alpha (alpha) angle(redirected from alpha a angle)
al·pha (α) an·gle(al'fă ang'gĕl)
1. The angle between the visual and optic axes as they cross at the nodal point of the eye.
2. The angle between the visual line and the major axis of the corneal ellipse.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012