Multifocal Intraocular Lenses
BIFOCAL / TRIFOCAL / EDOF
BIFOCAL IOL
Riyan MULFICOCAL / Riyan MULTYFOCA
We believe in the Riyan to choose multifocal iols in either hydrophilic or hydrophobic material manufactured with two different technology to meet the needs of every patient. Riyan Meditech proposes 2 different models of multifocal Iols in Hydrophilic and Hydrophobic material with two different technology to meet the needs of every patient.
Why every multifocal IOL is not equal?
The principle of multifocal IOLs is to split light energy to achieve sharpness for distance and near vision. The number of rings, their height, and the interval between the diffractive zones play an important role in the light distribution (RNI). Depending on the amount of energy chosen between two foci, the patient can have a high contrast or low contrast image.
Riyan Multifocal’s advanced design with diffractive zones on the anterior surface and posterior aspheric surface with 360° square edge provides excellent visual performance under all light conditions.
Specification
- Hydrophobic Material with refractive index 1.493 and 360° square edge.
- Diffractive-Refractive design for better energy distribution.
- The central zone of 3.25mm diameter has 9 diffractive zones and the remaining 2.75mm portion of lens is made of refractive zone.
- +3.00 D additional power
Diopter Range from +5,00 D to +30,0 D step.
Riyan MULTIFOCAL
Hydrophobic Acrylic Posterior Chamber Multifocal Aspheric 360° Square Edge Single Piece Foldable Intraocular Lens
Riyan MULTYFOCAL
Yellow Hydrophobic Acrylic Posterior Chamber Multifocal Aspheric 360° Square Edge Single Piece Foldable Intraocular Lens
| Model | RAC602SQ | RAPC602SQP |
|---|---|---|
| Optic Design | Equiconvex - 360° Square Edge with Aspheric & Diffractive - Refractive Optic | |
| Optic Size | 6.00mm | |
| Over All length | 13.00mm | |
| Estimated A-Constant | 118.40 | |
| Recommended Optical A-Constant | A Constant SRK/T : 119.20 | A Constant SRK/II : 119.50 | |
| Hoffer Q : 5.65 | Holladay 1 : 1.87 | Holladay 2 : 5.199 | Haigis : a0=1.441/a1=0.400/a2=0.100 | ||
| Diopter Range | 5.00 D to 30.00 D (0.5 Diopter increments) | |
| Near Addition | + 3.50D (Special order: +2.50D - 4.00D) | |
| AC Depth | 5.00mm | |
| Refractive Index | 1.493 | |
| Cartridge Size | RDC220_60DEG | PRELOADED |
| Model | RAC602SQY | RAC602SQYP |
|---|---|---|
| Optic Design | Equiconvex - 360° Square Edge with Aspheric & Diffractive - Refractive Optic | |
| Optic Size | 6.00mm | |
| Over All length | 13.00mm | |
| Estimated A-Constant | 118.40 | |
| Recommended Optical A-Constant | A Constant SRK/T : 119.20 | A Constant SRK/II : 119.50 | |
| Hoffer Q : 5.65 | Holladay 1 : 1.87 | Holladay 2 : 5.199 | Haigis : a0=1.441/a1=0.400/a2=0.100 | ||
| Diopter Range | 5.00 D to 30.00 D (0.5 Diopter increments) | |
| Near Addition | + 3.50D (Special order: +2.50D - 4.00D) | |
| AC Depth | 5.00mm | |
| Refractive Index | 1.493 | |
| Cartridge Size | RDC220_60DEG | PRELOADED |
TRIFOCAL IOL
Riyan TRIFOCAL Intraocular Lens
Freedom TRIFLEX / Freedom TRYFLEX
Why choose Riyan TRIFLEX IOL?
The Advanced Trifocal Hydrophobic Intraocular Lens of Riyan is designed to provide intraocular lens, providing CLEAR VISION for NEAR, INTERMEDIATE and FAR distance. Now our patients can enjoy an independent active lifestyle, free of spectacles or other visual aids.
Riyan TRIFLEX IOL is designed to give patients the ability to see clear at all distances:
Unique manufacturing process
Enhanced Optical design of Riyan hydrophobic material with low refractive index over hydrophilic material ; with round edge zones provides better results against photopic conditions by reducing internal reflection and glares. 360° square edge with thicker haptic design provides dual barrier technology against lower risk of PCO formation with excellent rotational stability. The aspheric design technology combined with a ABBE number of 50 allows for a negative spherical aberration of 0.15µm to offset the positive sphericity of human cornea for improved contrast sensitivity.
Unique manufacturing process
- The central zone is of 4.50 mm diameter, has 16 diffractive zones. The remaining 1.50mm portion of the lens has the refractive zone.
- Addition +1.85D (Intermediate) & 3.5D (Near)
- Diopter Range from +5.00 D to +30.0 D with 0.50 D step
- UV Filter (Energy cut below 500nm)
- Maximum Light Transmission under any Light Conditions
- Increased Bio-mechanical Stability
- Excellent Far, Intermediate & Near Vision RNI-Distribution for Far, Intermediate & Near 40/25/35
- Free of Glistening & Whitenin
Riyan TRIFLEX
Hydrophobic Acrylic Posterior Chamber Trifocal Aspheric 360° Square Edge Single Piece Foldable Intraocular LensRiyan TRYFLEX
Yellow Hydrophobic Acrylic Posterior Chamber Trifocal Aspheric 360° Square Edge Single Piece Foldable Intraocular Lens
| Model | RARPC602SQ | RARPC602SQP |
|---|---|---|
| Optic Design | Equiconvex - 360° Square Edge with Aspheric & Diffractive - Refractive Optic | |
| Optic Size | 6.00mm | |
| Over All length | 13.00mm | |
| Estimated A-Constant | 118.40 | |
| Recommended Optical A-Constant | A Constant SRK/T : 119.20 | A Constant SRK/II : 119.50 | |
| Hoffer Q : 5.65 | Holladay 1 : 1.87 | Holladay 2 : 5.199 | Haigis : a0=1.441/a1=0.400/a2=0.100 | ||
| Diopter Range | 5.00 D to 30.00 D (0.5 Diopter increments) | |
| Intermediate / Near Addition | +1.85 / + 3.50D | |
| AC Depth | 5.00mm | |
| Refractive Index | 1.493 | |
| Cartridge Size | RDC220_60DEG | PRELOADED |
| Model | RARPC602SQY | RARPC602SQYP |
|---|---|---|
| Optic Design | Equiconvex - 360° Square Edge with Aspheric & Diffractive - Refractive Optic | |
| Optic Size | 6.00mm | |
| Over All length | 13.00mm | |
| Estimated A-Constant | 118.40 | |
| Recommended Optical A-Constant | A Constant SRK/T : 119.20 | A Constant SRK/II : 119.50 | |
| Hoffer Q : 5.65 | Holladay 1 : 1.87 | Holladay 2 : 5.199 | Haigis : a0=1.441/a1=0.400/a2=0.100 | ||
| Diopter Range | 5.00 D to 30.00 D (0.5 Diopter increments) | |
| Intermediate / Near Addition | +1.85 / + 3.50D | |
| AC Depth | 5.00mm | |
| Refractive Index | 1.493 | |
| Cartridge Size | RDC220_60DEG | PRELOADED |
EDOF IOL
EDOF Hydrophobic IOL
Riyan EDOF / Riyan YEDOF
The new EXTENDED DEPTH OF FOCUS IOL also called EDOF is a new premium lens manufactured by Riyan for Far & Intermediate Vision. Our advanced design is a PURE REFRACTIVE OPTICS technology, with no diffractive part. The entire light is refracted into the eyes, so you don’t lose any Energy!
This ONE PIECE with C-LOOP Design is a 360° Square Edge Intraocular lens made with hydrophobic material. It is certified “free of glistening” with high sensitivity contrast for better visual acuity.
How does it work?
The center part, a 2 mm zone, is a pure refractive optic that combine different spherical aberrations of opposite sign to optimize and increase the depth of focus.
The transition zone is designed to decrease the optic vergence from the center to the periphery and to control the trajectory of the light rays. It is a very important zone as it reduces drastically the light loss. The Far Vision zone is a monofocal aspheric surface, similar to our monofocal IOL.
Lens Performance
The AREA MTF (Modular Transfer Function) is an information that reflects the optical quality of an intraocular lens: The larger it is, the better it is for IOL quality. For a 3mm Pupil size, our IOL provides a depth of field of approximately 2.00D with a smooth transition for far and intermediate vision. As our monofocal IOL, our IOL is not sensitive to any decentralization or any tilting, and will provide the same quality of optics whatever the pupil size. From our advance design, we reduce the risk of dysphotopsias compared to trifocal IOL, or any diffractive IOLs. It is a great opportunity to achieve FAR & INTERMEDIATE vision, with a very low risk of light loss.
Specification
Hydrophobic Material with refractive index 1.493 and 360° square edge
Fully Refractive design for better energy distribution and no light loss
+2.00 D additional power fo FAR & INTERMEDIATE Vision
Diopter Range from +5,00 D to +30,0 D step
Freedom EDOF
EDOF Hydrophobic Acrylic Posterior Chamber Aspheric 360° Square Edge Single Piece Foldable Intraocular Lens
Freedom YEDOF
Yellow EDOF Hydrophobic Acrylic Posterior Chamber Aspheric 360° Square Edge Single Piece Foldable Intraocular Lens
| Model | RADOF602SQ | RADOF602SQP |
|---|---|---|
| Optic Design | Biconvex - 360° Square Edge with Refractive Optic | |
| Optic Size | 6.00mm | |
| Over All length | 13.00mm | |
| Estimated A-Constant | 118.40 | |
| Recommended Optical A-Constant | A Constant SRK/T : 119.20 | A Constant SRK/II : 119.50 | |
| Hoffer Q : 5.65 | Holladay 1 : 1.87 | Holladay 2 : 5.199 | Haigis : a0=1.441/a1=0.400/a2=0.100 | ||
| Diopter Range | 5.00 D to 30.00 D (0.5 Diopter increments) | |
| Intermediate / Near Addition | + 2.00D | |
| AC Depth | 5.00mm | |
| Refractive Index | 1.493 | |
| Cartridge Size | RDC220_60DEG | PRELOADED |
| Model | RADOF602SQY | RADOF602SQYP |
|---|---|---|
| Optic Design | Biconvex - 360° Square Edge with Refractive Optic | |
| Optic Size | 6.00mm | |
| Over All length | 13.00mm | |
| Estimated A-Constant | 118.40 | |
| Recommended Optical A-Constant | A Constant SRK/T : 119.20 | A Constant SRK/II : 119.50 | |
| Hoffer Q : 5.65 | Holladay 1 : 1.87 | Holladay 2 : 5.199 | Haigis : a0=1.441/a1=0.400/a2=0.100 | ||
| Diopter Range | 5.00 D to 30.00 D (0.5 Diopter increments) | |
| Intermediate / Near Addition | + 2.00D | |
| AC Depth | 5.00mm | |
| Refractive Index | 1.493 | |
| Cartridge Size | RDC220_60DEG | PRELOADED |