The expected urine creatinine excretion per 24 hours: Males: 13-29 mg/kg of body weight/24 hours. Females: 9-26 mg/kg of body weight/24 hours. Reference ranges for male and female patients <18 and >83 years of age have not been established.
blindness. lack or loss of ability to see (see vision). Legally, blindness is defined as less than 20/200 vision in the better eye with glasses (vision of 20/200 is the ability to see at 20 feet only what the normal eye can see at 200 feet). A person with 20Â° or less vision (pinhole vision) is also legally blind.
Blindness and Low Vision. FACT SHEET. It is estimated that about 1.3 million people in the U.S. are legally blind. Legal blindness refers to central visual acuity of 20/200 or less in the better eye with the best possible correction, or a visual field of 20 degrees or less. Each year 75,000 more people in the United States will become blind or visually impaired.