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.
Note that the definition of legal blindness differs from country to country and that the criteria listed above are for the US. Legally blind has nothing to do with the prescription numbers. Legally blind means that your best vision cannot be corrected with glasses or contact lenses any better than 20/200. A normal person with 20/20 vision can see objects clearly that is 200 feet away from him, while the legally blind person can only see the object clearly that is 20 feet away from him.