by Dan Roberts August, 2002 Researchers at the University of Michigan Kellogg Eye Center have discovered a genetic link to a form of macular degeneration. In an article published in August 2002 in Genome (“X-Linked Recessive Atrophic Macular Degeneration from RPGR Mutation,” pp. 166-171, doi:10.1006/geno.2002.6815, Radha Ayyagari, et al) the gene RPGR (associated until now […]
by Dan Roberts August, 2002 Until recently, some doctors have thought that megadoses of Vitamin E might help prevent macular degeneration. This opinion was bolstered by the National Eye Institute study and the resulting AREDS report on the benefits of high doses of antioxidants and zinc, which included Vitamin E. New research has concluded, however, […]
by Wendy Strouse Watt, O.D. Originally published July 2002 What is Fluorescein Angiography? Fluorescein angiography is a test which allows the blood vessels in the back of the eye to be photographed as a fluorescent dye is injected into the bloodstream via your hand or arm. It is particularly useful in the management of diabetic […]
by Dan Roberts April 2002 AMD patients are benefitting from a new combination drug therapy being tested at the University of Texas Health Science Center at San Antonio (UTHSC). The therapy involves a combination of medicines which includes carbon dioxide, an element which dilates the blood vessels in the retina for the maintenance of proper […]
by Dan Roberts April 2002 Researchers have shown that participation in an email discussion group may improve health status and lower health care utilization for persons with recurrent back pain. This is the first study of its kind which looked at Internet support in connection with health improvement, and it is this writer’s belief that […]
Definition of Low Vision Low vision is defined as an impairment of sight which cannot be adequately corrected with pharmaceutical or surgical interventions, conventional prescription eyewear, or contact lenses. The patient usually presents with a loss of visual field, loss of light sensitivity, distortion, loss of color vision, or loss of contrast. Low vision varies […]
by Robert Hammer, B. Optom. January 2002 The gene for Stargardt’s disease has been identified (Allikmet et al.’97 Nat. Gen. 15:236-246). The faulty gene fails to code for a protein which is present in rod outer segments only (has not been found in cones, pigment epithelium or anywhere else in the body). This protein was […]
by Dan Roberts November 2001 An online publication of the December 2001 publication of Nature Neuroscience has reported that, with genetic manipulation, cells from the iris may be able to replace photoreceptor cells in the retina. In recent experiments, Dr. Masatoshi Haruta of Kyoto University and colleagues took iris cells from rat eyes, then introduced […]
by Betsy Nisbet November 2001 ANN ARBOR, MI – A paper published electronically by Nature Genetics offers important new insights into the development and differentiation of rod and cone photoreceptors, the light-sensitive cells in the eye’s retina that initiate vision and are essential for clear sight. A team led by Anand Swaroop, Ph.D., professor of […]
by Dan Roberts If you are protecting your retinas by avoiding direct sunlight, you may also be depriving yourself of a natural source of vitamin D. This is the vitamin which allows your body to absorb enough calcium for strong bones. It is also important to protect us against muscle weakness and possibly a risk […]