Abstract:AIM: To investigate the effect of decentration tilt of intraocular lens on higher-order aberrations(HOAs)in patients with high myopic cataract after surgery.
METHODS: Totally 100 patients(100 eyes)with high myopic cataract were retrospectively analyzed and treated with phacoemulsification and intraocular lens implantation. Then follow up was conducted 3 mo after surgery. The Pentacam 3D anterior segment analyzer was used to measure the tilt degree and decentration value of intraocular lens. The i-Trace aberration analyzer was used to collect HOAs from patients under 3.0 mm and 5.0 mm pupils. Pearson linearity was used to analyze the correlation of the decentration tilt of intraocular lens with HOAs.
RESULTS: The tilt degree was 1.49°±0.32°, decentration value was 0.33±0.05 mm, and the tilt degree was positively related to decentration value of intraocular lens. When the pupil diameter was 3 mm or 5 mm, the postoperative tilt degree of intraocular lens was positively related to total HOAs(r=0.351, P=0.003; r=0.287, P=0.015)and total coma(r=0.389, P=0.002; r=0.332, P=0.005), while not correlated with total spherical aberration(r=0.382, P=0.235; r=0.149, P=0.207). In addition, the decentration value of intraocular lens not correlated with total HOAs(r=0.011, P=0.930; r=-0.146, P=0.215), total coma(r=0.023, P=0.856; r=-0.102, P=0.393), and total spherical aberration(r=0.085, P=0.476; r=-0.165, P=0.162).
CONCLUSION: The tilt of intraocular lens in high myopic cataract patients after surgery can affect total HOAs and total coma, thereby affecting their postoperative vision.
