Skip Navigation
Skip to contents

KMJ : Kosin Medical Journal

OPEN ACCESS
SEARCH
Search

Author index

Page Path
HOME > Browse articles > Author index
Search
Ki Yup Nam 3 Articles
Revascularization of immature retinas with retinopathy of prematurity using combination therapy of deferred laser treatment after a single intravitreal bevacizumab injection
Ju Seouk Lee, Ki Yup Nam, Ji Eun Lee, Joo Eun Lee, Sang Joon Lee
Kosin Med J. 2023;38(1):28-35.   Published online March 28, 2023
DOI: https://doi.org/10.7180/kmj.22.145
  • 1,477 View
  • 25 Download
  • 2 Citations
Abstract PDFPubReader   ePub   
Background
This study aimed to observe the extent of retinal vascularization in patients with retinopathy of prematurity (ROP) who underwent deferred laser treatment (LT) after a single intravitreal bevacizumab injection (IVB).
Methods
This study retrospectively evaluated 40 consecutive eyes in 21 infants who received a single IVB or LT. Deferred LT was performed in cases of ROP recurrence after a single IVB. To assess the amount of retinal vascularization between the initial IVB and deferred LT, the cases were divided into three groups based on treatment: single IVB, deferred LT after a single IVB, and prompt LT. The growth and associated complications were compared between groups.
Results
There were 12, 16, and 12 eyes in the single IVB, deferred LT, and prompt LT groups, respectively. Deferred LT was performed at an average of 7.9 weeks after a single IVB. In the single IVB group, retinal vascularization proceeded to zone III, whereas the prompt LT group did not show any growth of vascularization beyond the laser scars. In the deferred LT group, during the window period before LT, retinal vascularization progressed from zone I to zone II posterior and from zone II posterior to zone II anterior, respectively, without further ROP recurrence.
Conclusions
Retinal vascularization progressed during the deferred window period, thereby reducing the area of the retina ablated by LT. A single IVB followed by deferred LT can be an alternative treatment option to prevent ablation of zone I or multiple IVBs.

Citations

Citations to this article as recorded by  
  • Comparison of different agents and doses of anti-vascular endothelial growth factors (aflibercept, bevacizumab, conbercept, ranibizumab) versus laser for retinopathy of prematurity: A network meta-analysis
    Amparo Ortiz-Seller, Pablo Martorell, Honorio Barranco, Isabel Pascual-Camps, Esteban Morcillo, José L. Ortiz
    Survey of Ophthalmology.2024;[Epub]     CrossRef
  • What is the effect of deferred laser treatment on reactivated retinopathy of prematurity after anti-VEGF injection?
    Ji Hye Jang
    Kosin Medical Journal.2023; 38(1): 1.     CrossRef
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
  • 1,287 View
  • 1 Download
Abstract PDFPubReader   
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
  • 1,566 View
  • 8 Download
  • 1 Citations
Abstract PDFPubReader   ePub   
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.

Citations

Citations to this article as recorded by  
  • Trocar blade-assisted skewer technique for phacoemulsification of a dislocated lens
    Laura Liu, Yih-Shiou Hwang, Wei-Chi Wu, Chi-Chun Lai, Jorn-Hon Liu
    Taiwan Journal of Ophthalmology.2024; 14(1): 129.     CrossRef

KMJ : Kosin Medical Journal