Abnormal, harmful, or undesirable effect on an organism that causes anatomical or functional damage, irreversible physical changes, or increases the susceptibility to other biological, chemical, or environmental stresses.
Optometrists can prescribe glasses, contact lenses, eye exercises, vision aids and therapy, and (in some states) oral and topical medications to treat certain eye diseases. Ophthalmologists are doctors of the eye. They have graduated from medical school and are licensed to practice medicine, so their credentials are either doctor of medicine (MD) or doctor of osteopathy (DO).
States Lead Effort to Let Pharmacists Prescribe Birth Control. Beverly Schaefer, a co-owner of Kattermanâs Sand Point Pharmacy in Seattle, has a physicianâs permission to prescribe various medications. She will prescribe hormonal contraceptives for women who say they have previously been prescribed them.