FDA approves update to IOL master 700 to include posterior corneal measurements

Dr Titone at East Carolina Center for Sight has been selected to be one of the first in the USA to receive the new Total Keratometry upgrade for the IOLMaster 700. This will allow us to select the best possible Lens power for our cataract surgery patients.

The IOLMaster®700 from ZEISS with SWEPT Source OCT technology now allows us to directly measure the posterior corneal surface. It combines unique telecentric keratometry measurement of the anterior corneal surface with measurement of the posterior corneal surface in order to calculate Total Keratometry (TK®).

  • There are two exclusive new formulas: Barrett TK Universal II and Barrett TK Toric
The current Barrett Toric Calculator uses a unique eye model to predict the posterior corneal surface. Using Total Keratometry with the Barrett Toric Calculator would thus lead to overcompensation of posterior corneal astigmatism.
Because of this, Graham Barrett has developed two new IOL power calculation formulas: the Barrett TK Universal II for non-toric IOLs, and the Barrett TK Toric for toric IOLs. Both new formulas use posterior corneal surface measurements instead of the eye model used by the Barrett Toric Calculator
  • We Can use existing IOL calculation formulas – no need for a second device, third-party software or an online calculator
This decreases errors in manual data entry and streamlines workflow.
 

East Carolina Center for Sight where Great vision is Our Mission.

 

Preloaded IOL’s

Preloaded IOL’s have been slow to be adopted in the USA. Alcon has had the SN60 available for many years in a B cartridge and recently released it in a C. Lenstec the makers of SoftecHD received FDA approval for the SoftecHD PLI(pre loaded injector) a few months ago and expects release in the US market by the end of the summer or early fall. The system looks very well conceived and easy to use.

What’s New in Ophthalmology

Alcon announced the immediate availability of  their expanded range of  Acysof  T6 through T9   Astigmatism correcting Intra ocular lens  implants.  This means we can now correct a broad range of  Astigmatism with the lens we put in the eye at the time of cataract surgery allowing more patients to be eyeglass free after surgery!  We have been using the lower power Acrysof  Toric lenses T3-T5 with great success.  Patients with higher astigmatism needed additional surgery to fully correct vision, now most patients  can be done with the lens alone.  Patients with even higher astigmatism that could not be fully corrected at all can now be corrected with additional surgery. These new lenses correct from 2.57  to 4.11 diopters of astigmatism. You can learn more about this lens here  http://www.reclaimyourvision.com/acrysof-iq-toric-iols.aspx.

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If you are wanting better reading vision theAlcon Acrysof Restor lens has to be a great choice for your Cataract or Clear lens replacement surgery; soon the astigmatism correcting feature of the Acrysof  toric Intraocular lenses will be combined with this lens for patients with astigmatism!  Alcon just announced these lenses outside the USA, after FDA approval they will be available here. Learn more here http://www.restortoric.com/.

On the Focusing lens front (We call these Accommodating Intraocular lenses): Lenstec’s Tetraflex is an intraocular lens implant (IOL) that is used for cataract surgery.   The Tetraflex IOL accomodates to give a range of vision.  The Tetraflex is not yet FDA approved in the United States, but is currently in use in Europe.  Lenstec will also introduce Tetraflex HD after FDA approval.  Lenstec’s Softec HD is a precision monofocal lens that is already FDA approved for single focus lens replacement.  The expected advantage of the Tetraflex and Tetraflex HD over the Softec HD is a wider range of sharp vision without glasses or contact lenses for distance, computer, and reading activities.  The lens works by flexing within the eye when patients attempt to read. Dr Titone uses the SoftecHD lens by Lenstec its clarity of vision reported by patients is impressive, we are looking forward in offering the TetraflexHD to our patients when it becomes FDA approved.

Tetraflex reviews have been favorable by surgeons and patients.  Tetraflex lens in the news  Click this link to an article by a U.S. surgeon who has implanted Tetraflex as part of the FDA trials.

See the TV news story about patient who had Tetraflex IOL in Miami during U.S. FDA trials.

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The Acysof Toric, Acrysof Restor and Tetraflex costs are usually partially covered under medical insurance, there are added out-of-pocket costs compared to standard lenses. If you are seeking the best vision you can have after cataract or clear lens surgery you should consider one of the Advanced Technology lenses, speak to Dr Titone about your options or ask questions on the blog.