Visual And Refractive Outcomes In Patients With A History Of Previous Laser Vision Correction Undergoing Implantation Of A Refractive Partial Range Of Field Extended Intraocular Lens

To outline the postoperative objective visual and refractive outcomes and subjective quality of vision (QoV) following implantation of a new refractive partial range of field extended intraocular lens (IOL) in eyes with a history of previous refractive laser surgery.

Cathedral Eye Clinic, Belfast, Northern Ireland, UK

The study enrolled 5 patients implanted bilaterally with the Puresee IOL (Tecnis) with a history of previous refractive laser surgery. The refractive aim in the first eye (dominant eye) was the first myopic target, and a micro-monovision offset up to -0.75 D for second nondominant eye. Refractive error, binocular uncorrected distance (UDVA), intermediate (UIVA) and near (UNVA) visual acuities, spherical aberration, defocus curves and quality of vision questionnaires (QoV) were the primary outcome measurements evaluated 3 months post IOL implantation. 

The mean binocular UDVA was -0.10 ± 0.08 logMAR 3 month postoperatively. The mean binocular UIVA and UNVA was 0.10 logMAR and 0.18 ± 0.13 logMAR respectively. The mean postoperative spherical equivalent refractive error was -0.22 ± 0.51 D. QoV was reported to be high with a mean QoV score of 8.6 ± 0.89 (range, 8 to 10) for day and a night QoV score of 7.6 ± 1.52 (range, 6 to 10). Minimal dysphotopsias were reported, and 60% reported complete spectacle independence with the remaining patients reporting only occasional use of reading glasses. All patients reported they would recommend the procedure.

This new refractive partial range of field extended IOL provides a satisfactory range of vision with minimal visual side effects and high patient satisfaction in eyes with previous refractive surgery. Outcomes of a larger sample size and more detailed analysis will be presented at the conference, including categorisation into groups based on whether patients had previous hyperopic or myopic laser refractive surgery. Approximately a further 30 patients with a history of previous bilateral LVC will be added when 3-month data is available and reported at the conference.