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Product features
| Lens type Toric lenses |
Product type toric hard lens |
ASCON BTC ( bitoric-compensated )
Hard gas permeable, individually manufactured contact lens with UV filter.
The ASCON®-BTC has a toric back surface in the ASCON® design, combined with a toric front surface. The torus of the anterior surface is selected so large that it compensates for the induced astigmatism of the posterior surface. This gives the ASCON®-BTC the effect of a spherical contact lens on the eye.
Please only order this type of lens if you are already wearing it successfully.
It will be made individually for you. Exchanges, cancellations or returns, even if the contact lens is in perfect condition, are excluded.
The ASCON®-BTC has a toric back surface in the ASCON® design, combined with a toric front surface. The torus of the anterior surface is selected so large that it compensates for the induced astigmatism of the posterior surface. This gives the ASCON®-BTC the effect of a spherical contact lens on the eye.
Please only order this type of lens if you are already wearing it successfully.
It will be made individually for you. Exchanges, cancellations or returns, even if the contact lens is in perfect condition, are excluded.
Delivery range of ASCON BTC:
BC-1:
6.50 to 10.0 in 0.05 increments
BC-2:
6.50 to 10.0 in 0.05 gradation
Power-1:
+25.00 to -25.00 in 0.25 increments
Power-2:
+25.00 to -25.00 in 0.25 increments
DIA:
7.0 to 12.2 in 0.1 increments
Materials:
Bo-EQ-UV (Boston Equa) with DK 47
Bo-ES-UV (Boston ES) with DK 18
Bo-ES2-UV (Boston ES2 identical to Boston EO) with DK 58
Bo-XO-UV (Boston XO) with DK 100
Bo-XO2-UV (Boston XO2) with DK 141
Ac-Acuity200-UV (Acuity 200) with DK 211
Pa-HDS-UV (Paragon HDS) with DK 53
Co-Optimum-Extra-UV (Optimum Extra) with DK 100
Please note: Some material/color combinations cost a special surcharge
Back surface eccentricities:
AS4 to AS9.
BC-1:
6.50 to 10.0 in 0.05 increments
BC-2:
6.50 to 10.0 in 0.05 gradation
Power-1:
+25.00 to -25.00 in 0.25 increments
Power-2:
+25.00 to -25.00 in 0.25 increments
DIA:
7.0 to 12.2 in 0.1 increments
Materials:
Bo-EQ-UV (Boston Equa) with DK 47
Bo-ES-UV (Boston ES) with DK 18
Bo-ES2-UV (Boston ES2 identical to Boston EO) with DK 58
Bo-XO-UV (Boston XO) with DK 100
Bo-XO2-UV (Boston XO2) with DK 141
Ac-Acuity200-UV (Acuity 200) with DK 211
Pa-HDS-UV (Paragon HDS) with DK 53
Co-Optimum-Extra-UV (Optimum Extra) with DK 100
Please note: Some material/color combinations cost a special surcharge
Back surface eccentricities:
AS4 to AS9.
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