Eyhance Toric: Calculator, IOL, Lens, Eyhance Toric II, Range, Parameters & Spec Sheet

Eyhance Toric:

• What is Eyhance Toric?
• Eyhance Toric Calculator
• Eyhance Toric IOL
• Eyhance Toric Lens
• Eyhance Toric II
• Eyhance Toric Range
• Eyhance Toric Parameters
• Eyhance Toric Spec Sheet

What is Eyhance Toric?

The TECNIS Eyhance Toric II is a toric intraocular lens (IOL) designed for adults undergoing cataract surgery who have pre-existing corneal astigmatism of at least 1.0 diopter. It combines the astigmatism-correcting function of a toric IOL with the enhanced-monofocal optical design of the TECNIS Eyhance platform. The Eyhance optic has a continuous increase in refractive power from the peripheral region toward the center, a design intended to slightly extend depth of focus compared with a conventional monofocal IOL. Johnson & Johnson Vision describes the Eyhance family as an enhanced monofocal platform rather than a multifocal lens. The Eyhance Toric II is intended to be placed in the capsular bag after cataract extraction and is designed to reduce residual refractive cylinder while providing high-quality distance vision.

A major feature of the Eyhance Toric II platform is its rotational-stability design. The lens uses modified-C haptics with a squared and frosted configuration intended to help maintain the planned axis after implantation. Manufacturer-reported data describe a mean rotation of approximately 0.94 degrees at three months in one clinical dataset, with 100% of evaluated surgeries having less than 5 degrees of rotation at three months. These results should not be interpreted as a guarantee for an individual patient because surgical technique, capsular-bag characteristics, ocular anatomy, and other factors can affect IOL position. The lens is intended to correct distance vision and reduce residual astigmatism; it does not provide the same optical design as a multifocal or full-range-of-vision IOL. Final IOL selection should therefore be based on complete biometry, keratometry, ocular examination, and the patient's visual goals.

Eyhance Toric Calculator

The TECNIS Toric Calculator is the manufacturer-supported planning tool used to help select an appropriate toric IOL cylinder power and implantation axis. It incorporates important preoperative information such as keratometric cylinder and axis, the planned incision location, surgeon-estimated surgically induced astigmatism (SIA), and biometric measurements. The calculator can therefore produce an IOL recommendation that is more individualized than simply choosing a toric power from the measured corneal cylinder alone. Johnson & Johnson specifically recommends accurate keratometry and biometry together with the TECNIS Toric Calculator when planning toric implantation. The calculator also incorporates an algorithm addressing posterior corneal astigmatism (PCA), although the manufacturer notes that this algorithm has limitations and was not prospectively assessed in the original clinical study in the same way as the primary lens outcomes.

When using a toric calculator, accuracy of the input measurements is extremely important. A small error in keratometry, axis measurement, ocular surface condition, biometry, or estimated SIA can affect the recommended IOL and its intended axis. The calculator should therefore be used as a clinical planning aid rather than as a substitute for surgeon judgment. The manufacturer notes that variability in preoperative measurements can influence outcomes, particularly when treating lower amounts of astigmatism. The planned surgical incision location also matters because it can alter the final refractive result. For this reason, the surgeon should verify the calculated lens model and intended axis before implantation and follow the current manufacturer instructions for use.

Eyhance Toric IOL

The Eyhance Toric IOL is intended to address two optical needs during cataract surgery: correction of pre-existing corneal astigmatism and provision of high-quality monofocal-style distance vision. The Eyhance optical design is different from a traditional monofocal because its refractive power gradually increases toward the center of the optic. Manufacturer information indicates that this design is intended to slightly increase depth of focus compared with the TECNIS 1-Piece IOL, while maintaining the spherical-aberration correction associated with the TECNIS platform. The practical goal is to provide strong distance vision with some improvement in intermediate visual performance compared with a conventional monofocal, although patients should not expect the full near range associated with a multifocal or trifocal IOL.

The toric component uses cylinder correction built into the IOL and requires accurate rotational alignment. If the lens rotates away from the calculated axis, the astigmatism correction can be reduced and residual refractive cylinder may remain. The Eyhance Toric II design uses squared and frosted haptics to improve rotational stability. Manufacturer data report strong rotational stability, but individual results can vary. Correct surgical planning, complete removal of viscoelastic material, appropriate capsular-bag management, and accurate alignment remain important. The lens is indicated for adult patients undergoing cataract surgery who have at least 1.0 diopter of pre-existing corneal astigmatism and desire reduction in residual refractive cylinder.

Eyhance Toric Lens

The Eyhance Toric lens is a foldable posterior-chamber IOL designed for placement inside the capsular bag. Like other TECNIS lenses, it uses a hydrophobic acrylic material with ultraviolet-absorbing properties. The optic has a 6.0-mm diameter, while the overall lens length is approximately 13.0 mm. Its toric anterior surface provides the cylinder correction, while the optic design incorporates the Eyhance enhanced-monofocal concept. The haptics are integrated with the optic and use a modified-C configuration. These design characteristics are intended to provide predictable positioning and rotational stability following cataract surgery.

The lens should be selected using appropriate biometric and keratometric information rather than by cylinder range alone. The final choice depends on the patient's corneal astigmatism, spherical equivalent, axial measurements, incision location, SIA, and other surgical factors. The toric markings on the IOL indicate the intended cylinder axis and must be aligned according to the surgical plan. Because toric correction is directional, incorrect axis placement can reduce the effectiveness of astigmatism correction. The surgeon should therefore confirm the intended axis before implantation and verify final alignment after the lens is positioned. Product specifications and available powers can vary by country, so the current local product labeling should always be consulted.

Eyhance Toric II

The TECNIS Eyhance Toric II represents the toric version of the Eyhance enhanced-monofocal platform. Its design combines the Eyhance refractive profile with a toric correction and the TECNIS Toric II haptic platform. The manufacturer highlights its squared and frosted haptic design as an important feature for rotational stability. In one manufacturer-reported study, the mean rotation was less than 1 degree at one week, one month, and three months, and 100% of evaluated eyes had 5 degrees or less of rotation at three months. These findings support the lens's stability characteristics but should be considered alongside the limitations of clinical study design and the fact that individual surgical outcomes can differ.

The Eyhance Toric II is intended for adult cataract patients with pre-existing corneal astigmatism of 1.0 diopter or greater. The manufacturer's U.S. information specifies placement in the capsular bag after phacoemulsification. As with other toric IOLs, proper preoperative measurement and axis planning are essential. The manufacturer specifically cautions that residual viscoelastic or excessive capsular-bag inflation can permit the lens to rotate and cause misalignment. The choice of lens model, cylinder power, and implantation axis should therefore be made using the current TECNIS Toric Calculator and the applicable product instructions rather than relying on a generic toric conversion chart.

Eyhance Toric Range

The available Eyhance Toric II range should be checked against the current regional product catalog because IOL availability can differ between countries. The related TECNIS Toric II platform illustrates the type of cylinder progression available within the TECNIS toric family, with cylinder powers specified at the IOL plane and corresponding corneal-plane values. For the TECNIS Toric II platform, the listed cylinder powers are 1.00, 1.50, 2.25, 3.00, 3.75, 4.50, 5.25, 6.00, 7.00, and 8.00 diopters at the IOL plane. The corresponding corneal-plane values listed by the manufacturer are 0.69, 1.03, 1.54, 2.06, 2.57, 3.08, 3.60, 4.11, 4.80, and 5.48 diopters. These figures demonstrate why IOL-plane and corneal-plane cylinder values should not be treated as interchangeable.

The available spherical power range also depends on the exact model and market. For the TECNIS Toric II platform, Johnson & Johnson lists spherical powers from +5.0 D through +34.0 D in 0.5-D increments. The specific Eyhance Toric II model numbers and combinations available to a surgeon should be confirmed in the current local specification sheet or ordering system. Patients should not use the published range to select an IOL themselves because the correct lens is determined from individualized ocular measurements. In particular, toric IOL planning must account for keratometric cylinder, axis, posterior corneal astigmatism, incision location, SIA, and biometric data.

Eyhance Toric Parameters

Important Eyhance Toric parameters include optic diameter, overall diameter, spherical power, cylinder power, cylinder axis, material, refractive index, haptic configuration, and biometric constants. The TECNIS Toric II specification sheet lists a 6.0-mm optic, 13.0-mm overall length, hydrophobic acrylic material, a refractive index of 1.47 at 35°C, and a modified-C Tri-Fix haptic configuration. The listed optical biometry A-constant is 119.3, while the contact-ultrasound A-constant is 118.8 for that TECNIS Toric II platform. These values are product-specific and should not automatically be transferred to a different IOL model or measurement system.

Other important planning parameters include the theoretical anterior chamber depth and surgeon factor. The manufacturer lists a theoretical ACD of 5.7 mm and surgeon factor of 1.96 mm for optical biometry on the TECNIS Toric II platform. The corresponding contact-ultrasound values are 5.4 mm and 1.68 mm. These constants can be used within appropriate IOL calculation formulas, but the surgeon and biometry professional should use the constants supplied for the exact IOL model and calculation method being used. Because IOL formulas and biometry devices can use different conventions, copying a constant from a general online table may produce an inappropriate result. Always verify the current manufacturer specification sheet and local labeling before clinical use.

Eyhance Toric Spec Sheet

A useful Eyhance Toric spec sheet should provide the exact model number, spherical power range, cylinder options, cylinder values at the IOL and corneal planes, optic diameter, overall length, material, refractive index, haptic configuration, biometric constants, and recommended insertion system. Johnson & Johnson's official Eyhance information identifies the Eyhance Toric II as part of the TECNIS Eyhance family and provides access to product specifications and directions for use. The company also provides the TECNIS Toric Calculator as the dedicated planning tool for astigmatic patients. These official resources are preferable to third-party tables because product specifications, model availability, and labeling can change.

For clinical reference, the specification information should always be matched to the exact product model and country in which the lens is being implanted. Johnson & Johnson notes that not all products are available in all countries, and its product information is intended for healthcare professionals. The current official materials also emphasize the importance of accurate keratometry, biometry, incision information, and surgeon-estimated SIA when selecting a toric IOL. Therefore, an online article or simplified chart should be considered an educational reference rather than a substitute for the current instructions for use, manufacturer calculator, or surgeon's clinical judgment.