Tilt and decentration after primary and secondary transsclerally sutured posterior chamber intraocular lens implantation

Purpose: To evaluate tilt and decentration after primary and secondary implantation of transsclerally sutured posterior chamber intraocular lenses (PC IOLs). Setting: Dokuz Eylul University Medical School, Department: Of Ophthalmology, izmir, Turkey. Methods: Fifty-six consecutive eyes of 53 patients who had implantation of transsclerally sutured PC IOLs were prospectively included in the study. Intraocular lens tilt and decentration after primary (14 eyes) and secondary (42 eyes) implantation were compared quantitatively using Purkinje images. Results: The mean IOL tilt was 6.09 degrees +/- 3.80 (SD) in all eyes, 5.71 +/- 3.41 degrees in the primary implantation group, and 6.22 +/- 3.94 degrees in the secondary implantation group. The mean IOL decentration was 0.67 +/- 0.43 mm (range 0 to 2.5 mm), 0.59 +/- 0.38 mm, and 0.69 +/- 0.45 mm, respectively. There were no statistically significant differences between the primary and secondary implantation groups in decentration or tilt. Decentration greater than 1.0 mm was present in 7 eyes (16.7%) after secondary implantation and in 1 eye (7.1%) after primary implantation. Tilting of more than 10 degrees was present in 7 eyes (16.7%) and 2 eyes (14.2%), respectively. There were no statistically significant differences between the 2 groups in decentration greater than 1.0 mm (chi square = 0.194, P = .834) or in tilting greater than 10 degrees (chi square = 0.834, P = .659). Conclusions: Clinically significant IOL tilt or decentration was rare after transscleral implantation. There were no differences in tilt or decentration between primary and secondary implantation. J Cataract Refract Surg 2001; 27:227-232 (C) 2001 ASCRS and ESCRS.