Visual acuity and refraction with a diffractive multifocal toric intraocular lens.
OBJECTIVE
To evaluate clinical outcomes and optical performance of the AT Lisa 909M diffractive multifocal toric intraocular lens (IOL).


METHODS
Multicenter study.


METHODS
Cohort study.


METHODS
The measured outcomes included refractive error; distance, near (40 cm), and intermediate (60 cm and 80 cm) visual acuities; defocus curve; rotational stability; and monocular and binocular photopic and mesopic contrast sensitivity. Astigmatism was evaluated by Alpins vector analysis.


RESULTS
The multifocal toric IOL was implanted in 284 eyes of 142 patients. At 6 months, 89.4% of eyes were within ±1.00 diopter (D) of emmetropia. The mean refractive cylinder decreased from -2.39 D ± 1.48 (SD) to -0.49 ± 0.53 D; it was lower than 1.00 D in 80.9% of eyes. The mean visual acuities (logMAR) were monocular uncorrected distance 0.16 ± 0.22, monocular corrected distance 0.04 ± 0.15, binocular corrected distance -0.00 ± 0.09; monocular uncorrected near 0.21 ± 0.22, monocular corrected near 0.08 ± 0.16, binocular distance-corrected near 0.07 ± 0.14; intermediate at 60 cm (80 cm): monocular uncorrected 0.16 ± 0.21 (0.09 ± 0.21), monocular distance corrected 0.13 ± 0.19 (0.07 ± 0.20), and binocular distance corrected 0.07 ± 0.17 (0.00 ± 0.18). At 3 months and 6 months, 95.8% of IOLs showed no rotation over 5 degrees.


CONCLUSIONS
This is the largest study yet on the first commercially available diffractive multifocal toric IOL. Results confirm its efficacy, predictability, and safety in restoring distance, near, and intermediate vision and allowing patients with significant levels of corneal astigmatism to achieve spectacle independence.


BACKGROUND
No author has a financial or proprietary interest in any material or method mentioned.
From the Ophthalmic Unit (Bellucci, Santin, Cargnoni), Department of Neurosciences, Hospital and University of Verona, Italy; the Department of Ophthalmology (Bauer, Visser, Nuijts), University Hospital Maastricht, the Netherlands; Centre for Sight (Daya), East Grinstead, United Kingdom. Electronic address: robbell@tin.it.
Roberto
R
Bellucci
Noel J C
NJ
Bauer
Sheraz M
SM
Daya
Nienke
N
Visser
Giorgio
G
Santin
Miriam
M
Cargnoni
Rudy M M A
RM
Nuijts
D001251:Astigmatism / Q000150:complications / Q000503:physiopathology; D002386:Cataract / Q000150:complications; D015331:Cohort Studies; D003315:Cornea / Q000503:physiopathology; D019781:Corneal Topography; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011474:Prosthesis Design; D019591:Pseudophakia / Q000503:physiopathology*; D012029:Refraction, Ocular / Q000502:physiology*; D015203:Reproducibility of Results; D016896:Treatment Outcome; D014792:Visual Acuity / Q000502:physiology*