Clinical Outcomes After Bilateral Implantation With Rayone Emv Intraocular Lenses

To investigate clinical outcomes obtained from subjects implanted bilaterally with Rayner RayOne EMV Intraocular lenses (IOL).

We monitor visual acuity and defocus curve with the EDTRS optotype at 4 meters and illumination of 85cd/m².

Contrast sensitivity using CSV-1000HGT table.  At 2.5 meters (8 feet) with spatial frequencies of 3, 6, 12 and 18 cycles/degree.

This retrospective data collection includes a total of 50 patients who have been bilaterally implanted with the Rayner RayOne EMV IOL. Data were available preoperatively and 6 months postoperatively and included manifest refraction, binocular contrast sensitivity and defocus curve, monocular and binocular uncorrected (UDVA) and monocular corrected distance visual acuity (CDVA), monocular and binocular uncorrected intermediate visual acuity (UIVA) and monocular corrected visual acuity (CIVA) as well as monocular and binocular uncorrected near visual acuity (UNVA) and monocular corrected near visual acuity (CNVA). Dysphotopsia were assessed in terms of halo type, intensity and size as well as glare intensity and size on a scale from 0 to 100.

The 23 female and 27 male patients were 69.3±10.4 years of age. At 6-month postoperative MRSE outcomes were -0.23±0.21 D. Mean monocular and binocular UDVA were 0.05±0.09 and 0.03±0.07 logMAR, respectively. Monocular CDVA was 0.04±0.09 logMAR. Monocular and binocular UIVA were 0.22±0.14 and 0.18±0.08 logMAR, respectively. Monocular CIVA was 0.05±0.09 logMAR. Monocular and binocular UNVA were 0.41±0.17 and 0.34±0.12 logMAR, respectively. The corresponding monocular CNVA outcome was 0.04±0.09 logMAR. The defocus curve was better than 0.2 logMAR from -1.7D to 0.6D. Halo and glare size and intensity results ranged from 10 to 38 in size and from 11 to 41 in intensity. Subjectively neither halo nor glare were reported by any patient.

Clinical outcomes obtained in 50 patients bilaterally implanted with the RayOne EMV IOL show good visual acuity for distance and intermediate vision and useful vision for near distances. The defocus curve shows an enhanced range of useful visual acuity ranging from approx. 59 cm to infinity. The refractive optical design leads to a very low occurrence of photic phenomena with no patient actively reporting about halo or glare. We believe that this IOL offers great vision in combination with high visual quality.