User’s Guide - Premium Optics

1 user s GuideTRIVEXTMLENS MATERIAL user S GUIDE2 Table of is Trivex Lens Material?Introduction .. 3 The History .. 4 The Technical Features .. Eyecare Professional s Guide to Lenses Made from TrivexMaterialWhy Prescribe? .. 10 Dispensing Tips .. Laboratory s Guide to Lenses Made from TrivexMaterialSurfacing and Finishing .. 22 Tinting .. 30 Drilling .. AvailabilityAvailability Chart.. 36 Contact List.. 39 Welcome to the world of possibilities made available through Trivex lens material the first to offer a combination of superior Optics , impact resistance and ultra-lightweight qualities in asingle lens material.

2 Trivexlens material gives patients the attributes they want while delivering the advanced opticalperformance demanded by eyecare help you to effectively prescribe, recommend andprocess lenses made from Trivexmaterial, the knowledge-able professionals at PPG Industries Optical Materials Grouphave created this comprehensive Users Guide . The guideincludes sections on the history of Trivexmaterial and itstechnical properties. Special sections give advice on recommending lenses made from Trivexmaterial and tips for dispensing. The Laboratory section features tips on surfacing and finishing, tinting and drilling lenses made from Trivexmaterial for rimless eyewear.

3 Laboratories and eyecare professionals with in-officeedging equipment can also refer to our educational CD-ROMs entitled, The Trivex Material Edge, Volumes Iand II for tips and instructions on how to edge lenses madefrom Trivexmaterial using a variety of state-of-the-art edgersas well as popular edgers manufactured and sold beforeTrivexmaterial was introduced. These videos can be viewedfrom our Web site: you have any questions, please don t hesitate to contact your lens distributor for further assistance or more behalf of all of us at PPG s Optical Materials Group,I thank you for your support in making Trivexlens materialthe material of choice for your ,Christine CamsuzouGeneral ManagerPPG Optical MaterialsMonroeville, PATRIVEXTMLENS MATERIAL user S GUIDE3 IntroductionOriginally developed as visual armor for the military.

4 PPG Industries adapted the plastics technology in 2001 for use in the ophthalmic industry and called it Trivexlens material because of itsunique tri-performance entirely new category, Trivexmaterial was the first to offer the combination of excellent Optics , strengthcharacteristics and ultra-lightweight qualities in a single lens material. The growth in demand for lenses made from Trivexmaterial around the world has been unprecedented. Thisrapid acceptance is a testimony to the material s exceptionalproperties. Eyecare professionals have discovered that theycan rely on Trivexmaterial, and patients are experiencing its valuable package of the attributes of Trivexmaterial make it anappealing choice for a variety of patients, manufacturingand distribution partners are continually expanding optionsin lens types and designs, and new partners are comingonboard.

5 As the number of lens lines increases in eachcountry, and as availability expands to new countries, thegrowth trend for Trivexlens material is expected to remainstrong into the made from Trivexmaterial provide sharp vision, protection and MATERIAL user S GUIDE4 The History of Trivex Lens MaterialYYeeaarrTThhee HHiissttoorryy ooff TTrriivveexxLLeennss MMaatteerriiaall2001 PPG develops Trivexmaterial for Vision Care launches new Phoenix lenses in the Optics launches Trilogy lenses in the awarded Optical Laboratories Association Award of Excellence in the Best in Lens Materials launches PNX lenses in introduces Trilogy lenses in Optical Group offers Excelite TVX brand of lenses in Europe and Optics introduces Trinity double aspheric lenses.

6 Representing the foray of Trivexmaterial into the Latin America Optical begins marketing Excelite TVX lenses in the Optical markets its Genesis lenses in Trivexmaterial in Europe and the Optical Company launches its line of Aris lenses madefrom Trivexmaterial in single vision, trifocals and D28 American Optometric Association (AOA) recognizes Trivexmaterial with their Seal of Acceptance for Ultraviolet Absorbers/Blockers. 2006 Signet Armorlite begins marketing KODAK Concise and Precise Lenses made with MATERIAL user S GUIDE5 Timeline for TrivexMaterialThe technical features of Trivexoptical lens materialprovide superior benefits to your patients.

7 Once youunderstand them, you will appreciate why lensesmade from Trivexmaterial represent the best choice for nearly every one of your is a urethane-based pre-polymer. In 2001, PPG developed and refined it for use as an ophthalmic lens material. Lenses made from Trivexmaterialare cast in molds using a special machine and thermallycured. The tri-performance properties of thematerial providefor crisp and clear,strong and safe,light and thin lenseswhen compared to other materialscurrently sunique propertiesmake it an ideallens material fornearly every eyeglass is a review of the technicalfeatures of Trivexmaterial as measured underrecognized indus-try standards foroptical MMaatteerriiaall TTeecchhnniiccaall PPrrooppeerrttiieessOOppttiiccaall TTeessttssMMeetthhooddVVaalluueessAbbe (d-line)

8 ASTM D54243 - 45% TransmittanceASTM - high velocityimpact testImpactFDA drop ballPassUV cut-offDetemined using aCary 4000 UV-Visspectrophotometer394 nmUV protectionDetemined using aCary 4000 UV-VisspectrophotometerBlocks 100% of UVAand UVB Chemical ResistanceISO 175 PassDensity (g/cm3) @ 25 CASTM - Index (d-line) @ 20 CASTM - Index (e-line) @ 20 CASTM - MATERIAL user S GUIDE6 The Technical Features of Trivex Lens MaterialTHE CRISP AND CLEAR FEATUREAbbe ValueAbbe value is a measureof the dispersion of lightthrough a lens into its colorelements.

9 This dispersion isknown as the chromaticaberration. Wearers of lenses with a higher level of chromatic aberration cansuffer from a distortion ofimages viewed through the lenses. The higher the Abbevalue assigned to a lens material, the lower the chromaticeffect and the lower the possibility of visual distortion. Lenses made from Trivexmaterial have an Abbe valueranging from 43 to 45. Compared to polycarbonate with an Abbe value of 30 and high index materials with Abbevalues of 32 to 34, the high Abbe values of Trivexmaterialmean that color aberration is virtually undetectable bypatients who wear lenses made from Trivexmaterial, even with higher powered lens prescriptions.

10 Percent TransmittanceAs light travels through a lens, a certainpercentage of that light is lost throughabsorption and reflection at each air-to-surface interface. The amount of originallight available to the eyeglass wearer bythe time it exits the lens will vary dependingon the quality of the lens material and typeand amount of anti-reflection coatingsapplied to the lens surface. This is animportant factor that directly affects theactual brightness of an observed term used to describe this percentageof light that is not lost is transmittance, and for most qualityoptical lenses this figure will usually be above 90 material has one of the highest transmission levels of all commonly utilized lens materials at This means that patients will enjoy sharp.