Eyeworld

SEP 2017

EyeWorld is the official news magazine of the American Society of Cataract & Refractive Surgery.

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UPDATE 17 Award winner. The Power of A Awards recognize a select number of associations annually that distin- guish themselves with extraordinary contributions to society. "Congratulations to ASCRS and the ASCRS Foundation for their hard work and for helping to strengthen the lives of citizens in need," said Sharon Swan, FASAE, chief execu- tive officer of the American Soci- ety of Clinical Pharmacology and Therapeutics, and chair of the Power of A Awards Judging Committee. "Their initiative exemplifies how we work best when we work together and how associations have a positive influence on our everyday lives in every way." The ASCRS Foundation is hon- ored to accept the Power of A Gold Award for Operation Sight, but the real heroes who deserve this award are the surgeons, administrators, and donors who make this program possible every day. "Ophthalmologists begin their career because we care deeply about restoring sight to others," said Stephen Lane, MD, Stillwater, Minnesota, ASCRS Foundation co- chair. "This program leverages our unique expertise and helps us extend our sight-giving abilities to those in need." ASCRS members can help re- store sight to even more during the annual National Sight Week cele- bration in October. National Sight Week will take place from October 15–21, and the foundation is asking ASCRS members to either volunteer or donate, and help serve the almost 120 people currently on the Opera- tion Sight wait list. The foundation's goal is to provide 600 free cataract surgeries to those in need in celebra- tion of National Sight Week. If you have questions or would like to volunteer (www.ascrsfounda- tion.org/volunteer), contact Oper- ation Sight program coordinator Evelyn Morales at emorales@ascrs. org. To donate visit, www.ascrsfoun- dation.org/donation. EW Contact information Lane: sslane@associatedeyecare.com Zundel: nzundel@ascrs.org In the journal Combined transepithelial phototherapeutic keratectomy and conventional photorefractive keratectomy followed simultaneously by corneal crosslinking for keratoconus: Cretan protocol plus Michael Grentzelos, MD, George Kounis, MD, Vasilios Diakonis, MD, Charalambos Siganos, MD, Miltiadis Tsilimbaris, MD, Ioannis Pallikaris, MD, George Kymionis, MD In this prospective case series, investigators considered how transepithelial photo- therapeutic keratectomy (PTK) together with conventional photorefractive keratec- tomy (PRK) followed by corneal crosslinking (CXL) for keratoconus affected visual, refractive and topographic outcomes for patients. Included here were 43 keratoconus patients slated to undergo PRK followed by CXL, using the Cretan protocol plus in which transepithelial PTK was used to remove the corneal epithelium. A total of 55 eyes were included. Investigators determined that at 12 months postoperatively there was significant improvement in both mean uncorrected and corrected distance visual acuities, which went from 0.20 logMAR preoperatively to 0.08 logMAR postoperatively. Likewise, a significant improvement was seen in mean spherical equivalent, which went from preoperative –4.67 D to –2.24 D at the 12-month mark. Steep and flat ker- atometry readings improved from 50.30 D and 45.62 D preoperatively to 46.27 D and 43.46 D following the procedure. Investigators concluded that when it came to corneal stabilization and vision improvement for keratoconus patients combining transepithe- lial PTK with conventional PRK followed by simultaneous crosslinking was effective for stabilizing the cornea and improving vision. Optimized keratometry and total corneal astigmatism for toric intraocular lens calculation Giacomo Savini, MD, Kristian Næser, MD, Domenico Schiano-Lomoriello, MD, Pietro Ducoli, MD The aim for investigators in this prospective case series was to evaluate different means of measuring total corneal astigmatism for calculating optimum toric intraocular lens power. Ray tracing with the aid of a Scheimpflug camera was done preoperatively to measure total corneal astigmatism. A variety of measurements at a 3 mm diameter centered on the corneal vertex or the pupil were compared. A Scheimpflug camera and a corneal topographer were used to determine keratometric astigmatism. Investigators found that there was a 0.6 D overcorrection of with-the-rule astigmatism and a 0.3 D undercorrection of against-the-rule astigmatism with both devices. For those who had with-the-rule astigmatism, a total corneal astigmatism pupil/zone measurement showed the lowest meridional error. The lowest meridional error was achieved by the apex/zone measurement in against-the-rule eyes. Investigators concluded that when performing toric IOL calculations use of total corneal astigmatism may improve results. However, more accurate results can be attained by optimization of corneal astigmatism measurements. Cataract surgery after proton beam irradiation for uveal tumors Zeba Syed, MD, Roberto Pineda II, MD For those who have undergone prior proton beam irradiation, what are the risks asso- ciated with cataract surgery? Investigators in this retrospective case series of 29 eyes set out to determine this. They found that preoperatively 72.4% had dry eye, 24.1% had posterior synechiae, 13.8% had peripheral anterior synechiae, 10.3% had anterior capsular fibrosis, and 10.3% had iris atrophy. Issues that occurred intraoperatively included the need for trypan blue capsule staining in 37.9% of cases due to poor red reflex, a call for synechialysis in 24.1%, the need for a sub-Tenon's triamcinolone in- jection in reaction to prior inflammation in 17.2% of cases, and handling of miosis in 10.3% of cases. At the 1-year mark PCO was seen in 48.3% of cases. A pressure spike of 23 mm Hg or more as well as anterior chamber inflammation had to be dealt with in 24.1% of cases. In addition, 17.2% of cases had CME. Poor visual outcomes after cata- ract removal were linked to proximity of the initial tumor to the posterior pole. At the 1-month postoperative mark patients tended to have higher rates of anterior chamber inflammation, as well as CME, fibrinous inflammation, and PCO by 1 year. The pro- longed inflammation and fibrinous inflammation as well as CME and early PCO that occurred after cataract surgery in this population are similar to what's seen in patients with uveitis, investigators concluded. They think that to prevent such complications a steroid depot may be useful, but further research on an optimal regimen is needed. September 2017 " This program leverages our unique expertise and helps us extend our sight-giving abilities to those in need. " —Stephen Lane, MD Corrections In the Saturday, May 6, 2017 edition of EyeWorld Daily News, the Editors' note of the article "Cor- nea Day presenters focus on CXL, dry eye" incorrectly stated that Bennie Jeng, MD, has financial interests related to his presentation. The note should have stated that Dr. Jeng has no financial interests related to his presentation at Cornea Day. The article, which was also published in the July issue of Cornea Society News, has been corrected in the online versions of EyeWorld Daily News and Cornea Society News. In "Femtosecond corneal laser platforms: Offering better vision and better flap predictability than microkeratomes" in the July issue of EyeWorld, the Editors' note incorrectly stated that Karl Stonecipher, MD, has no financial interests related to his comments. The note should have stated that Dr. Stonecipher has financial interests with Alcon, Johnson & Johnson Vision, and Bausch + Lomb. EyeWorld apologizes for these errors.

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