Aspheric Near Vision Solution Outcomes With Light-Adjustable IOL
Narrative Responses:
Purpose
To evaluate, for the visual correction of aphakia, the safety and effectiveness of a light adjustable intraocular lens to provide subjects with near, intermediate and distance vision using controlled amounts of induced negative asphericity.
Methods
Twenty subjects (40 eyes) undergoing bilateral cataract surgery implanted with the Light Adjustable Lens (LAL; Calhoun Vision) are followed up to 3 months post-op. The study includes patients with corneal astigmatism ≤2.25D and visual acuity potential ≥20/25. The dominant eye is targeted for zero asphericity, while the non-dominant eye is targeted for customized, controlled levels of negative asphericity in order to optimize intermediate (60 cm) and distance vision or near (40 cm) and distance vision. Study outcomes include monocular and binocular uncorrected visual acuity (VA) at near, intermediate, and distance, and corrected VA for near and distance.
Results
All one week post final lock-in follow-ups are complete, with 3 month follow-ups more than have way complete. At one week post final lock-in for 40 eyes (20 subjects), 90% of subjects achieved binocular UCNVA of 20/32 or better, while 95% of these subjects achieved 20/25 or better for UCDVA. 100% of subjects achieved 20/32 or better for UCIVA.
Conclusion
Preliminary results suggest that the LAL can be used to safely and effectively improve near, intermediate, and distance visual acuity in cataract patients by using controlled amounts of negative induced ashpericity.