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Improving refraction with the light adjustable lens: two year experience

Session Details

Session Title: IOL Technology

Session Date/Time: Sunday 06/10/2013 | 16:30-18:30

Paper Time: 16:54

Venue: Auditorium (First Floor)

First Author: : T.Neuhann GERMANY

Co Author(s): :                  

Abstract Details


To evaluate the reliability, stability, efficacy, and safety of the light. adjustable lens in improving visual and refractive outcomes.


AaM Augenklinik am Marienplatz Munich, Germany


The light-adjustable lens (LAL; Calhoun Vision, Pasadena, CA) was implanted in the eyes of patients undergoing routine cataract surgery. Three to 4 UV treatments were performed followed by a final lock-in. Uncorrected distance and near visual acuity (UDVA and UNVA) and refraction were measured at follow-up.


This study included 65 eyes (mean age 63 years, range 48-83 years). Thirteen eyes had previous LASIK, 2 eyes had keratoconus, and 9 eyes lacked a reliable IOL Master axis measurement. Mean pre-operative spherical equivalent (SE) was -1.75D ± 4.52D. Post-operative SE at 1-month follow-up was -0.37D ± 0.79D. SE remained stable over time. Mean SE at 3, 6, 12, 18, and 24 months was -0.29D, -0.82D, -0.43D, -0.25D, and -0.56D, respectively. At the 2-year follow-up, 94% of patients had achieved within ±0.5D of the intended refraction. UDVA and UNVA also improved. At the 2-year follow-up 100% of patients had a UDVA of 20/32 or better and 55% had a UVDA of 20/20 or better. One hundred percent of patients achieved a UNVA of J8, 64% achieved UNVA of J6, and 32% and 16% of patients achieved UNVA of J4 and J3, respectively. Patients showed higher order aberrations (coma) post-LAL implantation.


The LAL is a sophisticated and reliable method to correct small corneal astigmatism within the range of 0.5D-2.5D. It is equally effective in uncomplicated eyes and in eyes with prior LASIK, keratoconus, or unrealiable axis measurement. The LAL improves near vision even when only distance vision correction is targeted. This is most likely due to the formation of coma in LAL implanted eyes.

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