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RESEARCH PRODUCT

Visual function after implantation of a diffractive aspheric trifocal intraocular lens

Luis Fernández-vega CuetoLuis Fernández-vegaRobert Montés-micóLurdes Belda-salmerónJosé F. Alfonso

subject

AdultMaleVisual acuitygenetic structuresPseudophakiamedicine.medical_treatmentVisual AcuityIntraocular lensProsthesis DesignRefraction OcularGlareContrast Sensitivity03 medical and health sciencesNear visionOcular physiology0302 clinical medicineLens Implantation IntraocularMedicineHumansProspective StudiesAgedLenses IntraocularVision BinocularPhacoemulsificationColor Visionbusiness.industryGeneral MedicinePhacoemulsificationMiddle Agedeye diseasesOphthalmologyVisual function030221 ophthalmology & optometryOptometryFemalemedicine.symptombusinessBinocular vision030217 neurology & neurosurgeryPseudophakia

description

Purpose To evaluate distance, intermediate, and near vision after bilateral implantation of a diffractive aspheric trifocal intraocular lens (IOL). Methods This study enrolled 204 eyes of 102 patients who had bilateral implantation of the AT LISA tri 839MP IOL. Monocular and binocular uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CDVA) (4 meters), monocular and binocular uncorrected near visual acuity (UNVA) and distance-corrected near visual acuity (DCNVA) (30, 40 centimeters), binocular uncorrected intermediate visual acuity (UIVA) and distance-corrected intermediate visual acuity (DCIVA) (50, 60, 70 centimeters), the defocus curve, and binocular photopic and mesopic contrast sensitivity with and without glare were evaluated over 6 months. Results No statistically significant differences in visual acuity outcomes between follow-up visits were found at any distance evaluated (p>0.05). Six months postoperatively, the mean monocular UDVA and UNVA were comparable to preoperative CDVA and DCNVA, respectively. All patients achieved a binocular CDVA of 20/25 or better. The mean binocular DCIVA ranged from 0.11 ± 0.11 (70 cm) to 0.07 ± 0.11 logMAR (50 cm). The mean binocular DCNVA was 20/25 or better in nearly 87% of patients. The defocus curve showed a wide range of useful vision, with no statistically significant differences in visual acuity at intermediate distances (p = 0.151). Mesopic contrast sensitivity was lower than under photopic conditions, particularly at medium and high spatial frequencies (p<0.001). Conclusions Bilateral implantation of this trifocal IOL provides good visual outcomes at far, intermediate, and near distances, being an effective solution to reduce spectacle dependence after lensectomy.

10.5301/ejo.5000741http://hdl.handle.net/10651/40389