Rayner T-flex^® Aspheric Toric IOLs

Hydrophilic Acrylic Injectable Aspheric Toric
IOLs with Amon-Apple Enhanced Square Edge

Rayner T-flex^® Aspheric Toric IOLs (573T and 623T) are a superior alternative to toric IOLs with a restricted range of torus and offer a precise, superior alternative to incisional keratotomy and Limbal Relaxing Incisions (LRIs) for the treatment of pre-existing corneal astigmatism. With T-flex^® Aspheric Toric IOLs, the torus (cylinder) is implemented on the anterior surface of the optic and the Amon-Apple Enhanced Square Edge on the posterior surface.

T-flex^® Aspheric Toric IOLs are particularly useful for those cataract patients where incisional methods would provide inadequate astigmatic correction. The choice of a T-flex^® Aspheric Toric IOL leads to more precise surgical results, especially for cases of severe astigmatism: patients with a history of corneal pathology, keratoconus with penetrating keratoplasty (corneal grafts) and patients with burns and corneal scarring.

Unlike plate-haptic and multipiece toric IOLs, T-flex^® Aspheric Toric IOLs have inherent rotational stability. Superb visual outcomes are achieved because of the dependable absence of rotation in lenses designed with Rayner’s AVH Technology^®. T-flex^® Aspheric IOLs are also available in a far greater range of cylinder and sphere combinations than some other toric IOLs, which are made with only a limited range of cylindrical additions. T-flex^® Aspheric Toric IOLs correct much higher astigmatism.

Rayner T-flex® Aspheric IOLs are currently manufactured as either model 573T or model 623T, having a 5.75mm optic or a 6.25mm optic respectively.

The model selection is made automatically by Rayner so that the largest possible diameter optic is supplied for any particular sphere / cylinder / injector nozzle combination.

Model 623T is designed for low and medium power lenses and is anatomically correct for the larger, myopic eye. Model 573T is designed for higher power lenses.

In addition to an excellent toric correction, T-flex® Aspheric Toric IOLs offer all the additional advantages of C-flex® and Superflex®:

• AVH Technology® for perfect centration, anterior / posterior and torsional stability
• Exceptional rotational stability
  – Accurate, predictable and sustainable visual outcome with superior astigmatic correction
• Amon-Apple Enhanced Square Edge for reduced PCO
• Manufactured from Rayacryl® hydrophilic acrylic co-polymer:
  – High biocompatibility
  – Low PCO
  – Optical purity – no vacuoles or glistenings
  – Low Silicone Oil adherence
  – Superb handling characteristics.
• Good range of spherical and cylindrical correction available.

Physical parameters

• Optic Body Diameter: 573T: 5.75mm 623T: 6.25mm
• Overall Length: 573T: 12.00mm 623T: 12.50mm
• Estimated SRK A-Constant: 118.0
• Theoretical ACD: 4.97mm

Power Availability (573T and 623T)

Standard Power Range

• Spheres: +6.0D to +30.0D in 0.5D increments
• Cylinders: +1.0D to +6.0D in 0.5D increments

Alternative Toric powers also available within the range:

• Spheres: -10.0D to +35.0D maximum (spherical equivalent) in 0.5D increments
• Cylinders: +1.0D to +11.0D in 0.25D increments.

Presentation

The Rayner T-flex® Aspheric (573T and 623T) hydrophilic acrylic injectable Toric IOLs are supplied in 0.9% saline solution in a pouched blister pack, sterilised by moist heat and presented in a convenient, ready to use Lens Injection System Pack containing:

• One T-flex® Aspheric injectable IOL
• One Rayner Single Use Soft-Tipped Injector

The IOL axis of lowest dioptric power is defined by two diametrically-opposed lines, etched onto the IOL periphery, which must be correctly aligned, intraoperatively, with the axis of the highest power of the cornea