1 / 12

EXTENDED DEPTH OF FOCUS WITH INDUCED SPHERICAL ABERRATION IN LIGHT ADJUSTABLE IOLs

EXTENDED DEPTH OF FOCUS WITH INDUCED SPHERICAL ABERRATION IN LIGHT ADJUSTABLE IOLs. L ABORATORIO DE O PTICA, U NIVERSIDAD DE M URCIA , SPAIN * Hospital Virgen de la Arrixaca, Murcia, SPAIN. Pablo Artal , Eloy Villegas, Encarna Alcón, Inés Yago*, Elena Rubio*, José M. Marín*.

gafna
Download Presentation

EXTENDED DEPTH OF FOCUS WITH INDUCED SPHERICAL ABERRATION IN LIGHT ADJUSTABLE IOLs

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. EXTENDED DEPTH OF FOCUS WITH INDUCED SPHERICAL ABERRATION IN LIGHT ADJUSTABLE IOLs LABORATORIODEOPTICA, UNIVERSIDAD DEMURCIA, SPAIN * Hospital Virgen de la Arrixaca, Murcia, SPAIN Pablo Artal, Eloy Villegas, Encarna Alcón, Inés Yago*, Elena Rubio*, José M. Marín* Supported by: Reserch funding and consulting reimbuserment provided by Calhoun Vision, USA

  2. Light-adjustable intraocular lenses (LALs)* allow nearly PERFECT refractive outcomes, but also… customized near vision by extended depth of focus with induced spherical aberration. *

  3. Spherical aberration increases depth of focus

  4. LAL secondary treatmentsto induce spherical aberration (asphericity) increasing depth of focus (See example of LAL full treatment in next slide)

  5. Secondary adjustment Inducing spherical aberration Primary adjustment correcting defocus & astigmatism lock-ins Two weeks Surgery eye’s wave-fronts (examples)

  6. Patients were implanted bilaterally with LALs One eye was set to near emmetropia and in the fellow eye negative spherical aberration was induced

  7. Visual acuity was measured using a computer-assisted procedure both monocularly (each eye separately) and binocularly Refraction and spherical aberration measured in each patient with a Hartmann-Shack wavefront sensor

  8. and with letters on a micro-display placed at: 60 cm 30 cm 40 cm

  9. Example of induction of negative spherical aberration in LALs Pre-adjusment Post-lockin 2 Myopic M1SA3_60 Aspheric F4.7_b0.5 Z12=+0.12mm Z12 =-0.20mm > |-0.3| mm

  10. Visual acuity as a function of object distance Monocular (“far” eye) Monocular (“near” aspheric eye) Binocular vision 20/20 20/25 J1 J2 20/30 20/40 J3 Z12[-0.14,-0.24mm] (sample 4)

  11. Visual acuity as a function of object distance Binocular vision 20/20 20/25 J1 J2 20/30 20/40 J3 Z12[-0.14,-0.24mm] (sample 4)

  12. Conclusions • The use of the LALs as an advanced and fully customized approach to produce extended depth of focus modifying the eye’s asphericity has been demonstrated. • In a group of 4 patients, the average binocular visual acuity was 1.1 for far and J1 or better for intermediate and near distances. • The particular amounts of spherical aberration and defocus can be personalized to maximize quality of vision at all distances.

More Related