How your frame is sitting on your face determines how well you can see through your multifocal lenses. If your frame is skew, the two eyes are not looking through the same part of the lens, resulting in distorted vision. If your frame is sitting too long on your nose, the reading portion on your lenses becomes inaccessible, resulting in difficulty reading. If your frame is sitting too high on your nose, your distance vision will be blurry because you’ll be looking through the near part of the lens. It’s very important for your frame to fit properly when you’re wearing multifocal lenses. If your vision suddenly goes blurry, when it was clear, your frame may need to be adjusted.