Adiabetes educator is teaching a group of adults about the risks to vision that result from poorly controlled blood glucose levels. which of the following pathophysiologic processes underlies the vision loss associated with diabetes mellitus? a) increased blood glucose levels cause osmotic changes in the aqueous humour. b) blood vessels supplying the retina become weak and bleeding occurs. c) diabetes is associated with recurrent corneal infections and consequent scarring. d) diabetes contributes to increased intraocular pressure.