The optic features 16 diffractive rings/steps within a 4.5 mm diffractive zone, with the outer optic functioning as a monofocal distance zone beyond 4.5 mm. This design helps reduce visual disturbances, improves distance vision under mesopic conditions, and is developed to be less dependent on pupil size or lighting conditions.
The RayOne Trifocal range includes:
RayOne Trifocal Preloaded IOL — For capsular bag implantation
RayOne Trifocal Toric Preloaded IOL — For capsular bag implantation with correction of preoperative corneal astigmatism
Sulcoflex Trifocal Supplementary IOL — For ciliary sulcus placement with optional correction of refractive changes or residual refractive error
Rayner’s patented diffractive step trifocal technology reduces light loss to only 11%, transmitting 89% of light to the retina with a 3.0 mm pupil. Approximately half of the transmitted light is allocated for distance vision, while the remainder is distributed between intermediate and near vision.
Light energy split with a 3.0 mm pupil:

