Brief Video explanation here http://www.screencast.com/t/vXxhEt69uG0
Ciba Vision has launched it’s long awaited Dailies Total 1 soft daily disposable contact lenses. Available for now only in what they refer to as their core range, -0.50 to -10.00 dioptres. Heralded as a new era in contact lenses and perhaps it is. The well establish market leader has been those contact lenses manufactured with silicone hydrogel, and while this material offered superior oxygen transmission than silicone contact lenses it had a low water content. Oxygen passes easily through water and keeps the cornea healthy, the eyes clear and white. Ciba Vision have taken this low water content silicone hydrogel material and sandwiched it between a front and back layer of water.
Boosting the lens to over 80% water contact which as they say launches a “new era”.
This new contact lens is not being called a silicone hydrogel but the first “water gradient” contact lens. Embedded in the double water layers is a lubricating surface gel, which further attracts water and further enhances the comfort of the lens. Initially Dailies Total 1 will only be available in minus powers from -0.50 up to -10.00. It is been made in only one size 8.5 and will have an overall diameter of 14.1 mm.
Who is this lens aimed at, in a nutshell, every daily disposable wearer. In reality, contact lens wearers who want to -be at the leading edge of technology,
-want the best and latest offering and perhaps
-find it difficult to wear their old contact lenses for the entire day.
Ciba Vision list 5 reasons to choose their new Dailies Total 1 : They are the
* First water gradient contact lens featuring an increase from 33% to over 80% water from core to surface
* Highest oxygen transmittability of any daily disposable contact lens
* Superior lubrication exceeding competitor contact lenses
* Exceptional comfort from beginning to end of day
* Satisfaction guaranteed or your money back
A recent study comparing this new Dailies Total 1 with other equivalent lenses has been carried out.
Comfort and Surface Impact
A study conducted at the University of Waterloo in Ontario (with support from CIBA Vision) uncovered an interesting finding. Many 30-day, scheduled-replacement soft contact lens wearers report decreasing comfort and visual acuity as the date for replacement approaches, but some of that perception may be subjective and not the result of the condition of the lenses.
Seventy-eight subjects were enrolled; 41 had previously reported reduced comfort and vision after wearing lenses for several weeks; 37 were asymptomatic. All wore their usual lenses for two 30-day cycles of daily wear. During one randomized cycle, the lenses were replaced with new lenses at day 28, without the knowledge of the wearers. Investigators were masked as to which cycle included the switch. Comfort and vision were graded at days one, 14, 27 and 29 in each cycle.
The data showed that comfort and vision decreased significantly with lens age in both the symptomatic and asymptomatic groups, although the overall decrease in ratings and the speed of the decrease was greater in the symptomatic group. Most interesting, masked replacement at day 28 had no significant effect on the subjects’ ratings at day 29, in either group.
Researchers at the University of Waterloo in Ontario and the School of Medicine at Deakin University in Geelong, Australia, funded by CIBA Vision, have developed a new way to rate contact lens comfort. They noted that general end-of-day ratings of comfort exclude cases in which subjects removed lenses earlier in the day due to discomfort. The new system incorporates these cases into the equation by summing comfort scores for each hour of lens wear, producing a “cumulative comfort” score.
104 Subjects wore three types of lenses: Dailies Total1; Clariti 1-Day; and 1-Day Acuvue TruEye. Each type was worn for three days. On day two, comfort ratings were recorded after four, eight and 12 hours of wear, and at the end of the day (prior to removal) whenever that occurred, using a 0-to-100 scale. Cumulative comfort was calculated using the score at each rating time, multiplied by the number of hours in the preceding segment.
OCT reveals greater changes in the limbal/scleral region following contact lens wear than in the cornea.
We are taking orders for anyone interested in trialing this new contact lens and orders for those fitted. E mail us at firstname.lastname@example.org submitting your contact lens details to arrange this or go directly to order by click on the product image.
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