Daniel M. Albert | Britannica

Daniel M. Albert

Contributor

LOCATION: Madision, WI, United States

BIOGRAPHY

Professor of Ophthalmology, University of Wisconsin at Madison. Professor of Ophthalmology, Wisconsin Alumni Research Foundation.

Primary Contributions (32)

Articles

A diagram showing the extraocular muscles of the right eye. The extraocular muscles control the movement of the eye and are themselves controlled by a variety of cranial nerves. Sometimes these muscles become paralyzed, and conditions such as ptosis (drooping of the eyelid) result.

ptosis

Ptosis, drooping of the upper eyelid. The condition may be congenital or acquired and can cause significant obscuration of vision. In congenital ptosis the muscle that elevates the lid, called the levator palpebrae superioris, is usually absent or imperfectly developed. If severe and not corrected…