TactilePertaining to the sense of touch.
TonicSlow, smooth tension. (See "Fusional Vergence")
Tonic VergenceConvergence due to the basic tonicity (tension) of the extraocular muscles, which are responsible, in part, for the distance phoria. Deficient tonic vergence would result in exophoria and excessive tonic vergence results in esophoria. (See "Vergence")
glaucoma, a disease in which pressure inside the eyes increases to the point that it impairs vision and if left untreated, may cause blindness.
TranaglyphRed/green targets used with red/green glasses to develop eye teaming skills.