[Early visual results and mechanism of pseudo-accommodation of the Quatrix aspheric intraocular lens].

Objective: To assess the clinical and visual outcomes of the implantation of the Quatrix intraocular lens (IOL) and investigate the mechanism of pseudo-accommodation of these lens.

Methods: Patients (67 eyes )received cataract surgery were offered the Quatrix IOL (32 eyes) and AR40e IOL (35 eyes). The patients' refractive status, uncorrected and best corrected distance visual acuities were assessed preoperatively, 1 week, 1 month and 3 months after surgery.

[Comparison of optical performance and stability of five different kinds of aspheric IOLs].

Objective: To compare the optical performance and stability of different kinds of aspheric IOLs.

Methods: It was a retrospective case series study. Five different kinds of aspheric IOLs were implanted into 130 eyes after cataract operation, including hydrophilic acrylic IOLs (AO, Bausch&Lomb), 25 eyes; hydrophilic acrylic IOLs (20H, Rayner), 20 eyes; 3-piece hydrophilic acrylic IOLs (PY60AD, HOYA), 30 eyes; acrylic IOLs (ZC, B00, AMO), 25 eyes; and 3-piece hydrophobic acrylic IOLs (Tecnis 9003, ZA9003, 30 eyes).

[Comparison of tilt and decentration of four different kinds of aspheric intraocular lenses implantation].

Objective: To measure tilt and decentration of four different kinds of aspheric intraocular lenses (IOLs) with Scheimpflug imaging systems after cataract surgery.

Methods: One hundred and thirty eyes undertaken cataract surgery and IOLs implantation, including four different kinds of aspheric IOLs [1-piece hydrophilic acrylic IOLs (Akreos AO, Bausch & Lomb); 3-piece acrylic IOLs (Tecnis9003, AMO); 1-piece acrylic IOLs (SN60WF, Alcon) and 1-piece hydrophilic acrylic IOLs (920H, Rayner)] and 3-piece acrylic spherical IOLs (AR40e, AMO), were retrospectively reviewed. Tilt and decentration of IOLs were measured using Scheimpflug system (Pentacam, Oculus) and analyzed with Image-pro plus 6.

[Clinical study for postoperative visual acuity in cataract patients with the potential acuity meter].

Objective: To study a new domestic potential acuity meter (PAM) for predicting visual acuity (PVA) in patients with cataracts and to compare the results to that measured by PAM-1000 and Lotmar.

Methods: One hundred and fifty cataract eyes were enrolled in this study. PVA was evaluated with three different dioptometers before the surgery and compared to actual best corrected visual acuity (BCVA) obtained two months after the surgery.