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surgery_patterns [2021/03/21 20:41] – created Scott Larsonsurgery_patterns [2025/04/18 20:40] (current) – external edit 127.0.0.1
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 ====== Surgery for A and V Patterns ====== ====== Surgery for A and V Patterns ======
 +  * For an A or V pattern without significant oblique dysfunction, moving the horizontal rectus vertically at the time of strabismus surgery can eliminate the pattern 
 +  * A-Pattern 
 +    * > 10 Prism Diopters in Upgaze vs Downgaze 
 +    * Move the medials UP 1/2 to 1 tendon width 
 +    * Move the laterals DOWN 1/2 to 1 tendon width 
 +  * V-Pattern 
 +    * > 15 Prism Diopters in Upgaze vs Downgaze 
 +    * Move the medials DOWN 1/2 to 1 tendon width 
 +    * Move the laterals UP 1/2 to 1 tendon width 
 +  * Surgery on the appropriate oblique muscles if they are dysfuctional can also treat the pattern 
 +  * References: 
 +    * [[https://childrenseye.org/filerun/FileRun/wl/?id=XcaSwx7P4yej0nas70HOL3MBiCPN3hFE | The Effect of Vertical Displacement of Horizontal Muscles on the Deviation in Primary Position. Kutsche and Keech 1988.]] 
 +    * [[https://childrenseye.org/filerun/FileRun/wl/?id=adtG5cinz6fxLxgzVcTgV0l7koOzBJRL | Vertical offsets of horizontal recti muscles in the management of A and V pattern strabismus. Scott, Drummond, Keech 1989.]] 
 + 
 {{:a_v_patterns.png?600 |}} {{:a_v_patterns.png?600 |}}
 +
 +{{tag>strabismus_surgery}}