This is for people that usually have Blurry vision. This Blurry vision could be as a result of two much fixing of the eyes on a particular object.
Just like TVs, Computers, phones. And also walking under the sun all day and all time.
Allowing the sun rays to permeate the eyes, could affect the eyes.
Nevertheless, there are some physical exercise you can do to reduce Blurry vision.
They are; 1, The 10-10 Rules
2; Blinking of the eyes
3; Get Palming
4,Stop, Tone and Roll