An older client with diabetes mellitus complains of blurred vision with difficulty reading and driving at night. On the basis of the client&apos history

An older client with diabetes mellitus complains of blurred vision with difficulty reading and driving at night. On the basis of the client's history, the nurse interprets that these changes probably indicate the development of:
a) Detached retina
b) Papilledema
c) Glaucoma
d) Cataracts***