Most vision problems are issues with the shape of the lens of your eye either causing distortion of the light (astigmatism), or changing the optical focal length of something at a particular distance to something not ideal, causing you to be near/far sighted, or both.
These contact lenses just insert a new series of optical lenses which cause magnification.
The other processes would be incredibly difficult as our understanding of how images are processed by the occipital lobe of the brain are limited at best. You might have some success with the cyberpunk method of a bionic which your brain can be taught to control, or genetic modification to change the density and type of receptors on your retina, or the shape of the eye.
Lmao peak professionalism guys.