The Effect of Slanted Recession of Horizontal Muscle on Horizontal Strabismus With Abnormal Accommodative Convergence /Accommodation Ratio (AC/A)
- Conditions
- Horizontal Strabismus With High AC/A Ratio
- Registration Number
- NCT03555045
- Lead Sponsor
- Shahid Beheshti University of Medical Sciences
- 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.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- UNKNOWN
- Sex
- All
- Target Recruitment
- 100
- all patients with horizontal strabismus that the different between far deviation and near deviation is more than 10 pd
- all patients who had history of surgery on horizontal muscles and patients with pseudo high AC/A ratio.
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Primary Outcome Measures
Name Time Method far-near deviation difference 90 days after surgery difference between the far and near deviations
- Secondary Outcome Measures
Name Time Method success rate of surgery 90 days after surgery in cases with difference of far and near deviation less than 10 prism diopters
Trial Locations
- Locations (1)
Ophthalmic Research Center
🇮🇷Tehran, Iran, Islamic Republic of
Ophthalmic Research Center🇮🇷Tehran, Iran, Islamic Republic ofzhaleh Rajavi, MDContact9822591616labbafi@hotmail.com