EARLY RESULTS FOLLOWING THE MONOCULAR IMPLANTATION OF A CONTINUOUS FULL RANGE OF FOCUS INTRAOCULAR LENS (INTENSITY SL) IN EMMETROPIC, YOUNG PRESBYOPIC PATIENTS

To evaluate the visual and refractive outcomes of monocular implantation of the Intensity SL intraocular lens (IOL)—a diffractive pentafocal IOL—in the non-dominant eye of emmetropic, presbyopic patients seeking improvement in near vision. This study represents the first global report describing this specific surgical approach using this particular lens.

Private high-volume refractive surgery clinic en Medellín, Colombia

This retrospective, descriptive study included 13 patients aged over 40 years with presbyopia and emmetropic distance refraction (spherical equivalent between –0.50 D and +0.50 D in both eyes). All subjects underwent phacoemulsification with implantation of the Intensity SL intraocular lens (IOL) (Hanita Lenses; Hanita, Israel) in the non-dominant eye. Biometric measurements were obtained using the Pentacam AXL Wave, and IOL power was calculated using multiple advanced formulae. Postoperative outcomes were evaluated at six months and included uncorrected and best-corrected visual acuity at distance, intermediate, and near ranges, defocus curve analysis, and patient-reported spectacle independence.

All surgeries were completed uneventfully. At six months postoperatively, all patients demonstrated a significant improvement in uncorrected near and intermediate visual acuity in the operated eye, with no statistically significant change in uncorrected distance visual acuity. The mean uncorrected near visual acuity in implanted eyes was 0.03 ± 0.06 LogMAR. Binocular defocus curves revealed a marked extension of the functional range of vision. No patient experienced a loss of two or more lines of best-corrected visual acuity. All patients (100%) reported complete spectacle independence for daily activities, with no instances of disabling dysphotopsia or depth perception disturbances. No intraocular lens exchanges or additional procedures were required.

Monocular implantation of the Intensity SL diffractive pentafocal intraocular lens (IOL) in emmetropic, presbyopic patients appears to be a safe and effective approach for restoring near and intermediate vision while maintaining distance vision. This strategy may reduce the risk of dysphotopsia commonly associated with bilateral implantation and achieved excellent levels of patient satisfaction and spectacle independence. The findings of this pilot study support further evaluation of this technique in larger, prospective clinical cohorts.