Eyeworld

EW NEWS & OPINION 11 August 2011 Rhein Fire & Ice Mask Product #85-9005 s &OR (EAT 4HERAPY 0LACE )T )N ! -ICROWAVE &OR 3ECONDS 7ARM 2ELIEF ,ASTS -INUTES s &OR #OLD 4HERAPY !FTER 0LACING )N 4HE &REEZER (OURS #OOL 2ELIEF ,ASTS -INUTES s )NCLUDES #LOTH 3LEEVE &OR !DDITIONAL ,ID 0ROTECTION s %ASY 4O 5SE !ND #AN "E #LEANED !ND 2EUSED -ULTIPLE 4IMES s !VAILABLE 5NITS 0ER "OX &OR -ORE )NFORMATION #ALL 3360 Scherer Drive, Suite B, St. Petersburg, FL 33716 s 4EL s &AX %MAIL )NFO 2HEIN-EDICALCOM 7EBSITE WWW2HEIN-EDICALCOM Woman Wearing Dry Eye Heat Mask VIDEO CODE VIDEO CODE ACBB RHEIN CODE RHEIN CODE 1301 Rev.C 2:08 PM ICL vault height: Clinical evaluation of the effect of adding sulcus diameter to ICL sizing Dan Z. Reinstein, M.D., M.A.(Cantab), F.R.C.S.C., F.R.C.Ophth., Carlo Lovisolo, M.D., Timothy J. Archer, M.A.(Oxon), Dip.Comp.Sci.(Cantab), Marine Gobbe, M.S.T.Optom., Ph.D. T he most significant complica- tions after ICL, such as anterior subcapsular cataract and pig- ment dispersion implantation, are caused by suboptimal ICL sizing. ICL sizing is normally based on the white-to-white (WTW) diameter and other external ocular biometrics. In this study, the authors described a new ICL sizing formula incorporat- ing a measure of the sulcus diameter. They described 50 myopic eyes, where sulcus diameter was measured using the Artemis very high-fre- quency (VHF) digital ultrasound (ArcScan, Morrison, Colo.), and im- plantation was based on the sulcus- based formula. They found that in 54% of eyes a different lens size was predicted by the sulcus diameter- based formula. By the sulcus diame- ter method, the mean post-op vault height measured with VHF digital ultrasound was 367±163 mi- crometers (range: 75-921 microme- ters), with 2% of eyes with vault height <90 micrometers (the thresh- old for cataractogenesis). No study eye developed cataract after 6 years of follow-up. By WTW formula, the vault height theoretically predicted would have been 142±353 microme- ters (range: 0-921 micrometers), with 36% of vault height <90 microme- ters. The authors therefore demonstrated significantly better predictability of post-op vault height by including a direct measurement of sulcus diameter into an ICL sizing formula. A longitudinal assessment of central corneal thick- ness after bilateral con- genital cataract surgery with and without IOL implantation Vaishali Vasavada, M.S., Shail A. Vasavada, D.O., M.R. Praveen, D.O., Mayuri Khamar, M.S, Abhay R. Vasavada, M.S., F.R.C.S., Rupal H. Trivedi, M.S., M.S.C.R. T his prospective, randomized, observational study was de- signed to study longitudinal changes in central corneal thickness (CCT) following congenital cataract surgery in aphakic and pseudopha- kic eyes. Eighty consecutive eyes of 40 children below 2 years of age under- going bilateral congenital cataract surgery were randomized to being left aphakic or pseudophakic. CCT was assessed pre-op and at 1 month, 1 year, and 2 years post-op. Differ- ence in percentage change in CCT at 1 month and 2 years was compared. Results: Post-op CCT was signif- icantly greater in aphakic eyes as compared to pseudophakic eyes at each follow up (P<0.05). Change in CCT from the pre-op to 1 month and 2 years post-op was greater in aphakic eyes. Our study concluded that apha- kic eyes had significantly thicker corneas as compared to pseudopha- kic eyes and that rate of change in CCT was significantly lower in pseudophakic eyes. CCT should be kept in mind when interpreting IOP in these eyes. Value of ultra-high mag- nification in ophthalmic surgery Robert Stegmann, M.D. M odifying existing magnifica- tion of ophthalmic surgery up to 250 times will increase the safety and efficacy of oph- thalmic procedures, according to Dr. Stegmann. This paper aimed to demonstrate improved diagnostic and therapeutic prognosis by using ultra-high magnification of up to 250 times during ophthalmic sur- gery. Dr. Stegmann modified his op- erating microscopes and fundus cameras to examine ophthalmic structures in real time. Those struc- tures had previously only been ex- amined histologically. In the study, more than 2,000 eyes were exam- ined for anatomical, physiological, and pathological changes. This process, according to Dr. Stegmann, will increase the success of future procedures, including those for cataracts and early glaucoma, as well as the management of trauma and visual rehabilitation. EW What, Why and How T his month's EyeWorld introduces Quick Response (QR) codes as a regular feature. These barcodes work as links to digital content on the internet. Camera-enabled smartphones, and iPads read these codes using easily available and free applications, such as QR Reader for iPhones, Barcode Scanner for Android phones, and QR Code Scanner Pro for BlackBerry smartphones. In EyeWorld, these QR codes will offer easy access to in-depth information, including surgery videos and additional articles about hot topics in ophthalmology.

• Cover