Choun-Ki Joo
Catholic University of Korea
OphthalmologySurgeryPathologyMolecular biologyChemistryMaterials scienceImmunologyKeratometerCataract surgeryCorneaVisual acuityKeratomileusisOptical coherence tomographyKeratoconusIntraocular lensLASIKPhacoemulsificationMedicineBiologyCell biology
332Publications
49H-index
6,164Citations
Publications 290
Newest
#1Hyo-Jin Kim (Baekseok University)H-Index: 28
#1Hyojin KimH-Index: 31
Last. Choun-Ki JooH-Index: 49
view all 3 authors...
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#1Jong Hwa Jun (KMU: Keimyung University)H-Index: 5
#2Myeong-Jin Son (KMU: Keimyung University)
Last. Choun-Ki Joo (Catholic University of Korea)H-Index: 49
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Uncontrolled retinal pigment epithelial (RPE) cell proliferation/migration contribute to the pathological tractional membrane development in proliferative vitreoretinopathy. Recent studies reported that microRNA (miR)-124 controls various cellular functions via the direct targeting of small Ras homolog family member G (RHOG). Therefore, we investigated the role of the neuron-specific miR-124 and RHOG in RPE cell proliferation/migration. Alterations in miR-124 and RhoG expression, as per cell con...
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#1Young-Sik Yoo (Catholic University of Korea)H-Index: 11
#2Dae Yu Kim (Inha University)H-Index: 3
Last. Geunyoung Yoon (The Institute of Optics)H-Index: 32
view all 11 authors...
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#1Junjie Piao (Peking Union Medical College Hospital)H-Index: 1
#2Woong-Joo Whang (Catholic University of Korea)H-Index: 6
Last. Choun-Ki Joo (Catholic University of Korea)H-Index: 49
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This study clinically evaluated the visual outcomes after refractive surgery for myopia using femtosecond laser-assisted in situ keratomileusis (femto-LASIK) and flap-off epipolis LASIK (epi-LASIK). In this retrospective case series study, 40 eyes of 27 patients were divided into two groups depending on the technique used for refractive surgery. Femto-LASIK and flap-off epi-LASIK flaps were created using femtosecond laser and Epi-K™ epikeratome, respectively. Uncorrected distance visual acuity (...
1 CitationsSource
#1Young-Sik Yoo (Catholic University of Korea)H-Index: 11
#2Woong-Joo Whang (Catholic University of Korea)H-Index: 6
Last. Geunyoung Yoon (The Institute of Optics)H-Index: 32
view all 5 authors...
This retrospective study was aimed to compare prediction errors from various combinations of biometric data generated using optical coherence tomography (OCT) and develop a new intraocular lens (IOL) formula using biometric data. 145 eyes from 145 patients who underwent femtosecond laser-assisted cataract surgery (FLACS) were enrolled to the present study and they were divided into a training set (n = 92) and a test set (n = 53). Preoperative axial length (AL) and corneal radius were measured us...
1 CitationsSource
#1Young-Sik Yoo (Catholic University of Korea)H-Index: 11
#2Dae Yu Kim (Inha University)H-Index: 3
Last. Geunyoung Yoon (The Institute of Optics)H-Index: 32
view all 11 authors...
Abstract The objective of the present retrospective comparative cohort study was to compare the impact of wearing glasses versus an orthokeratology (Ortho-K) lens on peripheral optical properties and myopia progression in a population of South Korean children. Participants included children with myopia, between 8 and 12 years of age (n = 22 eyes), and divided into two groups: those who used glasses (Group I, n = 9) and those who used an Ortho-K lens (Group II, n = 13). Myopia progression over on...
4 CitationsSource
#1Do Hee Keum (POSTECH: Pohang University of Science and Technology)H-Index: 7
#2Su-Kyoung Kim (POSTECH: Pohang University of Science and Technology)H-Index: 4
Last. Sei Kwang Hahn (Stanford University)H-Index: 58
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A smart contact lens can be used as an excellent interface between the human body and an electronic device for wearable healthcare applications. Despite wide investigations of smart contact lenses for diagnostic applications, there has been no report on electrically controlled drug delivery in combination with real-time biometric analysis. Here, we developed smart contact lenses for both continuous glucose monitoring and treatment of diabetic retinopathy. The smart contact lens device, built on ...
63 CitationsSource
#1Junjie Piao (Catholic University of Korea)H-Index: 3
#1Junjie Piao (Peking Union Medical College Hospital)H-Index: 1
Last. Choun-Ki Joo (Catholic University of Korea)H-Index: 49
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Clear corneal incision (CCI) is a commonly used surgical approach in cataract surgery. In this prospective study, we evaluated the effect of CCI site on surgically induced astigmatism (SIA) and other postoperative astigmatic changes. CCIs were constructed based on the steep meridian of the total corneal refractive power in the 4.0-mm-zone (TCRP4.0), and patients were divided into four groups: temporal, superotemporal, superonasal, and superior according to the site of the incision. TCRP4.0 analy...
3 CitationsSource
#1Young-Sik Yoo (SMC: Samsung Medical Center)H-Index: 1
#1Young-Sik Yoo (SMC: Samsung Medical Center)H-Index: 11
Last. Geunyoung Yoon (The Institute of Optics)H-Index: 32
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The purpose of this study is to evaluate the biometric parameters of crystalline lens components and to find effective factors for predicting postoperative intraocular lens (IOL) position. This retrospective study included 97 eyes from 97 patients with a mean age of 63.00 ± 12.38 (SD) years. The biometric measurements were performed by means of a 3-dimensional optical coherence tomography (3D-OCT) device. Specifically, anterior chamber depth (ACD), aqueous depth (AD), lens thickness (LT), lens m...
3 CitationsSource
#1Seung Pil Bang (UR: University of Rochester)H-Index: 3
#1Seung Pil Bang (KMU: Keimyung University)H-Index: 4
Last. Choun-Ki Joo (Catholic University of Korea)H-Index: 49
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Rationale: Opacification of monofocal intraocular lenses (IOLs) of various designs and materials has been reported. Hydrophilic acrylic IOLs are more prone to opacification than hydrophobic IOLs, but IOL surface modification by hydrophobic materials may improve biocompatibility, and few opacifications of such monofocal lenses have been reported to date. However, here we describe the characteristics of opacification of hydrophilic refractive multifocal IOLs with a hydrophobic surface modification...
4 CitationsSource