Retinal Vein Occlusion: A Complete Overview from Natural Eye Care

retinal vein occlusionRetinal Vein Occlusion is the blockage of veins that drain blood from the retina in the eye. The eye circulatory system depends on releasing blood back to the heart after it has nourished the retina. When the vein is blocked, hemorrhaging occurs, damaging the retina. It is typically caused by atherosclerosis, a common condition especially in older people that damages the arteries. “Occlusion” means the blockage or closing of a blood vessel.

Symptoms and How Retinal Vein Occlusion Is Diagnosed

A sudden change in vision may indicate retinal vein occlusion.

  • A blurred or missing area of vision is the most common, indicating a branch vein occlusion
  • Less commonly, there is a severe loss of central vision, associated with a central vein becoming blocked.

Any sudden vision changes should be reported Continue reading “Retinal Vein Occlusion: A Complete Overview from Natural Eye Care”

Rod-Cone Dystrophy – A Complete Overview by Natural Eye Care

rod-cone-dystrophy-200Rod-Cone Dystrophy is a genetically-based deterioration of vision caused by damage to the photoreceptors in the eye. Rods and cones are the photoreceptor cells in the retina that give us daytime and night time vision. Genes that provide the blueprint for manufacturing proteins crucial to the eye’s rods and cones are damaged. Without enough of these proteins, vision deteriorates and blindness may result.

Much of the current research into rod-cone dystrophy is focused on genetic research. Scientists are busy identifying the faulty genes and how they function. Stem cells or other genetic therapy offers hope for a treatment and possibly cure in the future. In the meantime, nutritional and lifestyle choices may Continue reading “Rod-Cone Dystrophy – A Complete Overview by Natural Eye Care”

Lutein Absorption Higher as a Solid-Lipid Particle Complex

egg yolkLutein absorption can be improved by adding solid-lipid particles to the formula.  What does that mean?   Lipids are fats and solid-lipids are fats which are solid at room temperature.  Researchers have noted that lutein from egg yolks is more readily absorbed than the ester form of lutein. Researchers wanted to know whether combining ester lutein with egg-like phospholipids and fatty acids  would improve its absorption rate.

Lutein Absorption Studied

A pilot study found that lutein in the form of a solid-lipid particle complex appeared to be more readily absorbed than the traditional  ester supplements. This supplement was prepared from enriched egg yolk. The results mean that more bio-available supplements of this important carotenoid antioxidant could come in the near future.

Research demonstrates that Lutein has a protective and supportive effect on eye health. The macula at the back of the eye is yellow due to lutein and zeaxanthin. They filter blue light, protecting the eye. Without proper intake and absorption of these two carotenoids, the eye can develop several diseases including Macular Degeneration (AMD).

The supplement is called a Continue reading “Lutein Absorption Higher as a Solid-Lipid Particle Complex”

AMD Research: Part 1

age-related macular degeneratio ARMD Age-Related Macular Denegation is a significant cause of vision loss that can often be managed and even improved through targeted nutritional support. It affects mostly people over age 50. While the precise cause of ARMD is not clear, oxidative damage is suspected as being a major factor. It strikes the elderly possibly due to poor diet and nutritional intake over a lifetime, less efficient absorption of nutrients and poor circulation as the body ages. The care needed by vision-impaired elderly could become overwhelming. Let’s take a look at some of the newest research in preventing macular degeneration, as well as treatment and support options.

Symptoms & Diagnosis

Central vision is possible because of the macula. It is a small, yellow-colored Continue reading “AMD Research: Part 1”

Can Oxidative Damage Cause Macular Degeneration and Cataracts?

vegetables and fruits containing antioxidantsAntioxidants have been studied as a way of preventing eye diseases such as macular degeneration and cataracts. Oxidative damage (free radical damage) may be a contributing cause of these diseases. People concerned about developing these problems may consider taking both dietary and supplemental antioxidants, such as fruits, vegetables, and supplements like lutein, zeaxanthin, glutathione, Continue reading “Can Oxidative Damage Cause Macular Degeneration and Cataracts?”

Low Intake of Antioxidants & Lutein Associated with Macular Degeneration (ARMD)

antioxidant vegetable for eyesEating plenty of fruits and vegetables helps ward off a common eye disease, age-related macular degeneration (ARMD). A study in Acta Ophthalmologica looked at the relationship between intake of antioxidants (including the antioxidant lutein) and the incidence of macular degeneration. It found that people with low intake of antioxidants were twice as likely to have this eye disease versus controls. Continue reading “Low Intake of Antioxidants & Lutein Associated with Macular Degeneration (ARMD)”

Computers & Your Eyes II: How Blue Light Damages Vision

blue light electronics Blue light is emitted from all handheld electronic devices as well as desktop and laptop computers and televisions. It is the shortest wave length light in the visible spectrum and causes significant damage to many parts of the eye seriously impacting present and future vision capacity. Damage from blue light from smartphones is particularly important because smartphones are often used in dim light and are used close to the eyes. Unlike ordinary computer vision fatigue, damage from blue light is serious, cumulative and irreversible. Continue reading “Computers & Your Eyes II: How Blue Light Damages Vision”

How Carotenoid Supplementation Could Prevent Macular Degeneration and Alzheimer’s Disease

carotinoids junk food or tomatoesCarotenoids have been shown to protect against oxidative damage, which can prevent both macular degeneration and factors contributing to dementia-related diseases (i.e., Alzheimer’s disease).[1. “Protective Effects of Dietary Supplementation with a Combination of Nutrients in a Transgenic Mouse Model of Alzheimer’s Disease” Shengyuan Wang et al., PLoS One. 2015; 10(11): e0143135. Published online 2015 Nov 25. doi:  10.1371/journal.pone.0143135 PMCID: PMC4659639] Links have been found between these two diseases: patients with dementia were found to have poor maculas and a higher incidence of Macular Degeneration[2. “Macular pigment, visual function, and macular disease among subjects with Alzheimer’s disease: an exploratory study.” Nolan JM et. al. J Alzheimers Dis. 2014;42(4):1191-202. doi: 10.3233/JAD-140507.].

However, these nutrients do not seem to be able to mitigate damage after dementia sets in. Therefore, making sure sufficient amounts of carotenoids are ingested at all ages Continue reading “How Carotenoid Supplementation Could Prevent Macular Degeneration and Alzheimer’s Disease”

AMD Inhibited by Lutein, Carotenoids, and Zeaxanthin Antioxidants

amd blind braille bookNew evidence continues to support dietary lutein, carotenoids, zeaxanthin, and meso-zeaxanthin as a means of inhibiting development of age-related macular degeneration (AMD). AMD is the leading cause of loss of vision in Western people over age 55.

A study published in 2010, in Archives of Biochemistry and Biophysics by the Department of Ophthalmology and Visual Sciences at University of Utah, found that production of singlet oxygen in the human retinal pigment epithelium (RPE) and choroid is prevented or reduced by lutein, zeaxanthin, and meso-zeaxanthin, which act as Continue reading “AMD Inhibited by Lutein, Carotenoids, and Zeaxanthin Antioxidants”

Night Blindness Improved by Transplanted Photoreceptor Cells in Animal Experiment

Night visionTransplanting light-sensitive photoreceptor cells into mice with night blindness resulted in improved night vision. Night blindness means seeing poorly in the darkness, but seeing normally when there is enough light. In this groundbreaking research, scientists injected light-sensitive photoreceptor cells into night-blind mice’s eyes. After this treatment, the animals were able to see well enough to navigate a water maze and swim toward a visual cue in dimly lit conditions. Controls who did not receive the treatment were unable to efficiently navigate the maze.

Continue reading “Night Blindness Improved by Transplanted Photoreceptor Cells in Animal Experiment”