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Archive for August, 2007

San Jose Keratoconus Treatment Center is moving locations

Tuesday, August 28th, 2007

Beginning October 1st, 2007, Turner Eye Institute and Horizon Vision Centers will relocate the Keratoconus Treatment Center branch in San Jose. The new San Jose Keratoconus Treatment Center will be located at 50 E. Hamilton, Suite 100, Campbell, California. The telephone number is 408-374-2020.

The new Horizon and Turner Eye Institute Keratoconus Treatment San Jose branch is located in a small mall complex inside the two-story white spanish style building that fronts Hamilton Ave.


From Santa Cruz Area:

Head North on CA-17 (signs for San Jose) Take Exit 25 towards Hamilton Ave. Turner Left at creekside Way. Turner Left at E. Hamilton Ave. End at 50 E Hamilton Ave.

From San Francisco/Peninsula

Take I-280 South towards San Jose. Merge onto CA-17 South towards Santa Cruz. Take the Hamilton Exit – Exit 25. Keep right at the fork to go on E. Hamilton Ave. End at 50 E. Hamilton Ave.

From the East Bay

Take the I-880 South towards San Jose. I-880 South becomes CA-17 South. Take the Hamilton Ave exit – Exit 25. Keep Right at the fork to go on E. Hamilton. End at 50 E. Hamilton Ave.

Welcome everyone to our new location in San Jose. The San Jose Keratoconus Treatment center in Campbell will continue to provide the same advanced treatments and excellent service as all our Keratoconus Treatment locations throughout the San Francisco Bay Area, including Oakland, San Francisco, and Walnut Creek.

Emerging technology for keratoconus

Thursday, August 23rd, 2007

The billion dollar Hubble Telescope has been assisting astronomers for nearly two decades now, gathering information about our own Milky Way galaxy and the rest of our universe. The entire project has not been without problems, however. Shortly after its launch in 1990, it was discovered that the mirror contained significant spherical aberration that affected the performance of the telescope. A system was developed called COSTAR, Corrective Optics Space Telescope Axial Replacement, which used two mirrors in the light path to correct for the aberration in the main mirror. With this adaptation, astronomers could achieve the accuracy and clarity that they were hoping for.

Adaptive optics relies upon a secondary set of mirrors that are in place to adjust for errors within the main optical system. While the Hubble is one example of this, our own eyes can benefit from the advances made through adaptive optics. The measured point spread function in our eyes is far from perfect. In people with keratoconus and other corneal diseases, these optical error are even more significant. It is possible, however, to reflect light through a mirror that adapts light to these optical errors and produce a clearer picture on the retina.

Deformable mirrors (DM’s) have become very important for this. Once a person’s point spread function is measured, a deformable mirror can adapt itself to these measurements. In modern LASIK surgery, surgeons are measuring patient’s point spread functions in order to customize the LASIK surgery to improve vision results. In keratoconus treatment, the progress of the disease can be tracked through the measurements of a patients “wavefront” or point spread function. In cataract surgery, newer lenses are using principles of optics to provide clearer vision through adaptive optics. Doctors can also use adaptive optics to view the back of a patient’s eye, the retina. In fact, adaptive optics now allows researchers to view individual photoreceptors in a live human eye.

As research continues, we expect to see greater improvement in the application of adaptive optics. Perhaps LASIK surgery will continue to improve or adjustments can be made to allow LASIK to correct not just myopia, hyperopia, and astigmatism but top also decrease the symptoms of presbyopia. Many companies are looking at multifocal or aspheric corrections with LASIK surgery. Researchers are using adaptive optics to measure the extent of the vision loss in keratoconus that is caused by the cornea and how much is caused by loss of neural information. The field of adaptive optics appears to be able to provide many new and interesting discoveries. Keratoconus is one important disease that stands to benefit from the advances in research of adaptive optics.

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