All Day Comfort
THE DIFFERENCE IS IN THE MATERIAL
The on-eye performance of the lens material you choose can provide a strong advantage for your practice, and give you valuable differentiation in the marketplace. The material should produce excellent results for the patient and the practitioner. Extreme H2O does just this. Â
Extreme H2O lenses are the result of two well known materials in the contact lens industry that were thought to be too difficult to bring together; GMA (glycerol methacrylate) and HEMA (2-hydroxyethyl methacylate). The combination was a success! The result: Ultra-hydrating materials that lose little to no water on the eye.
Material Benefits
DESIGNED FOR:
Unsurpassed on-eye comfort all day long
Increased wearing time
Crisp, stable visual acuity
Superior resistance to protein deposits
Improved ocular health
Greater Patient Satisfaction
Unsurpassed On-Eye Moisture Retention
Our GMA-HEMA copolymer contains hydroxyl (OH) groups that allow water molecules to bond tightly to the surface of the polymer, giving it outstanding water retention properties. This results in the material staying at a constant near saturation level by its strong affinity to hold and retain water, thus minimizing dehydration through its fast characteristic rehydration mechanism.Â
- Water loss throughout lens wear time is proportional to decrease lens comfort
- Water concentration gradient within lens decreases over time, increasing lens binding
- Water loss decreases oxygen diffusion during wear, increasing risk of complications
- Water retention throughout wear increases lens comfort and visual quality
- High water balance = lens stability (low hydration and fast rehydration)
- Stable water concentration throughout the day yields lens dimensional stability
- Stable oxygen diffusion during wear decreases the risk of complications associated with hypoxia (oxygen deprivation)
Water Balance
Water balance (WB) is an inherent material property described by its rates of dehydration and rehydration. As an indicator of lens behavior, the higher the WB ratio (>1) the better its ability to retain water and therefore maintain its dimensional stability. Extreme H2O has a water balance value five times greater than most lenses*.
Water content verses relative water balance values as descriptive parameters in hydrogels
LENS MATERIAL
Crofilcon A
Polymacon
Balafilcon
Heficlon A
Hioxifilcon B
Etafilcon
WATER CONTENT
38%
38%
36%
45%
49%
59%
RELATIVE WB RATIO
0.9
1.0
1.4
1.5
3.4
2.5
LENS MATERIAL
Mathafilcon A
Hioxifilcon A
Omafilcon
Xylofilcon A
Atlafilcon
Lidofilcon
WATER CONTENT
57%
59%
59%
62%
64%
70%
RELATIVE WB RATIO
2.1
5.5
1.5
0.9
1.1
1.5
*p-GMA/HEMA Benz Research Copolymers
Outstanding Resistance to Deposits
Hioxifilcon is made with a group 2 non-ionic material that has a very low protein uptake, is dimensionally stable and not susceptible to pH or temperature changes. In contrast, inonic materials are known for their fast protein uptake, pH sensitivity and a greater effect of temperature on lens parameter changes.Â
Differentiate your practice with improved on-eye lens
performance that patients can see and feel. Complete the form below to get started with Extreme H2O.
*p-GMA/HEMA Benz Research Copolymers