Position of toric intraocular lens and rotational stability during cataract phacoemulsifca-tion in patients with astigmatism
Year: 2019, volume 15 Issue: №2 Pages: 506-510
Heading: Ophtalmology Article type: Original article
Authors: Kulikova I.L., Timofeyeva N.S.
Organization: Cheboksary Branch of S. Fedorov Eye Microsurgery Federal State Institution
Heading: Ophtalmology Article type: Original article
Authors: Kulikova I.L., Timofeyeva N.S.
Organization: Cheboksary Branch of S. Fedorov Eye Microsurgery Federal State Institution
Summary:
Purpose: to analyze the position of toric intraocular lens Acrys of IQ Toric in the vertical and horizontal plane and rotational stability during cataract phacoemulsifcation in patients with astigmatism. Material and Methods. The results of implantation of toric intraocular lens (TIOL) (Acrys of IQ Toric model) in 38 patients (38 eyes) after cataract phacoemulsifcation were studied. Parameters of rotational stability and the position of TIOLs (decentration and tilt) in the capsule bag relative to the vertical and horizontal plane 2 months after the operation were also studied. Results. Average values of uncorrected visual acuity were 0.8 in more than 50 % of cases. Values of decentration and tilt of the TIOL in the capsular bag did not exceed the clinically signifcant value and amounted to an average of 0.4±0.1 mm and 0.6±0.2° respectively in the horizontal plane, and 0.3±0.1 mm and 0.5±0.1° in the vertical plane. The average rotation angle of TIOL after 2 months of observation was 4.8±4.1°, with a maximum rotation angle of 19°. Correlation analysis revealed the presence of a statistically signifcant relationship of average force between the residual cylinder and the horizontal slope (r=0.52; p=0.02) and the residual cylinder and vertical decentralization (r=0.52; p=0.03). Conclusion. In most cases the parameters of TIOL position in the capsule bag (decentration and tilt) and rotational stability did not exceed clinical signifcance providing high functional results. The residual cylinder correlated with the angle of inclination and decentralization of the optical part of the intraocular lens.
Keywords: decentration, phacoemulsification of cataracts, rotational stability, tilt, toric intraocular lens
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