Beginning cataracts may progress faster if your eye's protection is not sufficient. Eileen tip seems to be the first thing to do - better direct and focused light.
Phill (Speedslug) mentioned didy shield - it is more comfortable if you wear glasses. And in combination with better lighting it could provide good protection and comfort to work.
But unfortunately the eye deseases can not be stopped without surgery if they are progressing
But may be accelerated if proper safety and care are not observed...