INTERMITTENT DIVERGENT SQUINT PDF

INTERMITTENT DIVERGENT SQUINT PDF

Intermittent Exotropia Caused by Common Near Vision Disorder: Exotropia — a common type of strabismus — is the outward deviation of an eye (eye turns. Exotropia is a form of strabismus (eye misalignment) in which one or both of the eyes Children with intermittent exotropia commonly close or squint one eye at. Exotropia, or divergent squint, refers to an eye that turns or diverges outwards. Exotropia may occur from time to time (intermittent exotropia) or may be constant.

Author: Nihn Moogukinos
Country: Maldives
Language: English (Spanish)
Genre: Environment
Published (Last): 8 June 2009
Pages: 444
PDF File Size: 16.31 Mb
ePub File Size: 7.26 Mb
ISBN: 864-5-12761-834-6
Downloads: 33463
Price: Free* [*Free Regsitration Required]
Uploader: Dizilkree

Age is not the main determining factor for exotropia surgery. These divergeny are the ones who will continue to have a distance-near disparity post-operatively, and may require bifocal spectacles after surgery for a consecutive esotropia at near.

INTERMITTENT EXOTROPIA:

Bilateral lateral rectus recession was done using hang back technique. Thus the patient should be followed over time to determine whether their exotropia is stable or deteriorating.

The child developed suqint in her neonatal period for which she received phototherapy and exchange transfusion. Levels 2—0 are graded as the worst of three rapidly successive trials. Overcorrecting minus lens therapy for treatment of intermittent exotropia. Distance measurement exceeds near measurement, even after 60min.

Diseases of the human eye H00—H59 — The brain’s ability to see three-dimensional objects depends on proper alignment of the eyes.

Oblique overaction – Intermittent exotropia may be associated with inferior or superior oblique overaction and thus A- and V-pattern. For the similar condition, where the eyes deviate inward rather than outwardsee esotropia.

Intermittent Divergent Squint in Prematurity and Its Neurophysiological Aspects

Visual feature integration and the temporal correlation hypothesis. However older children may have better long term outcomes.

Contrary to the earlier practice of patching one eye for 24 hrs it is now found that patching the eye for 30 min. Investigative Ophthalmology and Visual Science ; All affected family members will not necessarily share exactly the same type of strabismus, meaning that exotropia may not be the only kind of misalignment possible. Conflicts suqint interest There are no conflicts of interest. Table 2 Burian’s classification of intermittent divergent squint. What squnt congenital exotropia? Unsourced material may be challenged and removed.

  BENJAMIN FREEDMAN REDE PDF

Binocular vision refers to the brain’s ability to see objects with both eyes simultaneously. Spontaneous impulse activity of rat retinal ganglion cells in prenatal life. ETIOLOGY Innervational Factors and Mechanical Factors Duane championed the view that exodeviations are caused by an innervational imbalance that upsets the reciprocal relationship between active convergence and dviergent mechanisms 7.

The tropia phase of intermittent exotropia is most noticeable when the child is tired or sick or when they are day dreaming. When detected early, amblyopia, and loss of binocularity associated with strabismus is treatable. Please help improve this article by adding intermirtent to reliable sources.

Exotropia (divergent squint)

Subjective Methods Home Control: Characteristics of suppression in strabismus. Active anti-suppression and diplopia awareness techniques can be used in cases divdrgent suppression.

Can exotropia be treated with prisms in the glasses? Abstract Intermittent distance exotropia is a deviation characterized by an exophoria at near fixation and manifest exotropia at distance fixation.

Management of Intermittent exotropia: Common sense approaches may help to control intermittent exotropia. A third trial of s occlusion is performed, covering the eye that required the longest time to refuse.

However they do caution that in visually immature children a slight undercorrection should be attempted to prevent occurrence of monofixation syndrome from consecutive esotropia C oncave lenses controlling an exotropia In cases where the exotropia persists after exercises and minus lenses, then strabismus squint surgery may be required. Strabismus surgery is sometimes recommended if the exotropia is present for more than half of each day or if the frequency is increasing over time.

Newcastle Control Score NCS was used to grade the extent of IDEX before, during, and after treatment A score of 3 or greater was taken to indicate a requirement for treatment intervention.

  MAGIE DRACONIQUE PDF

Intermittent Divergent Squint in Prematurity and Its Neurophysiological Aspects

Some have proposed the use of alternate day, alternate eye patching to help control exotropia. You may only notice one particular eye drifting out, or it may be either eye that deviates, known as an alternating exotropia.

Intermittent exotropia, overcorrecting minus lenses, and the Newcastle scoring system. Does exotropia run in families?

According to Donders this constant under stimulation of convergence may cause an exodeviation to develop Following surgery, corrective eyeglasses may be needed and, in many cases, further surgery is required later to keep the eyes straight. An unusually large overcorrection with gross limitation of ocular motility noted on the first postoperative day is possibly due to lost or slipped lateral rectus muscle.

However, in some people it may become more frequent or even progress to the point of becoming constant. Squint, its causes, pathology and treatment ed.

During the tropia phase when the exotropia is manifest most patients will show large regional suppression of the temporal retina. Knapp and Jampolsky have postulated a theory that probably there occurs a progression from exophoria to bilateral, bitemporal hemiretinal suppression to intermittent exotropia.

These patients with reduced angle of strabismus at near appear to have a slow to dissipate proximal fusion mechanism that prevents them from manifesting their true near deviation during a brief cover test. Simulated or Pseudo-divergence Excess: Binocular vision refers to the brain’s ability to see objects with both eyes simultaneously.