A person who cannot see well or pretends not to see. It is a colloquial term for someone being blind, often used when they miss something right in front of them.
What do you mean you did not see me? Are you Cegata or what? : Look for it yourself, or are you Cegata?
Refers to glasses with extremely thick lenses, usually due to a high prescription (the name comes from their resemblance to the thick glass found at the bottom of a soda or beer bottle).
Maria wears some fondo de botella, poor girl is blind.