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 increments
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
Back surface eccentricities:
AS4 to AS9
Materials:
various ( see selection box + illustrations)
Engraving:
To better distinguish right and left lens, a lens can optionally be engraved with a light or dark dot.
BC-1:
6.50 to 10.0 in 0.05 increments
BC-2:
6.50 to 10.0 in 0.05 increments
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
Back surface eccentricities:
AS4 to AS9
Materials:
various ( see selection box + illustrations)
Engraving:
To better distinguish right and left lens, a lens can optionally be engraved with a light or dark dot.