Optometric Management Special Edition

2015

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34 S P E C I A L E D I T I O N 2 0 1 5 • O P T O M E T R I C M A N A G E M E N T . C O M OPTOME TRIC MANAGEMENT FE ATURE NEW EVIDENCE COMPARING LUBRICITY OF THE NATURAL HUMAN CORNEA TO CONTACT LENSES CAN CL WEAR COMPARE TO NO-LENS WEAR? Tawnya Wilson, O.D., F.A.A.O. P ERHAPS OUR GREATEST CHALLENGE as clinicians is fnding a contact lens that can provide the vision correction required while being as neutral to the ocular environment as possible to truly stand up to the kind of intense wear that many of our patients re- quire. Most of us will probably think of oxygen transmissibility as one of the criteria toward achieving that goal. However, creating a lens that is nearly invisible to the eye demands more than can be achieved by oxygen transmission alone. ENDEAVORS TO MIMIC THE EYE'S NATURAL STATE Contact lens wear can interrupt the normal ocular surface homeo- stasis. Creating a scenario in which the cornea cannot discern between the lens and the eyelid and the eyelid cannot discern between the lens and the cornea, so the lens is almost invisible to the eye itself, may be helpful. 1-DAY ACUVUE TruEye Brand Contact Lenses come close to this goal by integrating HYDRACLEAR 1 Technology, a highly breathable silicone hydro- gel material with the highest levels of embedded wetting agent (poly- vinylpyrrolidone, or PVP) in the ACUVUE Brand family. Tis tech- nology mimics the mucins of the cor- nea and eyelid and helps minimize the lens-eye interaction. Tis EYE-INSPIRED Design helps patients who wear their lenses in- tensely (more than 5 days/week and 14 hours/day) keep their eyes in their natural state all day. In fact, afer 365 days of daily use by neophyte wear- ers, the lenses were clinically shown to be comparable to no-lens wear on comfort and 5 of 6 key measures of ocular health (limbal, bulbar and palpebral redness, corneal staining and neovascularization). 1 NEW FRONTIERS ON LUBRICITY RESEARCH Lubricity plays an important role in the relationship between the eye's natural surface and the surface of a contact lens. As new research illustrates, surface lubricity can be maintained in patients ft with the lenses. Tis study was conducted in an independent laboratory, where the lubricity of 1-DAY ACUVUE TruEye 0.015 0.017

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