Visual Outcomes After Implantation Of A New Intraocular Lens Design For Presbyopia Correction.

To study the visual function with different luminance conditions (photopic 85cd/m2 and mesopic 5 cd/m2) in patients implanted with the new Intensity diffractive lens.

Hospital Clinico San Carlos Madrid

24 patients diagnosed with bilateral cataract were included. Visual acuity (LogMAR) at distance without and with best compensation was determined, as well as intermediate (65 cm) and near (40 cm) visual acuities, both with best compensation at distance. Contrast sensitivity was studied binocularly with the CSV1000 test (Vector Vision). The defocus curve was quantified under photopic and mesopic conditions binocularly with the best compensation in a range between +1.50D and -4.00D in 0.50D steps. Induced dysphotopsia was studied and graded using the Likert scale. 

Statistically significant but not clinically relevant differences were found between the results of far vision with respect to near and intermediate vision and also between near and intermediate vision.In the defocus curve, no significant differences were found in photopic conditions.All the points analyzed show significant differences between photopic and mesopic conditions.Contrast sensitivity measured with CSV1000 was satisfactory for this lens with levels of 1.55 ± 0.29 at frequencies of 3 cycles per degree (cpg) and 1.60 ± 0.17 at frequencies of 6 cpg.Most of the dysphotopsia was Halo.

The visual function and quality in patients implanted with the Intensity intraocular lens is satisfactory, providing a defocus curve without large drops at different distances and without being associated with significant dysphotopic phenomena.