The Effect of Slanted Recession of Horizontal Muscle on Horizontal Strabismus With Abnormal Accommodative Convergence /Accommodation Ratio (AC/A)

Status

UNKNOWN

Phases

Phase 2Phase 3

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03555045

Enrollment

100

Registered

2018-06-13

Start date

2017-02-01

Completion date

2019-05-31

Last updated

2018-06-13

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

Conditions

Horizontal Strabismus With High AC/A Ratio

Brief summary

Different methods was tried to treat high AC/A strabismus cases;such as prescription of bifocal glasses in esotropia,recession of horizontal muscles with posterior fixation sutures,more recession than needed for far deviation(augmented recession),recession and pulley fixation and slant recession. Different results was reported for any type of above methods. In recent studies,slanted recession was applied for high AC/A in esotropic cases and success rate of 67% was reported.but there was no unanimity for procedure of choice. Since slant recession method is simpler and has low side effect than the other methods,therefore in this study the investigators want to peruse the outcome of this method on high AC/A horizontal strabismus.

Interventions

PROCEDUREconducting the slanted recession technique on the superior and inferior poles

conducting the slanted recession technique on the superior and inferior poles of the muscle based on far and near deviations.

PROCEDUREconducting the augmented recession technique on the muscle

conducting the augmented recession technique on the muscle for 1 to 1.50 mm more compared with the standard method.

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

DOUBLE (Subject, Caregiver)

Eligibility

Sex/Gender

ALL

Age

6 Years to 80 Years

Healthy volunteers

Yes

Inclusion criteria

* all patients with horizontal strabismus that the different between far deviation and near deviation is more than 10 pd

Exclusion criteria

* all patients who had history of surgery on horizontal muscles and patients with pseudo high AC/A ratio.

Design outcomes

Primary

Measure	Time frame	Description
far-near deviation difference	90 days after surgery	difference between the far and near deviations

Secondary

Measure	Time frame	Description
success rate of surgery	90 days after surgery	in cases with difference of far and near deviation less than 10 prism diopters

Countries

Iran

Contacts

Primary Contactzhaleh rajavi, MD

labbafi@hotmail.com9822591616

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026