Analysis of ocular cyclotorsion in lying position after peribulbar block and topical anesthesia

Abstract

Purpose: Evaluate the magnitude of cyclotorsion during cataract surgery in patients with indication for intraocular toric lenses comparing the results after peribulbar and after topical anesthesia.Methods: This prospective study comprised 112 eyes that underwent cataract surgery with implantation of toric intraocular lens by topical anesthesia or peribulbar block. We estimated how many degrees of cyclotorsion occurred after topical anesthesia and peribulbar block with the patient in supine position. A tag was performed in the position of 180 degrees of the right eye and zero degrees of the left eye, with the patient seated. Afterwards, it was requested a change to the supine position and then a new dial in 180 and zero degrees respectively from right and left eye were made. Results: The current study demonstrated that patients submitted to cataract surgery with implantation of toriclens under local anesthesia showed approximately 6.89 degrees of incyclotorsion (82 eyes) and 6.93 degrees of excyclotorsion (38 eyes) and a mean of cyclotorsion of 6.91 degrees. Patients undergoing peribulbar block showed 5.68 degrees of incyclotorsion (73 eyes) and 4.81 degrees of excyclotorsion (47 eyes) and a mean of cyclotorsion of 4.92 degrees. Conclusion:Through the study we can see that the movement of incyclotorsion in patients undergoing peribulbar anesthesia was lower when compared to topical anesthesia. This is relevant since the greater the incyclotorsion, the lower the predictability of the surgery and the lower the chance of obtaining excellent results in the final refractometric.

Hand-Held Nidek versus Table-Mounted Huvitz Autorefractors and Their Agreement with Subjective Refraction in Adults

“…Cyclotorsions occur when the eye rotates around the optical axis 6 , 7 and depend on the orientation of the body. 8 One type of cyclotorsion is the static type which occurs when the patient changes position from an upright or sitting position to supine position.…”

“…2 Autorefraction also plays a major role in following the progress of refractive errors as well as its value in screening for refractive errors in children. [3][4][5] Cyclotorsions occur when the eye rotates around the optical axis 6,7 and depend on the orientation of the body. 8 One type of cyclotorsion is the static type which occurs when the patient changes position from an upright or sitting position to supine position.…”