Because patients needing medically necessary lenses often have irregular corneas, the process involved with fitting these lenses can be a difficult, expensive, time-consuming experience, that requires patience from and perseverence from both the practitioner and the patient.
Best Answer: An animal. Noun - name for an animal, person, place or thing. It refers to an inanimate object or a non-human one. Person refers only to humans. dog is a noun. a noun is a person, place, thing, or idea.
A noun can be categorized as either a common noun or a proper noun. A common noun is the word used for a class of person, place, or thing (e.g., person, city, dog). A proper noun is the given name of a person, place or thing, i.e., its own name (e.g., Michael, New York, Rover).