What effect does wearing high minus lenses in a frame that is too large have on the appearance of the head?

Wearing high minus lenses in a frame that is too large can create the optical illusion of making the head appear narrower. This effect is due to how high minus lenses refract light. These lenses cause objects viewed through them to appear smaller than they are, which leads to a reduced visual size of the eye and the surrounding facial area.

When these lenses are placed in an oversized frame, the edges of the lenses are often thicker compared to the center, enhancing the shrinkage effect on the perception of facial features. As a result, the wearer may look as though their head has a narrower appearance overall. This is particularly pronounced for those with significant myopia, as the more powerful corrective lens magnifies this optical illusion.