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Journal of Refractive Surgery

Reena Singh, Koushik Tripathy
No abstract text is available yet for this article.
July 1, 2018: Journal of Refractive Surgery
Andrzej Grzybowski, Piotr Kanclerz
No abstract text is available yet for this article.
July 1, 2018: Journal of Refractive Surgery
Hun Lee, David Sung Yong Kang, Jin Young Choi, Byoung Jin Ha, Eung Kweon Kim, Kyoung Yul Seo, Tae-Im Kim
PURPOSE: To investigate the clinical outcomes and rotational stability following implantation of V4c toric implantable collamer lenses (ICLs) (STAAR Surgical Company, Monrovia, CA) and to analyze the factors that influence rotational stability. METHODS: In this prospective observational case series, the authors analyzed the visual outcomes and rotational stability in 52 eyes of 52 patients immediately and 3 and 6 months after implantation. Postoperative rotation was defined as the angle between the adjusted axis and alignment axis...
July 1, 2018: Journal of Refractive Surgery
José J Castro, Carolina Ortiz, José R Jiménez, Sonia Ortiz-Peregrina, Miriam Casares-López
PURPOSE: To analyze stereoscopic vision under a broad range of experimental conditions simulating small-aperture corneal inlay and monovision conditions. METHODS: A total of 10 patients participated in the study. The anisocoria generated by corneal inlays was simulated by using a small-aperture contact lens fitted on the non-dominant eye. Visual acuity, contrast sensitivity function, visual discrimination capacity (halo perception), and stereoacuity tests were performed under natural conditions or when the non-dominant eye wore the small-aperture contact lens under two conditions: induced anisocoria and induced anisocoria combined with monovision (using two add-powers: +0...
July 1, 2018: Journal of Refractive Surgery
Christian Roesler, Thomas Kohnen
PURPOSE: To evaluate which factors may influence the size of the postoperative functional optical zone after hyperopic LASIK. METHODS: Thirty-three eyes with a mean spherical equivalent of +3.55 ± 1.28 diopters (D) underwent LASIK with a Technolas 217 C-LASIK laser (Bausch & Lomb Surgical, Munich, Germany). After 1 week and 1, 4, and 12 months, the authors examined refraction, corneal refractive power by means of computerized videokeratography (Technomed C-Scan; Baesweiler, Germany), and uncorrected/corrected distance visual acuity (UDVA/CDVA)...
July 1, 2018: Journal of Refractive Surgery
Diego de Ortueta, Dennis von Rüden, Shwetabh Verma, Thomas Magnago, Samuel Arba-Mosquera
PURPOSE: To evaluate the outcomes of transepithelial photorefractive keratectomy (PRK) in moderate to high astigmatism with a non-wavefront-guided aberration-neutral ablation profile using SmartPulse allocation. METHODS: In this retrospective study, myopic patients with a preoperative cylinder of 2.00 diopters (D) or greater were analyzed at 3 months of follow-up. Transepithelial PRK treatments were performed in each patient with the Amaris 1050RS laser (SCHWIND eye-tech-solutions, Kleinostheim, Germany) creating aspheric ablation profiles by applying a SmartPulse allocation...
July 1, 2018: Journal of Refractive Surgery
Gernot Steinwender, Mehdi Shajari, Wolfgang J Mayer, Daniel Kook, Navid Ardjomand, Bertram Vidic, Thomas Kohnen, Andreas Wedrich
PURPOSE: To evaluate the possible impact of a displaced corneal apex (point of maximum curvature) on visual results and tomographic parameters after small incision lenticule extraction (SMILE). METHODS: In this retrospective evaluation, eyes with uncomplicated SMILE for myopia correction were classified in two groups based on their preoperative distance between the corneal apex and corneal vertex (corneal intercept with the patient's line of sight) of 1 mm or greater (large A-V distance) or less than 1 mm (small A-V distance)...
July 1, 2018: Journal of Refractive Surgery
Jakob Siedlecki, Nikolaus Luft, Leonie Keidel, Wolfgang J Mayer, Thomas Kreutzer, Siegfried G Priglinger, Timothy J Archer, Dan Z Reinstein, Martin Dirisamer
PURPOSE: To report the impact of increasing minimum lenticule thickness on the safety and efficacy of small incision lenticule extraction (SMILE) in low myopia up to -3.50 diopters (D). METHODS: SMILE was performed in 76 eyes of 76 patients. Thirty-eight eyes of 38 patients with low myopia were prospectively operated on with a programmed minimum lenticule thickness of 15 to 30 μm (thicker lenticule group). Thirty-five eyes suitable for analysis were then retrospectively matched by spherical equivalent to 35 eyes operated on with a minimum standard setting of 10 μm (standard thickness group), as provided in the database of the SMILE Eyes Clinic Linz, Linz, Austria...
July 1, 2018: Journal of Refractive Surgery
David Sung Yong Kang, Hun Lee, Dan Z Reinstein, Cynthia J Roberts, Samuel Arba-Mosquera, Timothy J Archer, Eung Kweon Kim, Kyoung Yul Seo, Tae-Im Kim
PURPOSE: To investigate lenticule decentration following small incision lenticule extraction (SMILE) via the subjective patient fixation method or triple marking centration method and compare inductions of corneal higher order aberrations (HOAs) between the two methods. METHODS: This study analyzed decentration values obtained from the Keratron Scout (Optikon, Rome, Italy) tangential topography difference map of 110 eyes (110 patients) undergoing SMILE with the subjective patient fixation method (n = 55) or triple marking centration method (n = 55)...
July 1, 2018: Journal of Refractive Surgery
Cosimo Mazzotta, Simone Alex Bagaglia, Riccardo Vinciguerra, Marco Ferrise, Paolo Vinciguerra
PURPOSE: To assess the safety and efficacy of a novel pulsed-light enhanced-fluence iontophoresis corneal cross-linking (EF I-CXL) procedure in patients with progressive keratoconus. METHODS: This prospective interventional pilot study included 12 eyes of 10 patients. Iontophoresis with Ricrolin+ solution (Sooft, Montegiorgio, Italy) was used for stromal imbibition. The treatment energy dose (fluence) was optimized at 30% (from 5.4 J to 7 J/cm2 ) and ultraviolet-A (UV-A) power set at 18 mW/cm2 × 6...
July 1, 2018: Journal of Refractive Surgery
Montserrat Garcia-Gonzalez, Miguel A Teus
No abstract text is available yet for this article.
June 1, 2018: Journal of Refractive Surgery
José Lamarca, Borja Salvador-Culla, Carlos Fernández-Vega, Rafael I Barraquer
PURPOSE: To report the long-term clinical outcomes of a patient with Terrien's marginal degeneration who underwent successful peripheral corneal cross-linking (CXL) to arrest progression. METHODS: Clinical assessment included uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), corneal topography, anterior segment optical coherence tomography, ultrasonic pachymetry, corneal hysteresis, and corneal resistance factor. Eccentric epithelium-off CXL was performed in both eyes after limbal conjunctival resection...
June 1, 2018: Journal of Refractive Surgery
Bogdan Spiru, Sabine Kling, Farhad Hafezi, Walter Sekundo
PURPOSE: To investigate the biomechanical properties of the ex vivo human cornea after flap-based versus cap-based laser refractive surgery in the same donor. METHODS: In this experimental study, 11 pairs of human corneas unsuitable for transplantation were equally divided into two groups. Corneas from the right eye were treated with femtosecond laser-assisted LASIK (FSLASIK) and corneas from the left eye with small incision lenticule extraction (SMILE). Pachymetry was measured in each eye directly before laser refractive surgery...
June 1, 2018: Journal of Refractive Surgery
Jyoti Khadka, Rongrong Gao, Haisi Chen, Sifang Zhang, Qinmei Wang, Jinhai Huang, Konrad Pesudovs
PURPOSE: To assess psychometric properties of the Hong Kong Quality of Life Questionnaire (HKQ) using Rasch analysis and use it to assess cataract surgery outcomes. METHODS: The HKQ was interviewer administered to participants at baseline (preoperative) and 12 months of follow-up (postoperative). Rasch analysis was used to assess and improve psychometric properties of the HKQ using the preoperative data. The responsiveness of the HKQ was assessed on the stacked preoperative and postoperative data, reported with the effect size...
June 1, 2018: Journal of Refractive Surgery
Jeferson Lautert, Dharmil Doshi, Francis W Price, Marianne O Price
PURPOSE: To evaluate remodeling of the corneal epithelium after epithelium-off corneal cross-linking (CXL). METHODS: In this prospective single-center study, 93 eyes of 93 patients with progressive keratoconus underwent standard CXL. The maximum keratometry was assessed before and after CXL with Scheimpflug imaging, and the epithelial thickness profile across the central 5 mm of the cornea was assessed with spectral-domain optical coherence tomography anterior segment imaging...
June 1, 2018: Journal of Refractive Surgery
Soheil Adib-Moghaddam, Saeed Soleyman-Jahi, Ghazale Tefagh, Salar Tofighi, Michael A Grentzelos, George D Kymionis
PURPOSE: To compare efficacy and safety of single-step transepithelial photorefractive keratectomy (PRK) with or without mitomycin C (MMC) in patients with mild to moderate myopia. METHODS: Patients with mild to moderate myopia (≤ -5.50 diopters [D]) underwent single-step transepithelial PRK using the Amaris laser (SCHWIND eye-tech-solutions GmbH, Kleinostheim, Germany). Total ablation depth (epithelium and stroma) was 160 μm or less. The right eye of each patient was treated with 0...
June 1, 2018: Journal of Refractive Surgery
Nikolaus Luft, Ricarda G Schumann, Martin Dirisamer, Daniel Kook, Jakob Siedlecki, Christian Wertheimer, Siegfried G Priglinger, Wolfgang J Mayer
PURPOSE: To assess the wound healing, inflammation, and tissue ultrastructure in the human corneal stroma after small incision lenticule extraction (SMILE) and femtosecond laser-assisted LASIK (FS-LASIK). METHODS: Sixteen corneoscleral discs of 16 human donors unsuitable for corneal transplantation were obtained from an eye bank. Eight eyes underwent SMILE with -5.00 diopters (D) of myopic correction; in 3 of them the lenticule was not extracted. Further 5 donor corneas were subjected to FS-LASIK with -5...
June 1, 2018: Journal of Refractive Surgery
Huamao Miao, Xiu Liu, Mi Tian, Jing Zhao, Xuejun Fang, Xingtao Zhou
PURPOSE: To investigate changes in intraocular scattering and Bowman's layer microdistortions after femtosecond laser small incision lenticule extraction using the continuous curvilinear lenticulerhexis technique (SMILE-CCL). METHODS: In this prospective study, 93 eyes of 93 patients (44 women, 49 men) were treated with SMILE-CCL. Mean age was 26.09 ± 4.39 years and mean spherical equivalent was -6.31 ± 2.16 diopters. The Objective Scatter Index (OSI) was examined with an objective optical quality analysis system...
June 1, 2018: Journal of Refractive Surgery
Sepehr Feizi, Siamak Delfazayebaher, Mohammad Ali Javadi
PURPOSE: To directly measure internal astigmatism and evaluate its agreement with posterior corneal astigmatism in pseudophakic eyes. METHODS: This prospective study enrolled 32 eyes of 32 patients (18 women, 56.3%) who underwent phacoemulsification with implantation of a non-toric monofocal intraocular lens (IOL). Two months postoperatively, posterior corneal astigmatism was measured using a Pentacam Scheimpflug analyzer (Oculus Optikgeräte GmbH, Wetzlar, Germany)...
June 1, 2018: Journal of Refractive Surgery
Furong Luo, Xuan Bao, Yingyan Qin, Min Hou, Mingxing Wu
PURPOSE: To evaluate the long-term effect of glistenings and surface light scattering of intraocular lenses (IOLs) on visual and optical performance after cataract surgery. METHODS: Pseudophakic eyes that underwent standard phacoemulsification and two types of hydrophobic acrylic spherical IOL implantation without complications for at least 5 years were included in this retrospective study. Participants were divided into the glistenings, surface light scattering, and control groups according to the current condition of the IOLs...
June 1, 2018: Journal of Refractive Surgery
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