The Treatment of Esodeviation with Abduction Deficiency Caused by Recurrent Pterygium

The recurrent pterygium can be caused by repeating excisions for simple pterygium. The severe conjunctival cicatrization on the area of the medial rectus muscle limits abduction and results in diplopia and it is one of the causes of acquired retraction syndrome. We experienced two patients who have marked abducticn limitation and diplopia in all directions of gaze by recurrent pterygium. In order to eliminate these troblesome symptoms and signs with only one surgery, we performed conjunctival autograft transplantation in one patient and on the other patient with bilateral recurrent pterygium, the procedure was performed with resection of the lateral rectus using adjustable suture at one time. The limitation of ocular movement and diplopia were completely gone postoperatively.

Consecutive Cyclic Esotropia Following Surgery for Intermittent Exotropia

Cyclic esotropia is a rare condition, first mentioned by Burian in 1958, in which orthophoria is regularly followed by constant deviation on rhythmic pattern. The periodicity would suggest a biologial clock mechanism. Consecutive cyclic esotropia following strabismus surgery is extremely rare. Only three cases of consecutive cyclic esotropia following surgery for intermittent exotropia have been reported We report one case of consecutive cyclic esotropia in an 8-year-old girl who underwent surgery for intermittent exotropia. The periodic esodeviation was treated with bimedial rectus recession. We suggest the overcorrection after surgery for intermittent exotropia would cause the periodicity by biological clock mechanism when the biorhythm of the patient is in an unstable and dangerous state.