[Study of torsional movements in refractive surgery].
OBJECTIVE
To observe torsional movements of the eye in refractive surgery, and their possible consequences in the surgery outcome.


METHODS
In a prospective study, 49 eyes of 40 patients were submitted to surgical correction of astigmatism, by the LASIK technique. Patients were divided in two groups based on the cylindric power. Group A from -0.25 to -2.00D; group B from -2.25 to -6.00D. The occurrence of torsional movements was recorded in all patients, and based on this, the axis of treatment was corrected.


RESULTS
Mean torsion was 3.5 masculine +/- in group A; and 4.5 masculine+/- in group B. There was no statistical difference between the two groups.


CONCLUSIONS
Torsional movements occurred in almost all cases, and therefore should be corrected if one desires best results. This is specially important in matching personalized data captured in wave front analyzers for the eye at the time of surgery.
Rocha
Guilherme José Nunes Marques
GJ
Hospital de Olhos de Paraná, Rua Cel. Dulcídio 199, 4o. andar, CEP 80420-170 Curitiba, PR. guigojnmr@hotmail.com
Siqueira Bisneto
Otávio
O
Moreira
Hamilton
H
D001251:Astigmatism / Q000601:surgery*; D005133:Eye Movements / Q000502:physiology*; D005260:Female; D006801:Humans; D020731:Keratomileusis, Laser In Situ / Q000295:instrumentation; D008297:Male; D011446:Prospective Studies; D012737:Sex Factors; D014102:Torsion Abnormality