; Hyun Wook CHAE ; Ho-Seong KIM ; Ahreum KWON
Annals of Pediatric Endocrinology & Metabolism 2024;29(4):242-249
Purpose:
Glycosylated hemoglobin (HbA1c) is commonly used as a monitoring tool in diabetes. Due to the potential influence of insulin resistance (IR), HbA1c level may fluctuate over a person's lifetime. This study explores the long-term tracking of HbA1c level in individuals diagnosed with type 1 diabetes mellitus (T1DM) from infancy to early adulthood.
Methods:
The HbA1c levels in 275 individuals (121 males, 43.8%) diagnosed with T1DM were tracked for an average of 9.4 years. The distribution of HbA1c levels was evaluated according to age with subgroups divided by gender, use of continuous glucose monitoring (CGM), and the presence of complications.
Results:
HbA1c levels were highest at the age of 1 year and then declined until age 4, followed by a significant increase, reaching a maximum at ages 15–16 years. The levels subsequently gradually decreased until early adulthood. This pattern was observed in both sexes, but it was more pronounced in females. Additionally, HbA1c levels were higher in CGM nonusers compared with CGM users; however, regardless of CGM usage, an age-dependent pattern was observed. Furthermore, diabetic complications occurred in 26.8% of individuals, and the age-dependent pattern was observed irrespective of diabetic complications, although HbA1c levels were higher in individuals with diabetic complications.
Conclusion
HbA1c levels vary throughout the lifespan, with higher levels during adolescence. This trend is observed regardless of sex and CGM usage, potentially due to physiological IR observed during adolescence. Hence, physiological IR should be considered when interpretating HbA1c levels during adolescence.
10.Efficacy and Safety of Metformin and Atorvastatin Combination Therapy vs. Monotherapy with Either Drug in Type 2 Diabetes Mellitus and Dyslipidemia Patients (ATOMIC): Double-Blinded Randomized Controlled Trial
Jie-Eun LEE ; Seung Hee YU ; Sung Rae KIM ; Kyu Jeung AHN ; Kee-Ho SONG ; In-Kyu LEE ; Ho-Sang SHON ; In Joo KIM ; Soo LIM ; Doo-Man KIM ; Choon Hee CHUNG ; Won-Young LEE ; Soon Hee LEE ; Dong Joon KIM ; Sung-Rae CHO ; Chang Hee JUNG ; Hyun Jeong JEON ; Seung-Hwan LEE ; Keun-Young PARK ; Sang Youl RHEE ; Sin Gon KIM ; Seok O PARK ; Dae Jung KIM ; Byung Joon KIM ; Sang Ah LEE ; Yong-Hyun KIM ; Kyung-Soo KIM ; Ji A SEO ; Il Seong NAM-GOONG ; Chang Won LEE ; Duk Kyu KIM ; Sang Wook KIM ; Chung Gu CHO ; Jung Han KIM ; Yeo-Joo KIM ; Jae-Myung YOO ; Kyung Wan MIN ; Moon-Kyu LEE
Diabetes & Metabolism Journal 2024;48(4):730-739
Background:
It is well known that a large number of patients with diabetes also have dyslipidemia, which significantly increases the risk of cardiovascular disease (CVD). This study aimed to evaluate the efficacy and safety of combination drugs consisting of metformin and atorvastatin, widely used as therapeutic agents for diabetes and dyslipidemia.
Methods:
This randomized, double-blind, placebo-controlled, parallel-group and phase III multicenter study included adults with glycosylated hemoglobin (HbA1c) levels >7.0% and <10.0%, low-density lipoprotein cholesterol (LDL-C) >100 and <250 mg/dL. One hundred eighty-five eligible subjects were randomized to the combination group (metformin+atorvastatin), metformin group (metformin+atorvastatin placebo), and atorvastatin group (atorvastatin+metformin placebo). The primary efficacy endpoints were the percent changes in HbA1c and LDL-C levels from baseline at the end of the treatment.
Results:
After 16 weeks of treatment compared to baseline, HbA1c showed a significant difference of 0.94% compared to the atorvastatin group in the combination group (0.35% vs. −0.58%, respectively; P<0.0001), whereas the proportion of patients with increased HbA1c was also 62% and 15%, respectively, showing a significant difference (P<0.001). The combination group also showed a significant decrease in LDL-C levels compared to the metformin group (−55.20% vs. −7.69%, P<0.001) without previously unknown adverse drug events.
Conclusion
The addition of atorvastatin to metformin improved HbA1c and LDL-C levels to a significant extent compared to metformin or atorvastatin alone in diabetes and dyslipidemia patients. This study also suggested metformin’s preventive effect on the glucose-elevating potential of atorvastatin in patients with type 2 diabetes mellitus and dyslipidemia, insufficiently controlled with exercise and diet. Metformin and atorvastatin combination might be an effective treatment in reducing the CVD risk in patients with both diabetes and dyslipidemia because of its lowering effect on LDL-C and glucose.

Result Analysis
Print
Save
E-mail