why the glasses? b/c he's apparently fairly nearsighted. glasses not only make him see significantly better, but also reduce the probability and effect of refractive
amblyopiaAmblyopia. if he really is -7.5 and -8.5, he should definitely be wearing glasses IMO, unless he's known to be totally blind, which you have not stated that he is.
'is there any reason to try and prevent any further scarring and if so what can be done in preventative measures'
there is no way to 'prevent' future scarring.
Thanks again for your time.