You don’t have any vision problems….your vision is perfect……so why should you get your eyes examined yearly…or at all?? Do you know anyone who has really good eyesight…and feels that there is no reason to go to the eye doctor because they don’t need eyeglasses??
Well, the above YouTube video is for YOU and THEM!
A common misconception is that the only reason to see an eye doctor is to get some glasses, contacts or to get their prescription updated. Does this sound familiar??
A comprehensive eye exam is MOSTLY about checking the HEALTH of your eyes. A lot of eye health problems – diseases and disorders of the eyes (like glaucoma, retinal holes and tears etc) – do NOT cause any kind of symptoms (like blurred vision, headaches, pain, feelings of “pressure” in and around eyes etc…).
Just because you can see clearly, see colors correctly and don’t notice any vision problems does not necessarily mean that your eyes are healthy.
Did you know that a comprehensive eye exam can ALSO provide early detection of some SYSTEMIC problems. All sorts of systemic problems – like Diabetes, High Blood Pressure, High Cholesterol, Brain Tumors etc….can be detected during a comprehensive eye exam. If your eye doctor suspects that you may have a systemic problem then, he or she can refer you to your primary care doctor for further evaluation and testing to determine if you have the systemic disease.
. 
Visionary Eyecare's Blog: "The Eye Journal" 