Automated refraction after trifocal and trifocal toric intraocular lens implantation.
BACKGROUND
To analyze the correlation between automated refraction and manifest refraction after implantation of a trifocal intraocular lens or its toric version.


METHODS
This cross-sectional study involved 105 eyes of 105 patients. Subjects were divided in two groups: 62 with trifocal (AcrySof PanOptix) and 43 with trifocal toric (AcrySof PanOptix Toric) intraocular lenses. Automated refraction was employed as starting point for obtaining the manifest refraction. Automated refraction and manifest refraction measurements were analyzed and compared using the vector analysis 3 months after the surgery.


RESULTS
In both groups, the higher differences between automated refraction and manifest refraction measurements were found for the cylinder and the spherical equivalent (M). Cylinder values for PanOptix were: -0.60 ± 0.36 D with automated refraction and -0.17 ± 38 D with manifest refraction (p < 0.001); for PanOptix Toric, the values were: -0.49 ± 0.31 D with automated refraction and -0.05 ± 0.21 D with manifest refraction (p < 0.001). M values for PanOptix were: -0.23 ± 0.31 D with automated refraction and -0.03 ± 0.16 D with manifest refraction (p < 0.001); for PanOptix Toric, the values were: -0.13 ± 0.40 D with automated refraction and 0.01 ± 0.12 D with manifest refraction (p < 0.001). For the PanOptix group, intraclass correlation coefficients were: 0.51 (sphere), 0.64 (cylinder), 0.42 (M), 0.62 (J0), and 0.37 (J45). For the PanOptix Toric group, the intraclass correlation coefficients were: 0.39 (sphere), 0.61 (cylinder), 0.39 (M), 0.53 (J0), and 0.09 (J45).


CONCLUSION
The results of this study suggest that patients implanted with the trifocal and the trifocal toric intraocular lens under study showed similar automated refraction results between them, with a slight trend to more negative amounts of cylinder and M. Nevertheless, clinicians should carefully confirm all parameters of the refraction with manifest refraction.
['Rementería-Capelo|Laureano A|LA|', 'García-Pérez|Jorge L|JL|', 'Contreras|Inés|I|', 'Blázquez|Vanesa|V|', 'Ruiz-Alcocer|Javier|J|https://orcid.org/0000-0003-1874-6014']
D001251:Astigmatism D003430:Cross-Sectional Studies D006801:Humans D019654:Lens Implantation, Intraocular D007910:Lenses, Intraocular D018918:Phacoemulsification D011446:Prospective Studies D011474:Prosthesis Design D019591:Pseudophakia D012029:Refraction, Ocular
refraction Intraocular lens axial length biometry clinical tests instruments intraocular lens calculation for primary optics secondary intraocular lens