Hi
For all my life from 10 yrs old, myopic = short-sighted - for 50 years.
With old age came a regular lessening of the myopia, so beginning to approach normality (maybe by the time I'm 90?)
Very slight cataract began about 2 years ago.
Then -
Several weeks before my diagnosis as Type 1, I suddenly became VERY short-sighted, and needed to wear specs from 2 years before.
High blood glucose causes thicker eyeball fluids, which alter the prism effect. It settles when the glucose stays low over several months. .
High versus low readings for BG?
Driving - you need to be either over 5 (according to Gloucestershire Health Community) or over 7 (according to a consultant in Lancaster) before starting to drive for two hours. So that must be fairly high on normality scales.
Target range is 4-6. Driving 5-7. Over 13 test for ketones - must rate as too high.
Anything over normal can affect your eyesight.
Mine must vary all the time, as I fluctuate from usually 6 to 12.
I have opted for varifocals spectacles - that way I really don't care if there is a bit of fluctuation - I won't notice as I look through the bit of the lens that suits the situation at the time.