Note: Although I speak mainly about myopia, other forms of blurry vision, like hyperopia & presbyopia, and conditions, like amblyopia or strabismus, can be improved & healed naturally.
I remember wearing glasses for myopia ever since 4th grade. Unfortunately, I wasn't taught that merely wearing glasses is rather like merely replacing a blown fuse with a new one, same with laser eye surgery, or Lasiks. Depending on any kind of corrective lenses or laser surgery is like putting frosting on a mud cake, as they say at Landmark Education. Like most traditional western medicine, corrective lenses & Lasiks treat the symptoms but not the underlying causes of disease.
I have myopia (near-sightedness). Myopia is a disease in the same way that obesity is. Poor eating habits lead to obesity; poor vision habits lead to nearsightedness. Unfortunately, society's typical lifestyle is sedentary and consists of lots of near-point stress on the eyes (reading & computer user... Ever wonder why the typical nerd has thick glasses?), eating food that isn't really food, and poor sleeping habits (Before the light bulb was invented, the average amount of sleep was 10 hours/day; now, it's 7 with more circadian rhythm disruption.)... all things lead to both obesity & blurred vision. Like most prominent diseases, both of these diseases have very little to do with genetics and much to do with nutrition, lifestyle, and environment. If you learn solely from the popular media & traditional education, that last sentence may have just challenged your beliefs. (Do you get defensive if your beliefs are challenged?) Read The China Study if you don't believe me.
I first stumbled upon the possibility of improving my vision after watch The Secret for like the seventh time. It finally hit me when the Reverend was saying, "I've see cancer cured... I've seen vision improve, and come back..." I was like, "What??? No way." I ran upstairs to my computer and went straight to Google. I got tons of hits and immediately transformed into a sponge. Minutes later, I ordered a book off Amazon.
Why improve your eye-sight?
Joe Blogs' answer: Do it for your sanity. Ever try looking for your glasses when you're actually wearing them?
Do it for you health, esp. your eye health, and to prevent eye diseases that could lead to blindness. Blurred vision is a sign of unhealthy eyes and, in most cases, mind & body. Myopes are more likely to experience floaters, dry/red/tired eyes, headaches, eye pain, etc. More importantly, myopes are also more likely to develop eye diseases such as retinal detachment, glaucoma, cataracts, etc. that could lead to blindness. Macular degeneration can be prevented with a high-nutrient, plant-based diet (Basically, the antioxidants in plants protect your macula from the free radicals caused by sun rays. This is explained by T. Colin Campbell in The China Study.).
Do it for better vision. You can see better with healthy eyes than with unhealthy eyes corrected to 20/20 acuity with corrective lenses or Lasiks. There is more to vision than just acuity (an eye's ability to focus near & far). For example, healthy eyes have better contrast & 3D perception than myopic eyes. Healthy eyes can also move faster, facilitating such things as faster reading and better hand-eye coordination for sports.
Do it for your appearance. People with myopia tend to have rings under their eyes because they are constantly straining to see. Also sleep deprivation gives the rings under the eyes and is another cause of myopia. Lazy eye can also be corrected naturally. The whites of healthy eyes are clearer. Whereas, the whites of unhealthy eyes tend to have more visible blood vessels.
Can you think of any other reasons? Add them below as comments.
Start with Prevention
"Nature, to be commanded, must be obeyed." - Francis Bacon
Obey the 10-10-10 rule. If you're engaging in near-point activities, like reading or using the computer, every 10 minutes, bring into focus, for at least 10 seconds, a specific point that is at least 10 feet away.
Do not get glasses or laser surgery (Lasiks). They will make your eyes & uncorrected vision worse. "It is fortunate that many people for whom glasses have been prescribed refuse to wear them, thus escaping not only much discomfort but also much injury to their eyes." - Perfect Eyesight Without Glasses
References
http://www.i-see.org/ - This site is a great reference. I recommend joining their mailing list for at least a week or so. You'll learn a lot. Also, check out William Bates' book Perfect Sight Without Glasses: http://www.i-see.org/perfect_sight/.