I regret to say that my understanding of the Disability Discrimination Act is that it does not extend to a refractive error, ie the need to wear spectacles.
I have noted that in discussing the new requirements the phrase 'no anisometropia of over 2 dioptres' has been overlooked. For information this means if your refractive error (and although I have read the document EASA MED 15 Dec but not throughly) it will possibly determined using spherical equivalent error (mean sphere) and if for example your right eye is -3.00DS and your left is -5.50DS then you will fall outside the limits.