Eyeworld

11 EW NEWS & OPINION May 2016 A SCRS is pleased to an- nounce its new Center for Learning, which officially launched in early May during the ASCRS•ASOA Symposium & Congress in New Orleans. The ASCRS Center for Learning is the physician's source for the most current and relevant anterior segment content, and it's just a click away at ascrs.org/learn. The Center for Learning is the result of reorganizing and restructuring the website's abundant multimedia educational content—including videos, podcasts, webinars, Clinical Committee reports, captured meet- ing sessions, posters, handouts, CME activities, and more—into 1 central- ized location for easy access. Online learning is not a new concept—and certainly not new to ASCRS—but the sheer volume of clinical content previously found in several areas of the society's website meant that although available, it wasn't always easy to find. As part of the society's ongoing efforts to pro- vide its members with information that is relevant, timely, and easy to navigate, the Center for Learning became a reality. The Center for Learning offers a significant improvement for users, especially in terms of quickly find- ing relevant ASCRS clinical content. This has been achieved through improved filtering and search capabilities. Looking for something specific? The Center for Learning gives physicians the ability to search and filter content by type, subspe- cialty, meeting and session, surgical topic, Clinical Committee, date, and availability. Kerry Solomon, MD, ASCRS president, is excited about the fin- ished product, which he unveiled at In the journal . . . Epithelium-on corneal collagen crosslinking for management of advanced keratoconus Shihao Chen, Tommy C.Y. Chan, FRCS, Jia Zhang, Ping Ding, Jason C.K. Chan, MB BS, Marco C.Y. Yu, PhD, Yini Li, MD, Vishal Jhanji, MD, Qinmei Wang, MD In this prospective case series, investigators reported on how patients fared with tetracaine-enhanced epithelium-on corneal collagen cross- linking for keratoconus. The 21 bilateral keratoconus patients in the study received collagen crosslinking in the worse eye, while the other was left untreated. At the 12-month mark, investigators found that post- operative uncorrected distance visual acuity had improved significantly. From 6 to 12 months corrected distance visual acuity also improved. While preoperatively patients had a median maximum K reading of 62.7, postoperatively this decreased by 1.63 D. Investigators concluded that for patients with advanced keratoconus, use of epithelial-on colla- gen crosslinking is an effective treatment option. Also, a correlation was found between the change in maximum K over 6 to 12 months and the initial preoperative readings, leading investigators to further conclude that a greater corneal flattening with the treatment is linked to a higher preoperative maximum K reading. Nanosecond laser-assisted cataract surgery: Endothelial cell study Ivan Tanev, PhD, Vesselin Tanev, DMSc, Anastasios John Kanellopoulos, MD Can a new coaxial nanosecond laser-assisted cataract surgery procedure help to preserve corneal endothelial cell structure after lens removal? In a prospective study, investigators compared ultrasound phacoemul- sification removal results in one eye to those with the nanosecond laser-assisted results in the other for cataracts with a grade of nuclear opalescence (NO) 3 to NO 4. Preoperatively, the 82 eyes had a mean endothelial cell density of 2,517 cells per mm 2 . Meanwhile, at the 2-year postoperative mark, the ultrasound group had a mean endothelial cell density of 2,587 cells per mm 2 while the laser group had 2,521 cells per mm 2 . When it came to hexagonal cells, preoperatively the mean percentage was 42.3%, while at the 2-year postoperative mark this was 37.74% for the ultrasound group and 42.8% for the laser group. In- vestigators concluded that for endothelial cell structure preservation, nanosecond laser-assisted phacoemulsification had advantages over the traditional ultrasound approach. Sixteen-year follow-up of hyperopic laser in situ keratomileusis Reena Dave, FRCOphth, David P.S. O'Brart, MD, Vijay K. Wagh, FRCOphth, Wei S. Lim, MB BChir, Parul Patel, BSc, Connan Tam, MCOptom, Jennifer Lee, MCOptom, John Marshall, PhD With this prospective study, the aim was to consider how hyperopic LASIK fared over the long term. The 33 eyes included had a mean preoperative spherical equivalent of +3.74 D. Investigators found that the mean spherical equivalent at the 12-month mark was +0.28 D, by 5 years had moved to +0.84 D, and by 16 years had progressed +1.47 D to a mean of +1.74 D. Corrected distance visual acuity at 16 years remained unchanged, and uncorrected distance visual acuity improved. In one eye there was a loss of corrected distance acuity of 2 lines, but keratometry was stable for all, and there was no ectasia. The conclusion reached was that between 1 and 16 years following hyperopic LASIK, hyperopic drift is seen with limited efficacy remaining, but there were no issues with sight-threatening complications. May 2016 by Tami O'Brien ASCRS•ASOA Copywriter For surgeons, by surgeons: ASCRS launches Center for Learning continued on page 12 ASCRS update

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