Photophobia
Painful oversensitivity to light. For example, photophobia is often seen in measles and iritis. Keeping lights dim and rooms darkened is helpful when a patient has photophobia. Sunglasses may also help.
Read Also:
- Photorefractive keratectomy (PRK)
A kind of laser eye surgery designed to change the shape of the cornea to eliminate (or reduce) the need for glasses and contact lenses. The laser is used to remove the outer layer of the cornea and flatten the cornea. The flattening of the cornea is intended to correct myopia (nearsightedness) and astigmatism (uneven […]
- Photosensitivity
Oversensitivity of skin to light. Photosensitivity can be a side effect of medications or result from diseases, such as lupus. Treatment depends on the severity of the reaction and the cause. Photosensitivity can be prevented by avoiding skin exposure to ultraviolet light.
- Phototherapy
Treatment with light. For example, a newborn with jaundice may be put under special lights to help reduce the amount of bilirubin pigment in the skin.
- Phrenology
The study of variations in the size, shape, and proportion of the cranium. Phrenology was a pseudoscience of the 18th and 19th centuries, based on the belief that a person’s character could be learned by looking with care at the shape of the person’s head and noting each and every bump and depression in the […]
- PHS
There currently are more than 6,100 officers on active duty. Officers are assigned to all of the PHS Agencies and to a number of agencies outside of PHS, including the Bureau of Prisons, U. S. Coast Guard, Environmental Protection Agency, Health Care Financing Administration, and the Commission on Mental Health of the District of Columbia.