Eyeworld

In the journal: October 2019 Phakic intraocular lens for the correction of hyperopia: a review Abdulaziz Alshamrani, MD, Saad Alharbi, MD A literature review pulled together safety and efficacy data for phakic intraocular lens (pIOL) correction of hyperopia and hyperopic astigmatism, finding that current options on the market are both safe and effective. Anterior chamber iris-fixated pIOLs and posterior cham- ber implantable collamer lenses (ICL) are the current options for hyperopia and hyperopic astigmatism correction. In the literature review, the authors noted no serious complications and wrote that pIOLs "may be the optimal refractive surgery for the correction of high hyperopia. The accuracy of thick-lens intraocular lens power calculation based on cutting-card or calculated data for lens architecture Kristian Næser, MD, Giacomo Savini, MD As the authors of this retrospective case series put it, "most intraocular lens (IOL) power formulas employ a thin-lens approach" to calculate effective lens position. This, they contin- ued, assumes that the total IOL power is "located in the ELP rather than … distributed on the anterior and posterior lens surfaces." The authors compared the accuracy of the Barrett Universal II, Haigis, Hoffer Q, Holladay 1, and SRK/T formulas and thick-lens formulas (Næser 1, which uses manufacturers' data, and Næser 2, which uses calculated data), the latter of which, "[relies] on anatomically and optically correct eye models." Prediction error in re- fraction was retrospectively calculated in 141 eyes that received an Alcon SN60WF IOL and "predictions made using the different formulas were optimized in retrospect by adjusting the respective constants." Both Næser thick-lens formulas were similar in accuracy and perfor- mance when compared to the thin-lens formulas. Laser-assisted in situ keratomileusis flap lift for refractive enhancements after five and ten years: safety and efficacy Jorge Alió del Barrio, MD, Rana Hanna, MD, Mario Canto-Cerdan, OD, Alfredo Vega- Estrada, MD, Jorge Alió, MD Is lifting a LASIK flap for refractive enhancement safe after 5 years? Is it safe after 10 years? That's what Alió del Barrio et al. sought to evaluate in a retrospective case series study. The study included 70 eyes that had myopic (n=45), hyperopic (n=22), and presbyopic LASIK (n=3) with 12.3±3.45 years elapsing from the original LASIK procedure to the flap lift for enhancement. Flap lift was 10 years or more in 57 eyes. Mean spherical equivalent before the refractive enhancement was –1.29±1.23 in the myopic group and +0.65±1.72 D in the hyper- opic group. After the flap lift and enhancement, 88% of myopic eyes and 74% of hyper- opic eyes were 20/20 or better UCVA; 100% were at least 20/25. There was mild epithelial ingrowth in 31.43% of cases and clinically significant epithelial ingrowth in 11.42% of cases. About 4% required another flap lift due to severe epithelial ingrowth. With these findings, Alió del Barrio et al. concluded that "late flap lift for refractive enhancement 10 years or more after LASIK is a feasible alternative with good levels of efficacy and safety together with a fast visual recovery." Barry Bader, MD Died Aug. 10, 2019 Freehold, New Jersey Louis Bejec, MD Died July 25, 2019 Valparaiso, Indiana Burton Carlson, MD Aug. 4, 1962–Aug. 25, 2019 Conneaut, Ohio Silviano Matamoros, MD July 31, 1955–Aug. 13, 2019 Port St. Lucie, Florida David Meyer, MD Feb. 2, 1938–Aug. 17, 2019 Memphis, Tennessee Michael Rotberg, MD Sept. 2, 1954–June 13, 2019 Charlotte, North Carolina Glasier Somerville, MD July 2, 1934–July 28, 2019 Ontario, Canada Walter Stern, MD Aug. 8, 1944–Aug. 6, 2019 San Mateo, California Dennis Stoler, MD March 19, 1945–Aug. 9, 2019 Boxford, Massachusetts E. Alfred Thomas, MD 1939–Aug. 19, 2019 Shelburne, Vermont EyeWorld honors the lives of ophthalmologists who have died recently with recognition in this space. To recognize an ophthalmologist here, send the name, birth date, death date, and location to liz@eyeworld.org. In memoriam

• Blank Page
• Blank Page (1)