Answer:
a) glaucoma.
Step-by-step explanation:
Glaucoma -
It is the condition , mostly found in humans with age more than 60 years .
according to this condition ,
This disease damages the optic nerve of the eye , which is due to the formation of fluid on the front part of the eye .
And , because of this extra fluid , the pressure of the eye increases which can ultimately lead to a damage in the optic nerve .
hence , from the question , Cynthia , is suffering from the problem of Glaucoma .