A young patient who had poor va (6/12 to 15) wanted to be able to read books without having the encumbrance of a magnifier with her glasses. Her Rx is R +0.75/-1.00 x 60 and L +0.50 -1.00 x 120.
The way to enlarge an image on the retina is to bring the object for study closer to the eye. Simple enough maths. The distance lenses that put the image of the horizon exactly on the retina achieve the best possible vision. No hocus pocus – the image is either ON the retina and you DO, or it isn’t and you DON‘T get the best vision you can possibly get.