Eyeworld

EW NEWS & OPINION 22 June 2017 Presentation spotlight by Stefanie Petrou Binder, MD, EyeWorld Contributing Writer on manifest refraction, the target refraction was emmetropia, and no patients had deliberate overcorrec- tions. One randomly selected eye per patient was analyzed, including a follow-up of at least 6 months after treatment. Refractions were acquired by subjective refraction. The LASIK surgeries involved the preparation of mechanical flaps using an automated sub Bowman's keratomileusis (SBK) linear microker- atome (SBK 90 µm; Moria, Antony, France). All ablations were carried out using the Allegretto excimer laser platform (Alcon, Fort Worth, Texas) with eye tracking (250 Hz), with ablations centered on the visu- al axis (first Purkinje image), which is recommended in hyperopic eyes with relative large-angle kappa. The indications for retreatment includ- ed post-LASIK patients who were dissatisfied with their uncorrected distance visual acuity (UDVA) but hyperopes who are hit with the full weight of their hyperopia once pres- byopia sets in. In a retrospective study of LASIK retreatment between May 2014 and October 2015, investigator Andreas Frings, MD, Department of Oph- thalmology, University Hospital Düsseldorf, Germany, evaluated the efficacy, predictability, and safety of LASIK retreatment based on manifest refraction in eyes with hyperopia and compound hyper- opic astigmatism. He showed that retreatment after hyperopic LASIK in eyes with a preoperative difference between cycloplegic and manifest refraction of 1.00 D or less resulted in higher efficacy, predictability, and safety when the surgery was based on manifest refraction. "Treatment results of LASIK for hyperopia are less predictable compared to those of myopic eyes. A recently published large-scale study 1 identified hyperopia as the parame- ter that demonstrated the strongest association with retreatment after excimer laser refractive surgery. The purpose of this study was thus to evaluate the efficacy, predictability, and safety of LASIK retreatment based on manifest refraction in eyes with hyperopia and compound hy- peropic astigmatism," Dr. Frings said during a presentation of his poster at the 21st Winter Meeting of the Euro- pean Society of Cataract & Refractive Surgeons in Maastricht, Holland. Study parameters The data used in the study were re- trieved from the Hamburg Refractive Database, University Hospital Ham- burg, Care Vision Refractive Centers, Germany, and focused on hyper- opic patients with a preoperative difference between cycloplegic and manifest refraction of 1.00 D or less. In these patients, LASIK was based German LASIK specialist shares the benefits of hyperopic LASIK retreatment through a retrospective review and defines safe inclusion criteria H yperopic LASIK correction in patients with moderate to higher degrees of hy- peropia presents a greater challenge in maintaining the high measures of predictabil- ity and reliability that are seen in myopic corrections. Regression can be more common after LASIK in hyperopes, and retreatments need to be carefully weighed and considered. Hyperopic patients, however, are usually satisfied with their surgical outcomes, particularly presbyopic When is a second LASIK surgery justified in hyperopic eyes? 800.354.7848 TOLL FREE IN THE USA | +1.859.259.4924 WORLD WIDE | stephensinst.com S9-2070 S9-2060 S9-2065 As we celebrate 40 years of service to the ophthalmic community, we recognize those doctors who have grown along with us. Just like our instruments, our reputation for value, service and reliability has been crafted to last a lifetime. "I have used Stephens ophthalmic instruments since I went into practice—forty years ago. When I need new microsurgical instruments, I look to Stephens first." JOHN E. DOWNING, MD Bowling Green, Kentucky © 2017 Stephens Instruments. All rights reserved.

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