looking at my dogs eyes when he keeps his head still and looks to the left or right
the white of his eyes looks a little on the grey side close to the colour of his eyes
he is in good health imo, he is 7months old (rottie) will they get whiter as he gets older
any comments or advice will be welcome

You dont want the corners of the white of eye to look too white, infact, muddy brown is ideal.
Startlingly white corneas ( around the coloured irises) will give the dog an 'astonished' look or as we boxer folk say "eyes like two fried eggs".

thanks for that. i was wondering if it was a sign of ill health as it is sometimes in people,
its about 20 years ago that i last had rotties and cant remember how white the eyes
were ,think i am just looking for probs that are not there . did the same with the kids
when they were young, ( in fact i still do cant help caring can you)