Archive for July, 2011

Higher oxygen levels in African-Americans may increase glaucoma risk

07.29.2011

Researchers at Washington University School of Medicine in St. Louis discovered that oxygen levels are notably higher in the eyes of African-American patients with glaucoma compared to Caucasian patients with glaucoma. Glaucoma is six times more common in African-Americans. Results of this study are in the July issue of Archives of Ophthalmology.

All of the patients involved in the study were having eye surgery so there wasn’t a control group involved in the study. Oxygen levels were measured at five different locations in the eye and the oxygen levels were significantly higher in the African-American patients at all five locations.

Researchers were not surprised that oxygen may have a big role in the development of glaucoma because oxygen may be a source of free radicals which damage cells. Glaucoma is a disease associated with aging and oxidative stress is linked to the aging process. What researchers still need to determine is whether the elevated oxygen levels cause the intraocular pressure to rise. Once researchers understand the reason for elevated oxygen and how it may damage the eye, they will hopefully be able to develop therapies to prevent the disease.*

 

Elise Ervin
Staff Writer

Drink up that O.J. – Vitamin C Keeps Brain and Eyes functioning properly

07.27.2011

Vitamin C is necessary for retinal cells to function properly and researchers believe that vitamin C plays a vital role in the proper functioning of the brain as well. A study conducted by researchers at the Oregon Health & Science University detailing the findings of the study was published in the June 29, 2011 issue of the Journal of Neuroscience.

Researchers discovered that GABA-type receptors in the retinal cells stop functioning properly when vitamin C is removed. Since retinal cells are type of brain cell that is very accessible, it is believed that GABA receptors located elsewhere in the brain also need vitamin C for proper functioning. Vitamin C is a natural antioxidant and researchers theorize that it ‘preserves’ the receptors and retinal cells from breaking down prematurely.

While the function of vitamin C is not fully understood, researchers are hopeful that the study findings will prove beneficial in treating other diseases such as glaucoma and  epilepsy.

Elise Ervin
Staff Writer

Breakthrough! Two volunteers receive embryonic stem cell treatment for macular degeneration

07.25.2011

Surgeons implanted lab-grown retinal cells into the eyes of patients going blind from macular degeneration in the hopes of halting the loss of vision. Researchers were recently given the green light from the FDA to test the treatment in 24 patients suffering from either dry advanced macular degeneration or Stargardt’s disease.

In macular degeneration, retinal cells are killed off , which in time, leads to the death of photoreceptors and the eventual loss of central vision. Researchers are hopeful that injecting new, lab-grown cells into the eye will cure macular degeneration.

With almost 10 million Americans suffering from either the wet or dry form of macular degeneration, researchers are cautiously optimistic about the potential for the new stem-cell therapy. Currently, the treatment for the wet form of macular degeneration involves injections in the eye. There is no treatment available for the dry form of macular degeneration although supplementation with vision nutrition supplements that contain, lutein, zeaxanthin and omega-3 fatty acids has shown to be of critical importance.*

Elise Ervin
Staff Writer

Blue-Eyed Baseball Player Blames Sun for Lower Daytime Batting Average.

07.24.2011

Texas Ranger’s superstar outfielder, Josh Hamilton, has recently publicly stated that he feels that the reason he is hitting so pooly during the day is because of his blue eyes.   Take a look at Hamilton’s daytime batting average, which is a very sad .122 under natural sunlight and an impressive .374 under the lights of night games.  Excuse?  Old wives’ tale?  After all, retired Hall of Fame Baltimore Orioles Infielder, Cal Ripkin, who had ice blue eyes, never claimed to have this problem.

For years, blue eyes have been a sign of popularity.  Frank Sinatra’s nickname was “Old Blue Eyes.”  Elizabeth Taylor was known for her deep brunette hair and her stunning violet-blue eyes.  Pets such as Siberian Huskies and Himalayan kittens are popular for their light blue eyes.  Even Elton John wrote a hit song about Blue Eyes.  In high schools all over the country everyone wanted to be as popular as the blonde haired, blue-eyed cheerleader.  Could it be true that blues eyes are actually more of a curse than a perk?

The fact is that due to the  lack of pigment in lighter color eyes — like blue or green eyes as opposed to brown — you get a lot more unwanted light and that can create a tremendous glare problem.  This phenomenon is called intraocular light scatter, meaning the light scatters as it enters, producing a focal point that isn’t as good, making it virtually impossible for Hamilton to focus on a white ball coming at him at 90+ miles per hour in the bright sunlight.

Baseball players are not the only people who struggle with this.  Airline pilots,  truck drivers, lifeguards…any profession where you predominantly work in the sunlight could be effected by this phenomenon.  There is no “cure”, so to speak, but a good pair of quality sunglasses would certainly filter enough of that light out, drastically improving  daytime vision.

Mary Sweetman, C.O.A.
Certified Ophthalmic Assistant

=============

Sunglasses aren’t enough. The ballplayers describe losing the ball in the sun, even when wearing dark shades.

This is because  there is less melanin pigment directly beneath the fovea, which the center of the retina for seeing detail vision – such as the seams of a baseball as it is hurled at the plate.

In a recent New York Times article about glare and blue eyes, Dr. Ton Teig, an optometrist who founded the Institute for Sports Vision, stated that he recommends supplements with Lutein and Zeaxanthin for blue-eyed athletes, because these substances contain high levels of melanin pigment.

Not surprisingly, our customers who take VisiVite supplements with high doses of Lutein And Zeaxanthin have been reporting improved contrast and decreased glare for years.

Paul Krawitz, M.D., President
Vitamin Science, Inc.

 

 

Can a Tuberculosis vaccine cure insulin dependent diabetes?

07.22.2011

Results of a Phase 1 clinical trial offer hope to type 1 diabetic patients of a possible cure for type 1 diabetes. Researchers found that the generic drug BCG was able to temporarily reverse Type 1 Diabetes in humans.

Presently, BCG is approved by the FDA for use as a vaccine for tuberculosis and for the treatment of bladder cancer. The drug is now starting Phase II trials. In the Phase 1 trial, the BCG vaccine reversedType 1 Diabetes by elevating the tumor necrosis factor which is what is responsible for ridding the body of abnormal white blood cells which in turn are the proposed cause of type 1 diabetes. The BCG vaccine therefore enables the pancreas to produce insulin which keeps the blood sugar levels at acceptable levels.

BCG has been used for 90 years and is an inexpensive drug. The success of the Phase 1 trials offers hope to Type 1 Diabetic patients.*

Elise Ervin
Staff Writer