Hang the DialVision Eye Chart by at eye level at a 13 foot distance.
Turn the dials on both sides of the DialVision frame forward until you hear a click or until you cannot turn the dial any further.where to buy dial vision glasses? you can select official store .maybe you can buy on www.dial-vision.com.Your regular glasses can get lost, break or your prescription can change over time, resulting in a expensive trips to the optometrist! Perfect Vision are the world’s first glasses you adjust to give you perfect clear vision. You can move the dial to adjust the lenses until your prescription is matched perfectly. You can even adjust them to become reading glasses!
Put the dial vision eyeglasses and cover your left eye.
Turn the dial to ensure the lens is focused correctly. Attempt to read a string of letters on the last 2 lines for best results.
Now cover your right eye and repeat.
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