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Truedge Aspheric
Truedge Aspheric IOLs are manufactured from PMMA material. It has 360° sharp edge on the posterior side of the lens and aspheric optic on anterior surface. As Advance research shows that the IOL design can play a vital role in prevention of PCO, Truedge lens are designed with 360° sharp edge on the posterior side of the lens and aspheric optic with zero aberration on the anterior side of the IOL. This sharp edge of the IOL prevents the epithelial cells migrating to the posterior side, thereby reducing the PCO (Posterior capsule opacification) rate.
Product features:
- Truedge 360° Square Edge acts as a mechanical barrier for cell proliferation.
- Exerts 60% optimum pressure on the posterior capsule compared to round edge.
- Excellent capsular contact allows no space for the cells to migrate.
- Cell proliferation occurs maximum at the Optic-Haptic junction, Truedge has 360° square edge including the Haptic – Optic junction which is very difficult to achieve.
- Truedge has a steep vault of 0.4 mm
- Pushes the lens towards the posterior capsule
- Capsular bag forms a cover on the posterior side of the lens.
- Rounded anterior Edge for Reduced Glare.
- Rounded anterior edge reduces the intensity of internally reflected lights.
- Study shows that glare and glistening can be greatly reduced with rounded anterior edge
- Aberration Free Optic –Truedge aspheric does not introduce any SA to the implanted eye. It improves the contrast sensitivity in dim and low light conditions. Visual acuity remains undisturbed even during tilt and decentration of optic.
Conventional Lens Design
Truedge Lens Design
Simulated image with spherical IOL
(Non Aspheric)
Simulated image with Truedge Aspheric IOL
| Product Specifications (Truedge Aspheric IOL) | ||
| Model Number | S362SQAS | |
| Optic Size | 6.00 mm | |
| Optic Design | Aspheric, Zero aberration lens | |
| Haptic Design | Modified ‘C’ Loop | |
| Edge | 360° Posterior square edge | |
| Vault Height | 0.4mm | |
| Angulation | 10° Angulation | |
| A Constant | 118.0 | |
| ACD | 5 mm | |
| Diopter Range | 10.0D to 30.0D 15.0D to 25.0D in 0.5D |
|
| Product Specifications | ||
| Model Number | S3550SQ | |
| Optic Diameter | 5.5 mm | |
| Optic Design | Equiconvex | |
| Haptic Design | Modified ‘C’ Loop | |
| Edge | 360° Posterior square edge | |
| Vault Height | 0.4mm | |
| Angulation | 10° Angulation | |
| A Constant | 118.5 | |
| ACD | 5 mm | |
| Diopter Range | 10.0D to 30.0D 15.0D to 25.0D in 0.5D |
|
| Material Characteristics | ||
| Lens Material | UV absorbing PMMA with the proven clinical performance | |
| Refractive Index | 1.49 | |
Clinical study:
Publication:
| Long term PCO reduction with Square-Edge PMMA IOL - Randomized Controlled Study | Download |
Authors:
Aravind Haripriya, MD,David F. Change,MD, Balakrishnan Vijayakumar, MSc,Agrawal Niraj, MD, Madhu Shekar,MD, Singh Tanpreet,MD, Srinivasan Aravind,MD
Ref: 2016 The American Academy of Ophthalmology
Published by - Elsevier Inc. ISSN 0161-6420/16