Prefi Flashcards
(27 cards)
May be due to problem with oblique muscles
Head tilting
Due to lateral problems (esotropia/exotropia)
Face turning
A false appearance of strabismus
Pseudo/Apparent
the incoordinated dissociation of infancy before BV is developed
Spurious
manifested only in a specific relation to a given condition
Relative or periodic
both eyes down
Catatropic
both eyes up
Anatropic
both eyes turn up and in
Braids
Excylo or Incyclo
Cyclotropic
Management for infantile eso/exo
- Correction of EOR
- Tx of amblyopia if present.
Occlusion therapy on the preferred eye. (Direct occlusion) 2hrs daily. Should be monitored
every 4- 6weeks.
- Surgical ocular alignment
occurs at a later age than infantile
Acquired eso/exo
– associated with the activation of Acc.
– attributed partly to either uncorrected hyperopia and/or high Accommodative Convergence/Accommodat ion (AC/A) ratio.
Accommodative esotropia
– not associated w/ accommodative effort
– correction of hyperopia and/or prescribing near add has minimal or no effect
Non-accommodative esotropia
– caused by a mechanical restriction or tightness or a physical obstruction of the EOM
– can either be congenital or acquired
Mechanical eso/exo
– px sometimes manifests diplopia, suppresion, or ARC
– w/ Tx, may either progress, stay the same, or in some cases, improve
– rarely deteriorates to constant exotropia
Intermittent exotropia
Results from a primary sensory deficit or as a result of surgical intervention
Secondary eso/exo
results from visual deprivation or trauma in one eye.
Sensory eso/exo
– occurs after surgical overcorrection
– may result in amblyopia in children and diplopia in adults
Consecutive eso/exo
– angle of deviation is less than 10PD
– constant and usually unilateral
– frequently results from the Tx of a larger scale deviation.
Microesotropia & microexotropia
Designed primarily for screening preschool children (age 2.5 to 5 yrs) for defects of binocular vision.
TNO Test
Enable the examiner to quickly establish whether stereoscopic vision is present at all.
Plates 1-4
Exact determination of stereoscopic sensitivity
Plates 5-7
Equipments used in TNO test
TNO test plates Red-green glasses
Used for the treatment of convergence insufficiency and other anomalies of binocular vision as well as disrupt suppression of one of the eyes.
Brock string exercise