The eye is one of the most important organs of human body. And it is quite critical to take good care of the eyes. Yet there are several top risks that threaten eye health.

Diabetes is always accompanied by high sugar levels, which may damage the blood vessels of the body, especially those in the eyes. Studies have found that excess amounts of blood sugar caused by diabetes can significantly increase the risk of several eye diseases, including cataracts, blood leakage in the retina, macular edema, macular degeneration, and glaucoma as well as eye infections. Associated with so many possible diseases, diabetes has become a top cause of blindness among US citizens.

Natural aging is inevitable in everyone. Vision loss at different degrees is quite common among old people, especially in those above 50. Vision loss caused by natural aging is always gradual and not noticeable. Yet there are still other health conditions that indirectly or directly affect eyesight in older individuals. Those factors include uncontrolled diabetes, high blood pressure, kidney disease, cataracts, AMD, retinal tears and detachment, glaucoma, diabetic retinopathy as well as presbyopia.

There is a great population of smokers in the world. Unfortunately, most people are not aware of the deleterious effects of smoking on the eyes. Smoking has been thought to increase the risk of macular degeneration and cataracts. This bad habit influences eye health by affecting oxygen level in the ocular tissues. Smoking makes a smoker’s heart to work harder and raise blood pressure, which becomes less efficient in delivering sufficient oxygen to the eyes.

High blood pressure in the eyes can lead to small leaks and clots. Blood leakage in surrounding eye tissues usually affects focus ability. And clots in the eye consume precious oxygen and even cause vision loss. Contributors of high blood pressure include heart disease, diabetes, and unresolved renal disease.

Nutrition also plays an important role in maintaining good eye health. People should regularly consume beneficial nutrients such as anti-oxidants including vitamin A, C and E as well as healthy fats such as omega-3 acids. A lifelong unhealthy diet can speed up aging process.

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