T-flex® Aspheric Toric

T-flex® Aspheric Toric

Proven rotational stability2 and excellent centration for predictable, sustainable and accurate visual results, make Rayner’s T-flex® Aspheric Toric IOL the ideal choice for treating cataract patients with pre-existing corneal astigmatism.

Anti-Vaulting Haptic (AVH) Technology®  — a feature of Rayner primary IOL platform  — offers excellent fixation within the capsular bag, and an extensive range of sphere and cylinder power combinations allow more patients to be accurately corrected, even those with high levels of corneal astigmatism.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         


  1. Alberdi R et al. J Refract Surg 2012; 28(10); 696-700.

How many of your cataract patients would benefit from a T-flex Aspheric Toric IOL?

Prevalence of pre-operative corneal astigmatism in a cross-sectional study of 746 patients (1230 eyes):13

  • Over 40% presented with >1.0 D of astigmatism
  • More than 20% presented with >1.5 D of astigmatism

Why leave your post-operative patients with residual astigmatism?

Vision with cataract and astigmatism
Vision with cataract and astigmatism
Post-operative vision with conventional IOL
Post-operative - conventional IOL
Post-operative vision with T-flex Aspheric IOL
Post-operative - T-flex Aspheric IOL

Proven rotational stability2 with predictable, sustainable and accurate visual results

Designed with AVH Technology® for excellent fixation within the capsular bag:1

  • Progressively taking up the forces generated within the contracting capsular bag 
  • Maintaining excellent centration with rotational, torsional and directional stability 

In a prospective study of 27 eyes in 22 consecutive patients with >1.5 D regular corneal astigmatism, at 3 months post-operatively, variations from intended axis were:2

mean variation
93% of IOLs
were ≤ 10°
were ≤ 12°
Percentage cylinder reduction of
(-2.70 ±0.94 to -0.52 ±0.63 D)

Stability achieved through advanced haptic design

Outer haptics begin to take up the compression forces of post-operative capsular contraction
Outer haptics engage the inner haptics
Haptic tips gently meet the IOL optic and are effectively locked into position


  1. Claoué C. Clinical and Surgical Ophthalmology 2008; 26(6): 198-200.
  2. Alberdi R et al. J Refract Surg 2012; 28(10); 696-700.
  3. Khan M and Muhtaseb M. JCRS 2011; doi: 10.1016/j.jcrs.2011.04.026.
T-flex IOLs are supplied with a Rayner injector
  • Uniquely designed loading bay with an extension "lip" to facilitate loading.
  • Soft plunger tip completely fills the nozzle and offers a soft protective interface with the IOL.
  • Syringe-style design for single-handed technique for smooth IOL delivery with predictable and efficient insertion, ensuring consistent IOL implantations.
  • Sterile Single-Use, ready to use.
Model Name: T-flex
Model Number: 573T / 623T
Power Range (Standard):

Sphere: +6.0 D to +30.0 D (0.5 D increments)

Cylinder: +1.0 D to +6.0 D (0.5 D increments)

Power Range (Made to Order):

Sphere: -10.0 D to +35.0 D (0.5 D increments) (subject to spherical equivalent)

Cylinder: +1.0 D to +11.0 D (0.5 D increments)

Optic Diameter: 5.75 mm (573T) / 6.25 mm (623T)
Haptic Diamter: 12.00 mm (573T) / 12.50 mm (623T)
Delivery System
Delivery System Type: Sterile Single use loadable injector
Nozzle Size: 2.00 mm
Bevel Angle: 45°
Lens Delivery: Single handed plunger
Aspheric Monofocal IOL
Material: Single piece Rayacryl® hydrophilic acrylic
Water Content: 26% in equilibrium
UV Protection: Benzophenone UV absorbing agent
UV light transmission: UV 10% cut-off is 380 nm
Refractive Index: 1.46
Optic Shape: Biconvex (positive powers), Biconcave (negative powers)
Asphericity: Anterior aspheric surface with aberration-neutral technology
Optic Edge Design: Amon-Apple 360° enhanced square edge
Haptic Angulation: 0°, uniplaner
Haptic style: Closed loop with anti-vaulting haptic (AVH) technology
Estimated constants for optical biometry SRK/T: 118.6
Estimated constants for Ultrasound A-constant: 118.0

*Please note that the constants indicated for all Rayner lenses are estimates and are for guidance purposes only. Surgeons must always expect to personalise their own constants based on initial patient outcomes, with further personalisation as the number of eyes increases.

Not all products or offerings are approved or offered in every market and approved labelling and instructions may vary from one country to another. For country specific product information contact your local distributor or email iol_enquires@rayner.com.

This product is not approved by the FDA for use or distribution in the United States of America.

Rayner hold a selection of EC certificates for various products. Please contact the Regulatory Affairs team for the current version.

Manually Loaded Primary IOL Platform

The importance of a high-performance platform.

For over sixty years Rayner has created IOLs with a simple guiding design principle; that our products do not just restore clear vision, but go further - to exceed the expectations of both cataract patient and surgeon.

Characterised by accurate, predictable, and sustainable refractive outcomes supported by 10 years of positive clinical data and the world’s longest commercial history of IOL design & manufacturing, the C-flex platform is one of the highest quality and best-designed monofocal IOLs on the market.

Today, the Rayner primary IOL range continues to deliver on our promise, with an innovative portfolio of monofocal, toric and multifocal IOLs based on this single, proven platform

When considering an intraocular lens, what's important to you ?

Click on + below to see the features and benefits of the Rayner Primary Platform.


Optimal visual quality in all lighting conditions

Aspheric optic technology reduces spherical aberration:3,4

  • Excellent contrast sensitivity and retained depth of field from aberration-neutral aspheric optic3,4
  • Available in two optic sizes; 5.75mm or 6.25mm

An IOL free from vacuoles and glistenings8

  • Single piece IOLs created from Rayacryl®
  • Compressible material for delivery through a small incision
  • Excellent handling characteristics with controlled unfolding within the capsular bag
  • Low silicone oil adherence9
  • Excellent uveal biocompatibility16
  • Hydrophilic acrylic material with low inflammatory response10
  • Low refractive index (1.46) linked to low incidence of glare and external reflections17

Peace of mind with low rates of posterior capsular opacification (PCO)

Rayner's 360° Amon-Apple Enhanced Square Edge creates a physical barrier to prevent epithelial cell migration7

At 12 months 0.6%

9.3 ± 5.5 months
(range 2.6 - 22.7 months)

Follow-up period: 5.3 – 29 months

At 24 months 1.7%

Study of 3,461 patients receiving Rayner C-flex 570C IOLs over a 24 month period, Nd:YAG capsulotomy rates were extremely low and comparable with hydrophobic acrylic lenses with square-edge optics.7


Reliable optical outcomes and a low rate of post-operative complications

Rayner's Anti-Vaulting Haptic (AVH) Technology® provides proven rotational and centrational stability, and excellent fixation in the capsular bag1

  • Superb centration
    – Maximum offset of only 1mm 3 months after surgery2
  • Excellent rotational and torsional stability2

Scientific Papers and Supporting Materials