Esodeviations



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ESODEVIATIONS


EWA OLESZCZYŃSKA-PROST (POLAND)

1.Pseudoesotropia

2.Esophoria

3.Congenital esotropia

4.Nystagmus blockage syndrom

5.Accommodative esotropia



6.Acute aquired esotropia

7.Cyclic esotropia

8.Divergence insufficiency esotropia

9.Spasm of the near reflex

10.Deprivation (sensory) esotropia

11.Consecutive esotropia


Pseudoesotropia


Pseudoesotropia is a condition, which only simulates squint. The eyes are straight ,however they appear to be crossed. In very young children wide, flat bridge of the nose and small folds of the eyelid skin or narrow interpupillary distance are frequent. Such a state may simulate convergent strabismus. Often we observed the abnormality of the eyeballs structure or its placement in the orbits or changes in the eye protective apparatus. Pseudoesotropia present, when the visual axis (connecting fixing object with the fovea) is different then the optic axis ( the line running through the center of cornea and pupil). The angle at which these axes crossed is called gamma angle. Fig1

Fig.1 Pseudoesotropia


Esophoria


Esophoria is a latent tendency for the eyes to deviate. This latent deviation is normally controlled by fusional mechanisms which provide binocular vision. Deviation of the visual axis results from the fusion interruption, which is not able to maintain binocular vision any longer.

Factors predisposing to decompensated esophoria are listed below:

uncorrected refraction error

 anisometropia.

 transient cover of one eye

emotional or physical Srock



 fatigue or asthenia ( severe infections)

Clinical findings:

Investigations:


Fig 2. Red Maddox rod test


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