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; such lenses, having a maximum torus of 3.0D or 3.5D, are designed solely for those cataract patients with small, regular, pre-existing astigmatism. 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 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
• Unique 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