Clinical Analysis of Congenital Exotropia.

Lee, Ju Rak; Choi, Young Rak; Roh, Young Bae

Original Article

Journal of the Korean Ophthalmological Society 2000;41(1):230-234.
Published online January 1, 2000.

Clinical Analysis of Congenital Exotropia.

Ju Rak Lee, Young Rak Choi, Young Bae Roh

Department of Ophthalmology, College of Medicine, Pusan National University.

선천 외사시의 임상적 분석

이주락(Ju Rak Lee),최영락(Young Rak Choi),노영배(Young Bae Roh)

Abstract

Constant exotropia is uncommon during the first year of life.We investigated characteristics, surgical outcome and associated ocular abnormalities in patients who had an exodeviation during the first year of life. The charts of 18 patients who were diagnosed as congenital exotropia before 1 year old were reviewed.We etrospectively analyzed 10 healthy patients who did not have associated systemic or ocular abnormalities and were followed for at least 3 months after surgery. The mean follow-up period was 1.2 years[range, 3 months to 3.5 years]and all of them had an exodeviation of 25 prism diopter[PD]or more[mean, 37.5PD, SD 10.6PD].Preoperative DVD and inferior oblique muscle overaction were found in 1 patient respectively. Surgery was performed in 9 cases and botulinum toxin was injected in 1 case.Seven patients[70%]showed stable alignment within 10PD with one operation and one patient required reoperation.Postoperative dissociated vertical deviation and inferior oblique muscle overaction were found in each 1 patients. Congenital exotropia has large deviation and may be associated with inferior oblique muscle overaction or dissociated vertical deviation as infantile esotropia and has stable alignment with single operation.But unlike infan-tile esotropia, nystagmus is extremely rare.

Key Words: Congenital;Exotropia;Ocular abnormalities;Surgery