High performance soft contact lens materials · 2018-06-05 · High performance soft contact lens...
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High performance soft contact lens materials The latest in material innovation Properties Classification Swell Factor Water Content Refractive Index Oxygen Permeability Tensile Strength Elongation to Break Modulus Contaflex GM Advance 49% Contaflex GM Advance 58% Material characteristics Filcon I 2 Filcon II 2 1.28 at 20 °C 1.36 at 20 °C 50% at 20 °C (by refractometer) 49% at 20 °C (by weight) 60% at 20 °C (by refractometer) 59% at 20 °C (by weight) 1.417 at 20 °C 1.419 at 35 °C 1.400 at 20 °C 1.403 at 35 °C 16 26 0.35 MPa 0.14 MPa 210% 140% 0.36 MPa 0.16 MPa Contamac Ltd Carlton House, Shire Hill, Saffron Walden Essex, CB11 3AU, United Kingdom T. +44 (0)1799 514800 F. +44 (0)1799 514801 E. [email protected] www.contamac.com
Transcript of High performance soft contact lens materials · 2018-06-05 · High performance soft contact lens...
High performance soft contact lens materials
The latest in material innovation
Properties
Classification
Swell Factor
Water Content
Refractive Index
Oxygen Permeability
Tensile Strength
Elongation to Break
Modulus
Contaflex GM Advance 49% Contaflex GM Advance 58%
Material characteristics
Filcon I 2 Filcon II 2
1.28 at 20 °C 1.36 at 20 °C
50% at 20 °C (by refractometer) 49% at 20 °C (by weight)
60% at 20 °C (by refractometer) 59% at 20 °C (by weight)
1.417 at 20 °C1.419 at 35 °C
1.400 at 20 °C1.403 at 35 °C
16 26
0.35 MPa 0.14 MPa
210% 140%
0.36 MPa 0.16 MPa
Contamac Ltd
Carlton House, Shire Hill, Saffron WaldenEssex, CB11 3AU, United Kingdom
T. +44 (0)1799 514800 F. +44 (0)1799 514801E. [email protected] www.contamac.com
The GM Advance material is the latest in soft lens material innovation. This material is provided in 49 % and 58 % water contents both offering lower modulus figures and therefore greater flexibility when machined to a finished soft contact lens. This quality is matched by exceptional elongation characteristics ensuring low levels of lens breakage and greater durability.
Material Benefits
• GM Advance has a lower modulus, higher tensile strength and higher elongation to break,
than other GMA base materials.
• The blend of components used in GM Advance materials provides much higher quality
lens surfaces and edges.
• GM Advance is more dimensionally stable than other GMA based materials and much
more stable than other soft lens materials.
• GM Advance resists dehydration longer and rehydrates faster than comparable materials.
• The dehydration of GM Advance is comparable to that of Polymacon and far better than
VP/PMMA based materials.
• GM Advance is available in 49 % and 58 % water contents.
High performance soft contact lens materialsThe latest in material innovation
Outstanding visual acuity
Exceptional On-Eye dimensionalstability and fit
Lenses remain fully hydratedOn-Eye
Contact lens benefits
Dehydration & Rehydration (sec. to 90 % saturation)
Polymacon38 %
200
150
100
50
0
Contaflex GMAdvance 49 %
Hioxifilcon B 49 %
Contaflex GMAdvance 58 %
Hioxifilcon A 58 %
Modulus (MPa)
Polymacon38 %
Contaflex GMAdvance 49 %
Hioxifilcon B 49 %
Contaflex GMAdvance 58 %
Hioxifilcon A 58 %
0.6
0.5
0.4
0.3
0.2
0.1
0
Dehydration Rehydration
Excellent durability
Dk levels are maintained during wear
