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Trifocal IOLs in cataract patients after previous experience with laser vision correction treatment: two year follow-up

Poster Details

First Author: M.Piovella ITALY

Co Author(s):    G. Scaltrini                    

Abstract Details


To evaluate visual and optical performances of cataract eyes after phacoemulsification and trifocal Intraocular Lens (IOL) AT LISA tri 839 MP and AT LISA tri toric 939MP trifocal IOLs (Carl Zeiss Meditec) in patient that experienced previous laser vision correction. Evaluation of a new method to improve visual outcomes based on eye selection and not on patients habits.


C.M.A. Centro Microchirurgia Ambulatoriale Monza – Italy


16 eyes of 10 patients mean age: 55.81 ± 8.50 years that experienced previous laser vision correction ,underwent uncomplicated phacoemulsification and trifocal IOL implantation. Preop Sphere Equivalent was -0,53 ± 3,59. BCDVA 20/22 ± 3,56. Preloaded IOL was implanted through a 2.4 corneal incision. Postoperatively, the following visual and refractive parameters were measured: distance (5m) near (40cm) and intermediate (80 cm) visual acuity, corneal topography and aberrometry, contrast sensitivity and defocus curve. Follow-up examinations were performed at day two, one week one month 3 months 6 months one year two year.


At one year BCDVA was 20/22 ± 4.85. Sphere Equivalent was -020 ± 0,55. Residual astigmatism was -0,07 ± 0,61. Uncorrected near vision 20/23 At two years BCDVA was 20/20,91 ± 3,02. Sphere Equivalent was -018 ± 0,45. Residual astigmatism was -0,02 ± 0,24. . Uncorrected near vision 20/22. 92% of eyes achieved post operative refractive results within ± 0.50 diopter (sph equivalent)


Trifocal Lens provided good distance and near as well as intermediate visual acuity also in cataract patients that experienced laser vision correction decades ago. Only patient with regular cornea after laser vision correction were included in this study. To be included in the group with trifocal IOLs implants biometry needed to be performed at high standard level and detecting no significant outcome differences after multiple attempts.

Financial Disclosure:

receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented, travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented

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