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Reducing Aberrations in Patients with Light Adjustable Intraocular Lenses Post-Cataract Surgery

This study investigates the impact of light adjustable intraocular lenses (LALs) on refractive errors and visual quality following cataract surgery. Through a wavefront analysis of 64 patients, we measured the adjustments made to control aberrations over a treatment period. Results show that LALs induce minimal high-order aberrations while maintaining visual acuity. The study demonstrates the efficacy of LALs in stabilizing aberrations for up to one year post-surgery, indicating their potential for optimal refractive outcomes.

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Reducing Aberrations in Patients with Light Adjustable Intraocular Lenses Post-Cataract Surgery

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  1. ABERRATIONS IN PATIENTS IMPLANTED WITH LIGHT ADJUSTABLE INTRAOCULAR LENSES LABORATORIODEOPTICA, UNIVERSIDAD DEMURCIA, SPAIN * Hospital Virgen de la Arrixaca, Murcia, SPAIN Pablo Artal, Encarna Alcón, Eloy Villegas, Carmen Cánovas, Elena Rubio*, José M. Marín* Supported by: Reserch funding and consulting reimbuserment provided by Calhoun Vision, USA

  2. Refractive errors (defocus & astigmatism) produce the most deleterious impact in vision after cataract surgery Best focus (0 D, 0 D) Refractive error (1 D, 1 D)

  3. Light adjustable intraocular lenses (LALs)* allow nearly PERFECT refractive outcomes and improved quality of vision after cataract surgery hn hn Spatially resolved irradiation "lock-in" *

  4. LALs procedure: + Surgery Two weeks adjustment + lock-ins Corneal stabilization

  5. 64 patients implanted with LALs have been carefully measured with an objective WAVEFRONT approach for refraction and aberration control through the whole treatment process

  6. Example of eye’s (all) aberrations treatment lock-ins Pre adjustment Post_lock-in1 Post_lock-in 2 Post_1ºadjustment stability Post_3months Induced wavefront by treatment

  7. Effect of light profiles in LAL’s aberrations Hyperopic Myopic Astigmatic light treatments…

  8. LAL = eye - cornea (Artal and Guirao, Opt.Lett., 1998; Artal et al., JOV,2001) - = ? - =

  9. INDUCED ABERRATIONS BY LIGHT TREATMENT D RMS (mm) 4mm pupil

  10. Impact of induced aberrations by treatment in visual acuity Best corrected VA

  11. Stability of the adjustable IOLs after lock-in: changes in LAL’s wavefront? RMS microns after treatment afterone month

  12. Conclusions • i) The light adjustment profiles induced small amounts of high order aberrations, except for the myopic astigmatism and myopic treatments • ii) These induced aberrations did not compromise visual acuity • iii) The aberrations in the LALs remained nearly constant up to 1 year post-surgery • iv) These results indicate the potential ability of LALs to effectively control the eye´s aberrations

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