Analysis Of The Quality And Visual Stability Of The Diffractive Trifocal Intra-Ocular Lens Rayone Trifocal® Rayner.

Visual analysis after implantation of the RayOne Trifocal® (RAO603F) Rayner intraocular lens (IOL). Based on visual acuity and contrast sensitivity data under photopic and scotopic conditions

The study population is comprised of 50 eyes, 25 patients, intervened with RayOne Trifocal® (RAO603F) Rayner lenses, in a period of 24 months.

In this study, 25 patients who underwent surgery on both eyes with RayOne Trifocal® Rayner IOLs are examined. All of them have visual acuity and contrast sensitivity measured 12 months after surgery under photopic and scotopic conditions.

 

Visual acuity and defocus curve are measured with the EDTRS optotype at 4 meters and photopic illumination of 85cd/m² and scotopic illumination of 10cd/m². Contrast sensitivity is measured using the CSV-1000HGT chart. At a distance of 2.5 meters (8 feet) with spatial frequencies of 3, 6, 12 and 18 cycles/degree.

RayOne Trifocal® Rayner, at 12 months: PHOTOPIC / SCOTOPIC

 

.-  Binocular defocus curve (HOTSPOTS):  

-       Optical infinity or distant vision: 

0.05logMAR / 0.05logMAR

-       Intermediate vision 67 cm. (-1.5D): 

0.05logMAR / 0.05logMAR

-       Near vision 33 cm. (-3.0D): 

0.05logMAR / 0.05logMAR

 

 

.-  Contrast sensitivity test:

-       3 cycles/degree: 5.93 / 5.32

-       6 cycles/degree: 4.60 / 4.16

-       12 cycles/degree: 3.81 / 2.94

-       18 cycles/degree: 3.12 / 2.24

OPTICAL:

 -       Diffractive trifocal technology with order 0 in intermediate vision.

-       IOL with aspherical optics and neutral spherical aberration.

 

CLINICAL:

 

-       Very stable visual acuity at all distances regardless of pupil diameter and lighting conditions.