The correction of ASTIGMATISM OF THE CORNEA is possible by the insertion of a TORIC IMPLANT that generates an astigmatism in opposite direction of the corneal one. It allows to neutralize the entire eye astigmatism. The toric implant compensates astigmatism induced by corneal.
Freedom TORIC
Astigmatism is very common before and after cataract surgery. Almost 40% of people who are candidates for cataract surgery have at least 1.0 diopter (D) of astigmatism, which is enough to cause noticeably blurred vision without eyeglasses or visual aids.
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Description
Why choose the FREEDOM TORIC IOLs?
The premium design of our TORIC Hydrophobic Lenses provides distance vision for ASTIGMATIC CATARACT PATIENTS who desire spectacle independency.
Our TRIFOCAL TORIC Hydrophobic Lenses provides both NEAR, INTERMEDIATE and FAR vision for ASTIGMATIC CATARACT PATIENTS who desire spectacle independency. It combines the CYLINDER technology of a TORIC lens in the anterior side and the Diffractive-Refractive Element of a TRIFOCAL lens in the posterior side.
Freedom provides large DIOPTER range of astigmatism correction IOLs with custome made PRECISION PERFECTION. Spherical power from 10.0D to 30.0D and cylinder power range is upto 6.0D with half diopter increments.
Following cylinder options are available to suit the requirement of any patients :
| IOL Cylinder Power |
Recommended Corneal Astigmatism Correction ranges |
| 1.50D | 0.75 - 1.5D |
| 2.25D | 1.50-2.00D |
| 3.00D | 2.00-2.50D |
| 3.75D (monofocal only) | 2.50-3.00D |
| 4.50D (monofocal only) | 3.00-3.50D |
| 5.25D (monofocal only) | 3.50D-4.00D |
| 6.00D (monofocal only) | 4.00D and UP |
Toric Sucess Parameters
Patient with regular pre-operative astigmatism with an intact capsular bag, and no pre-existing ocular pathology who desire spectacle independency are good candidates for Toric surgery. Patient with keratoconus, or irregular astigmatism are recommended against Toric lens.
Toric IOL Power calculation:
⦁ SPHERICAL POWER – Is determined by using the preferred method such as optical biometry as for conventiol IOLs using personalized A-constant.
⦁ CYLINDRICAL POWER- Steep K & Flat K values are determined through Keratometry and corneal topography for corneal measurements
⦁ With FREEDOM TORIC CALCULATOR, determine the appropriate Toric IOL model, power, & axis of placement using default SIA measurements: 0.5 D if your incision is 2.5 mm or smaller.
Preoperative Marking: Reference marks are made at 3, 6 and 9’o clock in upright position to limit cyclotorsional effect using marking tools such as level/bubble marker or free-hand marker.
Intraoperative Marking: Calculated steep axis is marked using fixation rings as Mendez at two positions (180° apart) with the guide of reference axis in supine position for alignment of Toric IOL.
Primary/GROSS IOL Alignment: After a standard cataract implantation in the capsular bag, manipulate the IOL into place within 15 to 20 degrees short of the intended axis. Remove all the residual viscoelastics gently with care.
Final IOL alignment: Rotate clockwise to align with intended axis on the cornea.
| Model | TPC602SQ | TPC602SQY | MTPC602SQ | MTPC602SQY |
| Design | Single Piece, TORIC, 360° Square Edge with Aspheric Optic | Single Piece, TORIC, Diffractive-Refractive, 360° Square Edge with Aspheric Optic | ||
| Material | Hydrophobic Acrylic | Yellow Hydrophobic Acrylic | Hydrophobic Acrylic | Yellow Hydrophobic Acrylic |
| Near Addition | N/A | +3.00D | ||
| Optic Size | 6.00mm | |||
| Over All lenght | 13.00mm | |||
| Haptic Angle | 0°, Modified C | |||
| A-Constant | A Constant : 118.4 - Hoffer Q : 5.20 - Holladay : 1.450 - Haigis : a0=1.527/a1=0.400/a2=0.100 | |||
| IOL Master | A Constant SRK/T : 119.20 - A Constant SRK/II : 119.50
Hoffer Q : 5.65 - Holladay 1 : 1.87 - Haigis : a0=1.4441/a1=0.400/a2=0.100 |
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| Sterilization | EO | |||
| Incision | 2.20 - Available in Preloaded system also | |||
