An analysis of torsion in superior oblique palsy

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

ANZCTR

Registry ID

ACTRN12609000582257

Enrollment

Registered

2009-07-14

Start date

2009-07-09

Completion date

Unknown

Last updated

2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

The purpose of this study is to investigate the difference in torsion in primary position (head straight, looking straight ahead) and compare it to measurements in 15 and 30 degrees in downgaze (head straight, eyes looking downwards). It is hypothesised that torsion will increase in downgaze, especially in cases of bilateral superior oblique palsy. Therefore, we hope to establish an amount of torsion that differentiates bilateral and unilateral superior oblique palsy. This will help clinicians plan treatment and hopes to avoid cases of "masked" superior oblique palsy (where after surgery for a unilateral superior oblique palsy, a superior oblique palsy is uncovered in the other eye).

Interventions

Image tilt (torsion) will be observed using three commonly used clinical measures of torsion; the synoptophore, double Maddox rod and Torsionometer. These three tests all measure in degrees the amount of torsion as subjectively indicated by the participant.

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

Patients with acquired unilateral or bilateral superior oblique palsy

Exclusion criteria

Age

Outcome results