(Greek: strabizein > Modern Latin: "to squint"; imperfect focus; eyes deviating inwardly, deviating outwardly, or one eye going to the right and the other eye going to the left)

apparent strabismus (s) (noun)
The cosmetic appearance that gives the impression that there is ocular deviation which is caused by the anatomic configurations of the eyelids or pupils while in actuality, the lines of sight are normally straight.
horizontal strabismus (s) (noun)
Ocular deviation that is shown as the misalignment of the eyes from a side-to-side level.
microstrabismus (s) (noun)
A movement of the eyes in different directions or at different speeds: "These microstrabismus are too small and too fast to be seen normally; however, they have been detected by analysis of high speed motion pictures."
monocular strabismus, monolateral strabismus, unilateral strabismus, uniocular strabismus (s) (noun)
A deviation of the same eye
nonconcomitant strabismus (s) (noun)
A disorder of an eye which varies in degree with the change in direction in which the eye moves.
periodic strabismus (s) (noun)
Abnormal eye squinting which is different in amount or existence depending on how the eyes are being used.
strabismic (adjective)
A reference to the abnormal alignment of the eyes that cause squinting.
strabismical (adjective)
Descriptive of those who have squinting eyes or eyes that can't be focused at an object at the same time.
strabismus (s) (noun)
1. A visual defect in which the two eyes can't coordinately focus because of an imbalance in their extra-ocular muscles: "People with strabismus have a tendency to squint in order to compensate for their imperfect focusing."

"Essentially there are two kinds of strabismus:

  • When one or both eyes turn inwardly (esotropia, from Greek eso-, "inward" + trope, "turning").
  • When one or both eyes turn outwardly (exotropia, from Greek ex-, "out" + trope, "turning").
2. A disorder in which the eyes point in different directions or are not aligned properly because the eye muscles are not able to focus together: "In strabismus, one of the eyes may look in or out, or turn up or down and such turnings of the eyes can exist all the time or only sometimes; such as, during stressful situations or illness."

"The danger with strabismus is that the brain may come to rely more on input from one eye than the other, and the part of the brain circuitry that is connected to the less-favored eye may fail to develop properly, leading to amblyopia (weakened vision or blindness) in that eye."

"The classic treatment for mild to moderate strabismus is to cover the stronger eye with a patch, forcing the weaker eye to be more active and to become more normal."

"Severe strabismus may require surgery."

strabometer (s) (noun), strabometers (pl)
A device for use when measuring the deviation of the eyes in which the visual lines around the eyes turn but do not meet at the desired focal point.
strabometry (s) (noun), strabometries (pl)
The medical process used to determine the degree of ocular deviation in the abnormality of the eyes.
strabotome (s) (noun), strabotomes (pl)
A special surgical knife used for operations on the eye muscles in order to correct a person's vision.
strabotomy (s) (noun), strabotomies (pl)
Surgery for the correction of the abnormality of the ocular muscles of the eyes.
vertical strabismus (s) (noun)
The misalignment of the eyes in which the eyes separate in either an up or a down direction.