The top photo shows part of a Weiss' Ring that occurs from a posterior vitreous detachment (PVD). The vitreous is like a bag of gel that fills up the eyeball. At some point in most people's lives the bag pulls off the back of the eye, much like wallpaper falling off a wall. The patient can have symptoms of flashes of light and/or floaters. Sometimes it can pull on the retina, causing a tear, which could lead to a retina detachment and subsequent loss of vision. A PVD in and of itself is not dangerous, but the floater could bother a person enough that a retina specialist would have to do surgery to remove it.
The bottom photo is just of a very small amount of clouding of the lens of the eye. When it gets to a point that the patient loses vision, then it is considered a cataract. Of course those are easily fixed with surgery.
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As one ages, the risk of vitreous tears/detachments and retinal tears/detachments becomes greater, particularly if one if nearsighted.
There are a variety of nutrients one can take (along with a healthy diet) that help nourish the retina and reduce the risk of retinal problems including lutein, zeaxanthin, omega-3 fatty acids, taurine, gingko biloba, lycopene, vitamin A, E, zinc, copper, selenium for example, that can also help both prevent the onset of eye disease such as macular degeneration as well as help preserve vision for those with macular degeneration.
For more information and specific research studies by eye condition on nutrition and vision, go to Natural Eye Care
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