Ashley's Mother Woke Up One Morning Seeing Rings of Flashing

 Ashley's mother woke up one morning seeing rings of flashing light in one eye. Her doctor diagnosed the event as a "vitreous detachment." Although Ashley was unfamiliar with this condition until she looked it up in her search engine, she was able to tell her mother that it probably involved

A) the pigmented tissue at the back of the eye that supports the photoreceptors.
B) a blockage of the tear ducts at the outer upper corner of the eye.
C) the fluid located in the main interior chamber of the eyeball.
D) the fluid located in the secondary anterior chamber of the eyeball.