Relationship of hypertropia and excyclotorsion in superior oblique palsy.
OBJECTIVE
To evaluate the correlation between hypertropia and excyclotorsion in acquired superior oblique palsy (SOP).


METHODS
Thirty-one patients with acquired unilateral SOP were recruited for this study. The torsional angle of each patient was assessed via one objective method (fundus photography) and two subjective methods (double Maddox rod test and major amblyoscope). The patient population was divided into two groups (concordance group, n = 19 and discordance group, n = 12) according to the correspondence between the hypertropic eye (paralytic eye) and the more extorted eye (non-fixating eye), which was evaluated by fundus photography.


RESULTS
The mean value of objective torsion was 5.09° ± 3.84°. The subjective excyclotorsion degrees were 5.18° ± 4.11° and 3.65° ± 1.93° as measured by double Maddox rod test and major amblyoscope, respectively. Hypertropia and the excyclotorsional angle did not differ significantly between the groups (p = 0.257). Although no correlation was found in the discordance group, the concordance group showed a significant and positive correlation between hypertropia and excyclotorsion (p = 0.011).


CONCLUSIONS
Torsional deviation was not related to hypertropia. However, in the concordance patients in whom the hypertropic eye showed excyclotorsion, a significant positive correlation was found between hypertropia and excyclotorsion.
Department of Ophthalmology, Kim's Eye Hospital, Konyang University College of Medicine, Seoul, Korea.
Jung Jin
JJ
Lee
Ko I
KI
Chun
Seung-Hee
SH
Baek
Ungsoo Samuel
US
Kim
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D003941:Diagnostic Techniques, Ophthalmological; D005133:Eye Movements; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009801:Oculomotor Muscles / Q000503:physiopathology*; D013508:Ophthalmologic Surgical Procedures / Q000379:methods*; D009886:Ophthalmoplegia / Q000209:etiology* / Q000503:physiopathology / Q000601:surgery; D012189:Retrospective Studies; D013285:Strabismus / Q000209:etiology* / Q000503:physiopathology / Q000601:surgery; D016896:Treatment Outcome; D020432:Trochlear Nerve Diseases / Q000150:complications* / Q000503:physiopathology / Q000601:surgery; D055815:Young Adult
Major amblyoscope; Noncomitantsuperior oblique palsy; Strabismus; Torsion