Blindness is a lack of<unk> . It may also refer to a<unk>  of<unk>  that cannot be corrected with glasses or contact lenses.
Partial blindness means you have very limited<unk> .
Complete blindness means you cannot see anything and do not see light. (Most people who use the term "blindness" mean complete blindness.)
People with<unk>  worse than 20/200 are considered legally blind in most states in the United States.<unk>  refers to the partial or complete<unk>  of<unk> . This<unk>  may happen suddenly or over a period of time.
Some types of<unk>  never lead to complete blindness.
Vision loss
Oliguria
Dysuria
Anuria
Muscle weakness
Polyuria
Urinary urgency
Blurred vision