Vitamin C from food Prevent Cataracts

Cataract is a clouding in the lens of the eye that can cause blindness. This clouding is a natural process with age. Although it can be treated with cataract surgery but it can be prevented.

Several studies have found people who have high levels of antioxidants in the body, including vitamin C, the risk for cataracts is lower.

However, most studies were conducted on the population in Western countries. Therefore the researchers tried to conduct research involving respondents from developing countries like India, where vitamin C adequacy still low and relatively high prevalence of cataracts.

For the study, researchers evaluate more than 5,600 adults in India aged over 60 years. Respondents were interviewed about diet and lifestyle as well as taking blood samples to measure vitamin C levels in the body.

In general, nearly 73 percent of study participants suffered from cataracts. But people who have high enough levels of vitamin C, the risk was reduced by 39 percent compared with C vitamin deficiency.

In that study most of the respondents lack of vitamin C, even nearly 30 percent had a vitamin C concentration below the lower limit of detection(less than 2 micromoles per liter). Whereas under 11 micromoles per liter is considered deficient of vitamin C.

The results of this study published in the journal Ophtalmology. But do not conclude that the adequacy of vitamin C will prevent cataracts. Even so, senior researcher Astrid Fletcher, said vitamin C is an antioxidant that can protect the body from free radicals.

"Lab studies on animals have suggested vitamin C has an important role to protect the lens from oxidative stress," he said.
Eyes, according to him, are particularly vulnerable to oxidative stress. "Light is essential for vision but also very damaging light. The lens absorbs ultraviolet radiation, the major source of oxidative stress," he explained.

Several studies conducted in developed countries does not show the same results as in India. Fletcher argues that case because people from these countries have a good nutritional status so that additional doses of vitamin supplements do not help enough.

"Vitamin C is water soluble so the excess easily removed. Besides taking vitamin supplements is difficult to match the effects of vitamins from food," he said.

Vitamin C-laden foods such as fruit color, kiwi, strawberries, broccoli, tomatoes as well.

Common Eye Problems

How our eye work, as part of our human body, eyes can detect light and convert them into electromagnetic pulse that form an imagine on our cornea and enabling us to see.

The most problem on our eyes as follows:
Eye Twitching: eye twitching is a blinking disorder, can very irritating to the eye common problem. Eye twitching can cause by high caffeine levels, pink eye, fatigue, nervous system disorders, panic disorder, and or staring at the television or computer for an extended period of time.

Stye Eye Infection: Eye stye also called as hordeolum is an infection because of blockage in the hair follicle of an eyelash that results in a small bump on the outside or inside of the eye. Eye sties are cause by staphylococcus bacteria that infect the glands causing it to swell an may fill with pus.

Astigmatism is another common problem on an eyes, people with this problem will difficult to focus to object near or far. In most cases by squinting or titling the head seems to help improve the ability to focus. Astigmatism can be addressed with prescription glasses or contact lenses.

Cataracts: cataracts is the most common problem on eye, that make blindness in older people than fifty five years of age, refer to a condition in which the eyes lens in clouded or blurred vision. The lens on the eyes is contained a lens capsule in which dead cells accumulate over time clouding it.

Retina Detachment, this is a common eye problem that refers to a phenomenon in which it separates from the choroids. The patients that is suffering from myopia and usually caused by trauma. There are option to treat this problem by pneumatic retinopexy, cryotherapy or laser therapy.