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Clinical Effects of an Improved Pump Reaction Rate and Automatic Occlusion Sensing System in Phacoemulsification

Kim YN, Lee JA, Kim JY, Kim MJ, Tchah HW

PURPOSE: A recently introduced phacoemulsification system, the WhiteStar Signature® PRO, has demonstrated improved nucleus followability and cutting efficiency via an improved pump regulator with a higher reaction response and an...
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Management of Complication after Hyperopic Laser-assisted in-situ Keratomileusis

Jo J, Park JH, Tchah HW, Kim MJ

PURPOSE: We present a case of a patient who underwent corneal refractive surgery to improve their corrected visual acuity due to a complication of hyperopic laser-assisted in-situ keratomileusis (LASIK). CASE SUMMARY:...
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Comparison of Intracorneal Inlay for Presbyopia Correction: Hydrogel and Small-Aperture Inlays with a Six- Months Follow-Up

Lee JY, Yoo AR, Lee JY, Lim DH, Kim JY, Kim MJ, Chung TY, Chung ES, Tchah HW

PURPOSE: To study the safety and efficacy of corneal reshaping and small-aperture inlays and compare the clinical results. METHODS: From February 2014 to November 2014, 22 corneal reshaping inlays were inserted...
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Comparison of Clinical Outcomes after Various Techniques of Intraocular Lens Dislocation Correction

Sun JH, Kim JY, Kim MJ, Yoon YH, Tchah HW

PURPOSE: To compare clinical outcomes of various surgical methods of intraocular lens dislocation correction surgery. METHODS: We retrospectively analyzed the medical records of patients who underwent intraocular lens dislocation correction surgery...
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Comparison of Surgical Parameters and Outcomes According to the Phacoemulsification Technique

Kim S, Ko DA, Kim JY, Kim MJ, Tchah HW

  • KMID: 2338441
  • J Korean Ophthalmol Soc.
  • 2013 Sep;54(9):1353-1358.
PURPOSE: To compare intraoperative parameters and postoperative results between divide-and-conquer and multiple phaco-chop technique. METHODS: Two different techniques were performed by one operator on the patients with bilateral cataract. One eye...
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Clinical Outcome of in-the-Bag Single-Piece Aspheric Intraocular Lens Implantation after Microincision Cataract Surgery

Kim YJ, Cheon MH, Ko DA, Kim JY, Kim MJ, Tchah HW

PURPOSE: To evaluate the stability and optical performance of the newly developed single-piece aspheric intraocular lens (IOL) by comparing the clinical outcome of the aspheric IOL with the new optic...
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Clinical Characteristics of Glaucomatous Subjects Treated with Refractive Corneal Ablation Surgery

Sung KR, Lee JY, Kim MJ, Na JH, Kim JY, Tchah HW

PURPOSE: To evaluate the clinical characteristics of newly diagnosed glaucomatous subjects who had a history of refractive corneal ablation surgery (RCAS). METHODS: Sixty-eight glaucomatous subjects who had a history of RCAS...
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Clinical Outcomes after Combined Ahmed Glaucoma Valve Implantation and Penetrating Keratoplasty or Pars Plana Vitrectomy

Lee JY, Sung KR, Tchah HW, Yoon YH, Kim JG, Kim MJ, Kim JY, Yun SC, Lee JY

PURPOSE: To evaluate whether a combination of penetrating keratoplasty (PKP) or pars plana vitrectomy (PPV) and Ahmed glaucoma valve (AGV) implantation affords a level of success similar to that of...
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Estimation of Corneal Spherical Aberration from Topography

Park JH, Kim MJ, Kim JY, Tchah HW

  • KMID: 2338285
  • J Korean Ophthalmol Soc.
  • 2012 Nov;53(11):1559-1563.
PURPOSE: To formulate an equation to estimate corneal spherical aberration using Orbscan (Bausch & Lomb Surgical, Rochester, NY, USA) parameters. METHODS: The study was carried out retrospectively. The participants were 76...
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Clinical Outcomes of Aspheric 1-Piece (Tecnis(R) ZCB00) and 3-Piece (Tecnis(R) ZA9003) Aspheric Intraocular Lens for 12 Months

Park JH, Kim JH, Lee JE, Kim JY, Kim MJ, Tchah HW

  • KMID: 2338269
  • J Korean Ophthalmol Soc.
  • 2012 Oct;53(10):1451-1457.
PURPOSE: To evaluate the postoperative outcome of Tecnis(R) ZCB00 1-Piece acrylic intraocular lens (IOL), the new single piece, aspheric IOL until 12 months. METHODS: Sixty eyes undergone cataract surgery using two...
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Comparison of Flap Thickness Measured with Ultrasound Subtraction Method, Direct Method, and Optical Coherence Tomography

Lee SH, Lee JE, Kim JY, Kim MJ, Tchah HW

PURPOSE: To compare the flap thicknesses measured with the ultrasound (US) subtraction method, the direct method, and optical coherence tomography (OCT) in femtosecond laser-assisted LASIK eyes. METHODS: The present study included...
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One-year Outcome of Monocular Implant of Aspheric Multifocal IOL

Cheon MH, Lee JE, Kim JH, Kim KH, Lee HG, Kim JY, Kim MJ, Tchah HW

PURPOSE: To evaluate near and far visual acuity, subjective visual symptoms, and patient satisfaction with a monocular implant of aspheric multifocal IOL (AMO Tecnis ZM900(R)). METHODS: Thirty eyes of 30 patients...
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Changes in Anterior Chamber Depth and Angle After Phacoemulsification measured by Anterior Segment Optical Coherence Tomography

Shin CJ, Lee JE, Kim JY, Tchah HW

  • KMID: 2337807
  • J Korean Ophthalmol Soc.
  • 2010 Mar;51(3):353-358.
PURPOSE: To evaluate changes in anterior chamber depth (ACD) and angle after phacoemulsification and intraocular lens implantation using anterior segment optical coherence tomography (AS-OCT). METHODS: Seventy-eight eyes of 69 patients had...
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Utility of the Anterior Segment Optical Coherence Tomography for Measurements of Central Corneal Thickness

Shim HS, Choi CY, Lee HG, Kim MJ, Tchah HW

  • KMID: 2337584
  • J Korean Ophthalmol Soc.
  • 2007 Dec;48(12):1643-1648.
PURPOSE: To demonstrate the capability of anterior segment optical coherence tomography (OCT), to evaluate central corneal thickness (CCT) and to compare the results with those by Orbscan II and standard...
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Epidemiologic Studies of Keratoplasty in Korea

Choi SH, Lee YW, Kim HM, Yang SM, Hong JU, Yoon KC, Chung ES, Tchah HW, Jin KH, Cho HT, Joo CK, Kim EG, Shyn KH, Lee DH, Choi TH, Lee JS, Kim WS, Her J, Wee WR, Kim MK, Lee SB, Kim JC, Kim HJ, Lee HK, Kim JD, Park WC, Jeong SG, Yoon TJ

  • KMID: 2337319
  • J Korean Ophthalmol Soc.
  • 2006 Apr;47(4):538-547.
PURPOSE: To report an epidemiologic study of keratoplasty in which we analyze basic data of corneal transplants and corneal donations in Korea. METHODS: From June 2004 through October 2004, questionnaires were...
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Clinical Comparison of Laser Ray Tracing Aberrometer and Shack-Hartmann Aberrometer

Jeong JH, Kim MJ, Tchah HW

  • KMID: 2210621
  • J Korean Ophthalmol Soc.
  • 2006 Dec;47(12):1911-1919.
PURPOSE: To compare ocular aberrations measured with a laser ray tracing aberrometer (iTrace(R), Tracey technology) or a Shack-Hartmann aberrometer (Zywave(TM), Bausch & Lomb). METHODS: A total of 68 eyes were included...
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Comparison of the Phaco Chop and the Mini Chop Methods in Cataract Surgery

Kim DS, Kim MJ, Kim JY, Tchah HW

  • KMID: 2337214
  • J Korean Ophthalmol Soc.
  • 2005 Nov;46(11):1780-1785.
PURPOSE: To compare effective phacoemulsification time (EPT), the severity of corneal swelling and corneal endothelial cell density after cataract surgery between the phaco chop method and the mini chop method....
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Lamellar Keratoplasty and Restoration of Traumatic Dislocation of LASIK Flap Using Human Fibrin Adhesive

Lim TH, Kim MJ, Kim TI, Tchah HW

  • KMID: 2207952
  • J Korean Ophthalmol Soc.
  • 2005 Oct;46(10):1741-1746.
PURPOSE: To report two cases of sutureless corneal surgery performed with human fibrin sealant: lamellar keratoplasty and revision of traumatic LASIK flap dislocation. METHODS: In one case, lamellar keratoplasty was...
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Chemical Burns of the Cornea Due to Soda Lime Used for Line Marking on the Playground

Seong MC, Kim MJ, Tchah HW

  • KMID: 2207951
  • J Korean Ophthalmol Soc.
  • 2005 Oct;46(10):1737-1740.
PURPOSE: The hydrated form of lime used for marking lines on the ground is a corrosive alkali. The harmful effects of lime are well known, and chemical burns of human...
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Research on the Actual Educational Condition of Contact Lens in Korean Ophthalmology Residency Training Hospitals

Choi TH, Kim HM, Tchah HW, Kim JC, Kim MS, Lee HB, The Korean Contact Lens Study Society

  • KMID: 2337137
  • J Korean Ophthalmol Soc.
  • 2004 Sep;45(9):1438-1445.
PURPOSE: The purpose of this study is to determine the actual educational condition of contact lenses in Korean ophthalmology residency training hospitals. METHODS: A questionnaire survey about the educational condition...
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