Bilateral recession of superior rectus muscles: its influence on A and V pattern strabismus.
OBJECTIVE
To determine whether bilateral superior rectus recession modifies A and V pattern strabismus.


METHODS
Three patients with V patterns and eight patients with A patterns underwent bilateral superior rectus recession with neither oblique muscle surgery nor vertical displacement of the horizontal rectus muscles. Another three patients with A patterns underwent simultaneous superior oblique tenotomy and superior oblique recession.


RESULTS
Two of the patients with V patterns demonstrated an increase in the V pattern after surgery; one was unchanged. Five of the patients with A patterns converted to V patterns after surgery. In the remaining three patients the pattern was eliminated. The three patients who underwent superior oblique tenotomy along with superior rectus recession had large shifts toward V pattern (mean shift, 40 delta).


CONCLUSIONS
Bilateral superior rectus recession tends to increase V patterns and reduce A patterns. Superior rectus recession may be synergistic with superior oblique tenotomy in collapsing an A pattern.
Melek
N B
NB
Pediatric Ophthalmology Foundation, Buenos Aires, Argentina.
Mendoza
T
T
Ciancia
A O
AO
D000065:Accommodation, Ocular / Q000502:physiology*; D005133:Eye Movements / Q000502:physiology*; D006801:Humans; D009801:Oculomotor Muscles / Q000601:surgery*; D013285:Strabismus / Q000503:physiopathology* / Q000601:surgery