Purpose: To evaluate the depth of focus in post-LASIK patients after the implantation of two models of a new inverted meniscus hyper-aspheric intraocular lens (IOL) ArtIOLs® 40 and ArtIOLs® 70 (ArtIOLs lenses by Voptica SL, Murcia, Spain). In patients without previous ocular surgery, the ArtIOLs® increased the depth of focus by introducing different amount of negative spherical aberrations (SA). We explored how the presence of positive values of corneal SA in post-LASIK patients could affect the visual outcomes with ArtIOLs®.
Setting/Venue: Oftalvist clinic of Murcia, Spain; University of Murcia, Spain
Methods: Seven cataract patients were implanted bilaterally with ArtIOLs® 40 and ArtIOLs® 70 IOLs to induce low and moderate values of spherical aberration respectively. All patients had previously undergone LASIK surgery to correct their myopia. The cataract surgery was performed first in the dominant eye with ArtIOLs® 40 and a week later in the fellow eye with ArtIOLs® 70. One month after the last surgery best-corrected (CDVA) and uncorrected (UDVA) distance visual acuity (LogMAR scale) were measured monocularly and binocularly. Defocus curve was measured from +1.00 D to -3.00 D in 0.50 D steps. UCVA was measured at far, 66 cm and 40 cm, using trial lenses of -1.5 and -2.5 D and SLOAN charts under photopic lighting conditions.
Results: CDVA was on average 0.00 monocularly with both IOLs and binocularly. DCIVA and DCNVA were 0.15 and 0.40 for ArtIOLs® 40, 0.11 and 0.38 for ArtIOLs® 70 and 0.03 and 0.26 binocularly. The UDVA, UIVA and UNVA were 0.04 and 0.12, 0.09 and 0.24, 0.03 and 0.12 for ArtIOLs® 40 and ArtIOLs® 70 respectively. The binocular UDVA for far and intermediate were on average 0.01 and 0.06 at near.
Conclusions: In patients with previous myopic-LASIK, the binocular implantation of the two of ArtIOLs® models (ArtIOLs® 40 and ArtIOLs® 70) also extends the depth of focus up to at least 40 cm. This combination resulted in ranges of visual acuities comparable to results published in patients implanted with diffractive trifocal IOLs without the drawbacks of disphotopsias. ArtIOLs® are a good option to post-LASIK patients which require good vision at all distances.