Book a Consultation Clinic Finder HOME ABOUT CLINICAL PAPERS Clinical papers & publications In line with our strict clinical governance standards, Optical Express regularly publishes peer review articles, allowing all clinicians in the field to benefit from our knowledge and allowing us to give something back to the wider ophthalmological community. Intraocular lenses papers Laser eye surgery papers General papers Which area of research are you interested in? Intraocular lenses papers Incidence of Intraoperative and Early Postoperative Adverse Events in a Large Cohort of Consecutive Refractive Lens Exchange Procedures Julie M. Schallhorn, Steven C. Schallhorn, David Teenan, Stephen J Hannan, Martina Pelouskova and Jan A. Venter | December 2019 To evaluate the incidence of adverse events (AEs) in patients who underwent refractive lens exchange. View PDF Initial Experience With a New Refractive Rotationally Asymmetric Multifocal Intraocular Lens Jan A. Venter, MD; Dean Barclay, MD; Martina Pelouskova, MSc; Claire E. L. Bull, BSc | November 2017 To assess efficacy, safety, predictability, and patient satisfaction after refractive lens exchange with a new refractive rotational asymmetric multifocal intraocular lens. View PDF RLE in Younger and Older Presbyopes Steven C Schallhorn, Julie M Schallhorn, Martina Pelouskova, Jan A Venter, Keith A Hettinger, Stephen J Hannan, David Teenan | August 2017 A comprehensive analysis of Intraocular Lens/Cataract surgery outcomes performed at Optical Express using independence. View PDF How presbyopes can benefit from the Tecnis Symfony lens Stephen J Hannan | 2016 Stephen Hannan explains how the latest diffractive intraocular lens technology offers presbyopic patients high quality vision and spectacle independence with a look at the Tecnis Symfony lens. View PDF Advanced IOL Technology for Presbyopes Stephen J Hannan | August 2016 A comprehensive analysis of Intraocular Lens/Cataract surgery outcomes performed at Optical Express using independence. View PDF Technological Advances in Intraocular Lens Surgery – Femtosecond Laser-Assisted Cataract Surgery Dasi Raju | July 2016 The Femtosecond laser–assisted cataract/ NLR surgery seems to be a safe, efficient, and reproducible procedure but more prospective randomized studies will further demonstrate the potential clinical benefits of this emerging technology. View PDF Exploring advanced IOL technology for patients with presbyopia Stephen J Hannan | May 2016 New extended range of vision IOLs offer high-quality vision to presbyopic patients, without side effects. View PDF Outcomes of excimer laser enhancements in pseudophakic patients with multifocal intraocular lens Steven C Schallhorn, Jan A Venter, David Teenan, Julie M Schallhorn, Keith A Hettinger, Stephen J Hannan, Martina Pelouskova | April 2016 The aim of this study was to assess visual and refractive outcomes of laser vision correction (LVC) to correct residual refraction after multifocal intraocular lens (IOL) implantation. View PDF NHS comparison with Optical Express clinical outcomes - intraocular lens and cataract Steven C. Schallhorn. MD | January 2016 Steve Schallhorn compares the results of an independently audited data analysis of Optical Express intraocular lens and cataract outcomes with a recently published study of NHS cataract outcomes. View PDF Visual acuity improvement in adult amblyopic eyes with an iris-fixated phakic intraocular lens: Long-term results Jan A. Venter, MD, Martina Pelouskova, MSc, Steven C. Schallhorn, MD, Barrie M. Collins, Dip. Optom (SA), PhD | March 2015 To evaluate the effect of implantation of iris-fixated phakic intraocular lenses (pIOLs) (Artisan) in adult amblyopic eyes. The study analyzed data from 5 years of follow-up of amblyopic eyes that were implanted with iris-fixated pIOLs and had a preoperative corrected distance visual acuity (CDVA) of 6/15 or worse. Visual acuity, refraction, endothelial cell count, and complications were assessed. View PDF Visual outcomes and patient satisfaction with a rotational asymmetric refractive intraocular lens for emmetropic presbyopia Jan A. Venter, MD, Martina Pelouskova, MSc, Claire E.L. Bull, BSc, Steven C. Schallhorn, MD, Stephen J. Hannan, MCOptom | March 2015 To evaluate the efficacy, safety, predictability, and patient satisfaction after refractive lens exchange with a zonal refractive intraocular lens (IOL) with an inferior reading addition in emmetropic patients. View PDF Piggyback Intraocular Lens Implantation to Correct Pseudophakic Refractive Error After Segmental Multifocal Intraocular Lens Implantation Jan A. Venter, MD; Andre Oberholster, MD; Steven C. Schallhorn, MD; Martina Pelouskova, MSc | January 2014 To evaluate refractive and visual outcomes of secondary piggyback intraocular lens implantation in patients diagnosed as having residual ametropia following segmental multifocal lens implantation. View PDF Visual outcomes and patient satisfaction in 9366 eyes using a refractive segmented multifocal intraocular lens Jan A. Venter, MD, Martina Pelouskova, MSc, Barrie M. Collins, Dip.Optom (SA), PhD, Steven C. Schallhorn, MD, Stephen J. Hannan, MCOptom | October 2013 To report the effectiveness, patient satisfaction, and complication rate with a zonal refractive intraocular lens (IOL) in a high volume of patients. View PDF Outcomes and complications of a multifocal toric intraocular lens with a surface-embedded near section embedded near section Jan Venter, MD, Martina Pelouskova, MSclens_anchor | June 2013 To evaluate the refractive outcomes and rotational stability after implantation of a multifocal toric intraocular lens (IOL) with a surface-embedded near section. View PDF Predictors of Patient Satisfaction After Refractive Lens Exchange With an Extended Depth of Focus IOL Steven G. Schallhorn, MD; Keith A. Hettinger, MS; David Teenan, MD; Jan A. Venter, MD; Stephen J. Hannan, OD; Julie M. Schallhorn, MD | March 2020 To identify independent factors associated with postoperative satisfaction after refractive lens exchange with an extended depth of focus intraocular lens (EDOF IOL). View PDF Laser eye surgery papers Incidence of Intraoperative and Early Postoperative Adverse Events in a Large Cohort of Consecutive Laser Vision Correction Treatments Julie M. Schallhorn, Steven C. Schallhorn, David Teenan, Stephen J. Hannan, Martina Pelouskova, Jan A. Venter | December 2019 To evaluate the incidence of adverse events (AE) following laser vision correction. View PDF Effect of Gender and Procedure on Patient - Reported Dry Eye Symptoms After Laser Vision Correction Julie M. Schallhorn, MD, MS; Martina Pelouskova, MSc; Catherine Oldenburg, PhD; David Teenan, MD; Stephen J. Hannan, OD; Steven C. Schallhorn, MD | January 2019 This paper evaluates factors associated with the change in dry eye symptoms following Laser Vision Correction.The retrospective analysis considered 13,319 patients that underwent either LASIK or PRK (LASEK). View PDF Monovision LASIK in emmetropic presbyopic patients Michelle Y Peng, Stephen Hannan, David Teenan, Steven J Schallhorn, Julie M Schallhorn. | September 2018 To evaluate the efficacy and patient satisfaction of laser in situ keratomileusis (LASIK) monovision correction in presbyopic emmetropic patients. View PDF Monovision LASIK Versus Presbyopia-Correcting IOL:s Comparison of Clinical and Patient-Reported Outcomes Steven C. Schallhorn, MD; David Teenan, MD; Jan A. Venter, MD; Julie M. Schallhorn, MD, MS; Keith A. Hettinger, MS; Stephen J. Hannan, OD; Martina Pelouskova, MSc | July 2017 To compare clinical and quality of life, out-comes between patients who underwent monovision LASIK and refractive lens exchange. View PDF Effectiveness of an Eyelid Thermal Pulsation Procedure to Treat Recalcitrant Dry Eye Symptoms After Laser Vision Correction Craig S. Schallhorn, MD; Julie M. Schallhorn, MD; Stephen Hannan, OD; Steven C. Schallhorn, MD | 2017 To provide an initial retrospective evaluation of the effectiveness of a thermal pulsation system to treat intractable patient-reported dye eye symptoms following laser vision correction. View PDF Infectious keratitis after laser vision correction: Incidence and risk factors Julie M. Schallhorn, MD, MS, Steven C. Schallhorn, MD, Keith Hettinger, MS, Stephen Hannan, OD | April 2017 To describe the incidence and risk factors associated with microbial keratitis in a large population of laser vision correction (LVC) patients. View PDF Outcomes and complications of excimer laser surgery in patients with collagen vascular and other immune-mediated inflammatory diseases Julie M. Schallhorn, MD, MS, Steven C. Schallhorn, MD, Keith A. Hettinger, MS, Jan A. Venter, MD, Martina Pelouskova, MSc, David Teenan, MD, Stephen J. Hannan, OD | December 2016 To assess refractive and visual outcomes and postoperative complications in a large number of patients with well-controlled collagen vascular and other immune-mediated inflammatory diseases. View PDF Monovision Approach to Presbyopia Dasi Raju | December 2016 Presbyopia affects an estimated 10.4 billion people globally and, as eye care providers, we are faced with the daily challenge of finding the best solution for our presbyopic patients. There are numerous approaches to treat presbyopia, each has its own benefits and limitations. View PDF Patient-reported outcomes 5 years after laser in situ keratomileusis Steven C. Schallhorn, MD, Jan A. Venter, MD, David Teenan, MD, Stephen J. Hannan, OD, Keith A. Hettinger, MS, Martina Pelouskova, MSc, Julie M. Schallhorn, MD | June 2016 To assess vision-related, quality-of-life outcomes 5 years after laser in situ keratomileusis (LASIK) and determine factors predictive of patient satisfaction. View PDF Flap-related infections Steven Schallhorn, MD | April 2016 Corneal infection after creation of a lamellar ap is a potentially devastating complication of LASIK. As demonstrated by the steadily falling number of infectious keratitis cases following corneal refractive surgery, the risk of infection can be reduced through surgical technique, increased awareness, and proper prophylaxis. View PDF Optical Express Case Study: Options of refractive surgery Mesha Tanna | March 2016 Mesha Tanna describes a case study involving a young lawyer who wanted to stop wearing contact lenses due to lifestyle factors, demonstrating the effectiveness of iDesign Intralase Lasik. View PDF Effect of postoperative keratometry on quality of vision in the postoperative period after myopic wavefront-guided laser in situ keratomileusis Steven C. Schallhorn, MD, Jan A. Venter, MD, Stephen J. Hannan, OD, Keith A. Hettinger, MS, David Teenan, MD | December 2015 To determine whether postoperative keratometry is a predictor of patient-reported satisfaction and night-vision phenomena after wavefront-guided myopic laser in situ keratomileusis (LASIK). View PDF Flap lift and photorefractive keratectomy enhancements after primary laser in situ keratomileusis using a wavefront-guided ablation profile: Refractive and visual outcomes Steven C. Schallhorn, MD, Jan A. Venter, MD, Stephen J. Hannan, OD, Keith A. Hettinger, MS, David Teenan, MD | November 2015 To analyze results of wavefront-guided laser vision correction retreatments performed either by lifting the original flap or by surface ablation over the flap. View PDF Outcomes of wavefront-guided laser in situ keratomileusis using a new-generation Hartmann-Shack aberrometer in patients with high myopia Steven C. Schallhorn, MD, Jan A. Venter, MD, Stephen J. Hannan, OD, Keith A. Hettinger, MS | September 2015 To evaluate refractive and visual outcomes of wavefront-guided laser in situ keratomileusis (LASIK) to correct high myopia using a new Hartmann-Shack aberrometer. View PDF Clinical outcomes of wavefront-guided laser in situ keratomileusis to treat moderate-to-high astigmatism Steven C Schallhorn, Jan A Venter, Stephen J Hannan, Keith A Hettinger | 13th July 2015 The purpose of this study was to evaluate the refractive and visual outcomes of wavefront-guided laser in situ keratomileusis (LASIK) in eyes with myopic astigmatism and cylindrical component 2.0 diopter (D). View PDF Wavefront-Guided Photorefractive Keratectomy with the Use of a New Hartmann-Shack Aberrometer in Patients with Myopia and Compound Myopic Astigmatism Steven C. Schallhorn, Jan A. Venter, Stephen J. Hannan, and Keith A. Hettinger | April 2015; revised July 2015 To assess refractive and visual outcomes and patient satisfaction of wavefront-guided photorefractive keratectomy (PRK) in eyes with myopia and compound myopic astigmatism, with the ablation profile derived from a new Hartmann-Shack aberrometer. View PDF Factors that Influence Intraocular Pressure Changes after Myopic and Hyperopic LASIK and Photorefractive Keratectomy Julie M. Schallhorn, MD, MS, Steven C. Schallhorn, MD, Yvonne Ou | March 2015 To describe the factors that influence the measured intraocular pressure (IOP) change and to develop a predictive model after myopic and hyperopic LASIK and photorefractive keratectomy (PRK) in a large population. The Optical Express database was queried for all subjects. Data were extracted on procedure specifics, preoperative central corneal thickness (CCT), IOP (using noncontact tonometry), manifest refraction, average keratometry, age, gender, and postoperative IOP at 1 week, 1 month, and 3 months. A linear mixed methods model was used for data analysis. View PDF Non-penetrating Femtosecond Laser Intrastromal Astigmatic Keratotomy in Patients With Mixed Astigmatism After Previous Refractive Surgery Jan Venter, MD; Rodney Blumenfeld, MD; Steve Schallhorn, MD; Martina Pelouskova, MSc | November 2013 To report the outcomes of the correction of mixed astigmatism with non-penetrating femtosecond laser intrastromal astigmatic keratotomy in patients with previous refractive surgery. View PDF The Role of the Mesopic Pupil on Patient-Reported Outcomes in Young Patients With Myopia 1 Month After Wavefront-Guided LASIK Steven Schallhorn, MD; Mitch Brown, OD; Jan Venter, MD; Keith Hettinger, MS; Stephen Hannan, OD | November 2013 To determine the relationship between lowlight pupil size and patient-reported outcomes 1 month after wavefront-guided LASIK in young patients with myopia. View PDF Early Clinical Outcomes of Wavefront-Guided Myopic LASIK Treatments Using a New-Generation Hartmann-Shack Aberrometer Steven Schallhorn, MD; Mitch Brown, OD; Jan Venter, MD; David Teenan, FRCS(Ed), FRCOphth; Keith Hettinger, MS; Hiromi Yamamoto, BS | August 2013 To provide an initial retrospective evaluation of early postoperative outcomes after wavefront-guided myopic LASIK using a new-generation Hartmann-Shack wavefront sensor. View PDF The Effect of Procedure Room Temperature and Humidity on LASIK Outcomes Michael I. Seider, MD, Stephen D. McLeod, MD, Travis C. Porco, PhD, MPH, Steven C. Schallhorn, MDlens_anchor | March 2013 To determine whether procedure room temperature or humidity during LASIK affect refractive outcomes in a large patient sample. View PDF Non-penetrating Femtosecond Laser Intrastromal Astigmatic Keratotomy in Patients With Mixed Astigmatism After Previous Refractive Surgery Jan Venter, MD; Rodney Blumenfeld, MD; Steve Schallhorn, MD; Martina Pelouskova, MSc | December 2012 To report the outcomes of the correction of mixed astigmatism with non-penetrating femtosecond laser intrastromal astigmatic keratotomy in patients with previous refractive surgery. View PDF Early Flap Displacement after LASIK Gerry Clare, FRCOphth, Tara C. B. Moore, PhD, Claire Grills, PhD, Antonio Leccisotti, MD, PhD, Johnny E. Moore, FRCOphth, PhD, Steve Schallhorn, MD | September 2011 To evaluate the risks of flap displacement after LASIK. View PDF One-month Outcomes of Wavefront-guided LASIK for Low to Moderate Myopia With the VISX STAR S4 Laser in 32,569 Eyes Steven C. Schallhorn, MD; Jan A. Venter, MD | July 2009 To determine the safety and effi cacy of wavefront-guided LASIK for the correction of low to moderate myopia, as performed by surgeons employed by Optical Express, a large corporate provider. View PDF Femtosecond Laser Versus Mechanical Microkeratome: A Retrospective Comparison of Visual Outcomes at 3 Months Mesha Tanna, BSc(Hons), MCOptom; Steven C. Schallhorn, MD; Keith A. Hettinger, MS, MBA | July 2009 To compare the visual outcomes of LASIK procedures in which fl aps were created with a femtosecond laser (IntraLase FS 60Hz, Abbott Medical Optics [AMO]) to procedures in which flaps were created with a mechanical microkeratome (Moria Evo3 One Use-Plus, Moria SA). View PDF Effect of Keratometry on Visual Outcomes 1 Month After Hyperopic LASIK Jill J. Young, BSc(Hons), MCOptom; Steven C. Schallhorn, MD; Mitchell C. Brown, OD; Keith A. Hettinger, MS, MBA | July 2009 To determine whether preoperative, postoperative, or change in keratometry can be used to predict visual outcomes in hyperopic LASIK. View PDF An Evidence-based Approach to Patient Selection for Laser Vision Correction Mitchell C. Brown, OD | July 2009 To describe the process used by Optical Express, a large corporate refractive surgery provider, to develop evidence-based patient selection guidelines for laser vision correction. View PDF Satisfaction of 13,655 Patients With Laser Vision Correction at 1 Month After Surgery Mitchell C. Brown, OD; Steven C. Schallhorn, MD; Keith A. Hettinger, MS, MBA; Stephanie E. Malady, BS | July 2009 To assess the level of laser vision correction patient satisfaction achieved by a large corporate provider of refractive surgery. View PDF Three-Month Outcomes of Laser Vision Correction for Myopia and Hyperopia in Adults With Amblyopia Xi Liu, Steven C. Schallhorn, Stephen J. Hannan, David Teenan, Julie M. Schallhorn | June 2020 To evaluate the visual outcomes of laser vision correction in adults with myopic and hyperopic amblyopia. View PDF General papers Informed consent in refractive surgery: in-person vs telemedicine approach Steven C Schallhorn, Stephen J Hannan, David Teenan, Martina Pelouskvoa, Julie M Schallhorn. | December 2018 The aim of this study was to compare the quality of consent process in refractive surgery between patients who had a preoperative consent discussion with the surgeon using a telemedicine approach and those who had face-to-face discussion. View PDF Role of the treating surgeon in the consent process for elective refractive surgery Steven C Schallhorn; Stephen J Hannan; David Teenan; Julie M Schallhorn | November 2016 To compare patient's perception of consent quality, clinical and quality-of-life outcomes after laser vision correction (LVC) and refractive lens exchange (RLE) between patients who met their treating surgeon prior to the day of surgery (PDOS) or on the day of surgery (DOS). View PDF 2010 Laser Vision Correction: Using Biostatistics to Revolutionise Refractive Surgery Outcomes H Burkhard Dick, MD; Mitchell C. Brown, OD; Steven C. Schallhorn, MD; Joseph Colin, MD; Keith A. Hettinger, MS, MBA; John A. Vukich, MD | April 2010 Refractive surgeons everywhere can benefit from the lessons learned by Optical Express. View PDF Using an International Medical Advisory Board to Guide Clinical Governance in a Corporate Refractive Surgery Model John A. Vukich, MD | July 2009 To describe the role played by the International Medical Advisory Board (IMAB) in clinical and corporate governance at Optical Express, a corporate provider of refractive surgery. View PDF The Role of Biostatistics in the Quality Improvement of Refractive Surgery Keith A. Hettinger, MS, MBA | July 2009 To demonstrate how the large quantity of uniformly collected data available to a corporate refractive surgery provider, Optical Express, is applied to drive improvements in patient outcomes. View PDF A Complex Case Management System Provides Optimal Care for All Patients Jan A. Venter, MD; Stephen J. Hannan, MCOptom | July 2009 To describe the complex case management system developed by Optical Express, a large corporate provider of laser vision correction, and to detail the benefits this system offers for managing the surgical complications of laser vision correction. View PDF Developments in Collagen Cross-Linking Technique Mesha Tanna | June 2016 To list the function and development in Collagen Cross-Linking Techniques. View PDF Contact Us 0800 023 2020 enquiries@opticalexpress.com Our Services Laser Eye Surgery Lens Replacement Cataract Surgery Eye Health Glasses Contact Lenses Eye Tests About Us About Patient Reviews Customer Care Magazine and News Contact Us Refer a Friend Contact Centre Information Gender Pay Gap Report How to Complain Environmental Statement Open Letter Slavery and Human Trafficking Statement Corporate Careers Corporate Eye Care Information Pack Environmental, Social and Governance Optical Express Ireland Optical Express Germany Optical Express Croatia Sitemap Terms and conditions Privacy policy Cookies Company No. SC161469 | VAT No.680672418 | © Optical Express 2021 Your choice regarding cookies on this site We use cookies to optimise site functionality and give you the best possible experience. I AcceptSettings