To their surprise, they found that the eyeball elongates faster when vision is undercorrected.
2.
In their trial, O'Leary and his colleagues at the National University of Malaysia in Kuala Lumpur, undercorrected the sight of half the children and fully corrected the rest.
3.
As a result, the team reports in a paper that will appear in Vision Research, on average the vision of the 47 children with undercorrected myopia deteriorated more rapidly than those given full correction.
4.
She's told me she has a fairly strong prescription ( I don't know specifically but having peeked through her glasses I estimate it is at the " absolute most "-5 and probably more like-3 ); but would being undercorrected . 25 dioptres really cause such a large difference in how well she can see?