The Americans have been pursuing for eye-beneficial nutrients and supplements for many years.
There are now a lot of different eye problems and diseases occurring in especially the old.
It is important to understand the aging and physiological processes, which offer a pathway to the benefits of these advertised nutrients.
It is true that many forms of nutrients advertised have little or no actual benefit to the eye health.
However, this does not account for all the cases.
There are actually a lot of age related disorders that are commonly targeted by eye nutrients.
Cataracts, macular degeneration and dry eye syndrome are among the most common.
Especially, there is a study conducted by West and associates suggesting some helpful and effective nutrients for the eye.
In particular the study named Age Related Eye Disease Study (AREDS) lists some beneficial nutrients in detail, including vitamin C, vitamin E, beta carotene and zinc.
Taking a combination of these substances for approximately 6 years is highly believed to decrease the risk of developing age related macular degeneration.
Another nutrient called lutein is also important for eye health.
Participants taking lutein for 18-20 weeks had higher plasma levels and increased macular pigment density.
Unlike age related macular degeneration, there are some other eye diseases including cataracts and diabetic retinopathy that can not be prevented by taking the mentioned nutrients.
These two conditions can not be treated by herbal remedies, antioxidants and all kinds of vitamins.
The AREDS study also found that the use of supplement could aid in preventing glaucoma.
In particular, cannabinoids has been proven to lower the intraocular pressure associated with glaucoma.
There are needed some additional researches to assess all the possible benefits of the mentioned eye nutrients.
One point has been clear that some of these substances do help in maintaining eye health and preventing some eye diseases.
While administering eye nutrients, it is meanwhile important to pay attention to drug interaction with other prescription medicines such as herbs and drugs.