A cartridge insertion technique was associated with greater final incision size and changes in incision size than a wound-assisted technique in the implantation of a toric IOL, according to a study.
The prospective study included 144 eyes of 144 patients who underwent coaxial phacoemulsification with implantation of an AcrySof IQ toric IOL (Alcon) through a 2.2-mm clear corneal incision. A direct cartridge insertion technique was performed in 72 eyes, and a wound-assisted insertion technique was performed in 72 eyes.
Investigators analyzed relationships between incision size, spherical and cylindrical powers, corneal hysteresis and corneal resistance factor.
Incision size increased in 30 eyes (41.7%) in the wound-assisted insertion group and 71 eyes (98.6%) in the cartridge incision group. Mean incision size after IOL insertion was 2.27 mm in the wound-assisted group and 2.37 mm in the cartridge insertion group; the difference was statistically significant (P < .01).
Final incision size correlated with IOL spherical power, but not with toricity or corneal biomechanical features, in both groups.
Disclosure: The study authors have no relevant financial disclosures.