The clinical features of Korean patients with Duane's retraction syndrome.
OBJECTIVE
To describe the clinical features of Duane's retraction syndrome (DRS) in Korean patients.


METHODS
We retrospectively analyzed the 78 DRS cases that presented to our department between 1995 and 2004. The clinical features investigated included sex distribution, laterality, type of presentation, deviation in primary position, anomalous vertical movements, face turn, amblyopia and anisometropia.


RESULTS
There were 38 (48.7%) affected males and 40 (51.3%) females. Left eye predominance (83.3%) was observed, as was type I presentation (85.9%). Orthotropia was found to be the most common primary position in 46 cases (59.0%). Face turn in unilateral DRS was noted in 13 patients (17.1%). There were 6 cases (7.7%) with anisometropia and 4 (5.1%) with amblyopia.


CONCLUSIONS
The clinical manifestations of DRS in our study were different from those of equivalent Caucasian studies yet similar to those previously reported for Asian groups. Racial and regional differences were noted, for which further research is needed to elaborate the reasons and mechanisms.
Department of Ophthalmology, Kim's Eye Hospital, Myung-Gok Eye Research Institute, Konyang University College of Medicine, Seoul, Korea.
Won Ho
WH
Park
Dae Hyun
DH
Son
Sang Won
SW
Yoon
Seung-Hee
SH
Baek
Sang Mook
SM
Kong
D000293:Adolescent; D000328:Adult; D044466:Asian People; D002648:Child; D002675:Child, Preschool; D004370:Duane Retraction Syndrome / Q000150:complications* / Q000208:ethnology / Q000503:physiopathology*; D004948:Esotropia / Q000150:complications*; D005099:Exotropia / Q000150:complications*; D005260:Female; D006801:Humans; D008297:Male; D012189:Retrospective Studies