Strabismus

{strab-izf -mus) [crrpa/3«r//dc, from crpa^og, crooked]. Squint; that abnormality of the eyes in which the visual axes do not meet at the desired objective point, in consequence of incoordinate action of the external ocular muscles. S., Alternating, one in which either eye fixes alternately. S., Concomitant, one in which the squinting eye has full range of movement. S., Convergent, one in which the squinting eye is turned to the nasal side. S., Divergent, one in which the squinting eye is turned to the temporal side. S., External. See S., Divergent. S., Internal. See S., Convergent. S., Paralytic, that due to paralysis of one or more muscles. S., Spastic, that due to a spastic contraction of an ocular muscle. 601