RGP lenses

Nissel Sixteen-50 & Eighteen-20

Nissel Sixteen & Eighteen

The new standard in large diameter rigid contact lenses

Bridge over complications with this custom-made scleral range.  With a 12-lens trial set and an easy 3 step fitting process, these lenses offer protection, correction, comfort & stability for both regular and irregular corneas.

Nissel Sixteen-50 & Eighteen-20

Product information

Material:   (Optimum Extra) Focon III 4

Material Colour:   Clear                

Permeability (Dk):   100 x 10 -11

Diameter:   16.50mm or 18.20mm

Power Range:   -30.00 to +30.00 (0.25D steps)

Higher Powers may be available

Apical clearance

There is 1 fitting set available*

Sixteen-50 / Eighteen-20 12 Lens set

Nissel Sixteen or Nissel Eighteen-20 12 lens fitting set
Diameter mm 16.50mm or 18.20mm
Power Plano
Lens 1 2 3 4 5 6 7 8 9 10 11 12
Code F3 F2 F1 A S1 S2 S3 K1 K2 K3 K4 K5
SAG mm 3.35 3.45 3.55 3.65 3.80 3.95 4.10 4.20 4.30 4.40 4.55 4.70
Lens 1 2 3 4 5 6 7 8 9 10 11 12
Code F3 F2 F1 A S1 S2 S3 K1 K2 K3 K4 K5
SAG 3.35 3.45 3.55 3.65 3.80 3.95 4.10 4.20 4.30 4.40 4.55 4.70
K Reading 8.60 8.35 8.10 7.85 7.60 7.35 7.10
Normal and median depth eyes Keratoconus and high depth eyes

*A registered account with Cantor Barnard is required.

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Place an order

Please be aware that Cantor Barnard is an Optician Only Contact Lens Manufacturer. Therefore, we do NOT sell to the general public unless you are qualified to fit contact lenses.

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We receive thousands of store requests a month.
If you have requested an online account and are still waiting for it to be approved, email us with your account number so we can approve this for you.

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Eye conditions

Suitable lenses

Below are types of lenses offered by Cantor Barnard and the clinical indications in which they can be used for:

Sterile soft contact lenses

  • Myopia
  • Hyperopia
  • Astigmatism
  • Presbyopia
  • Symptoms that can co-occur with Academic Skills Disorders
  • Symptoms that can co-occur with Colour Deficiency
  • Masking of Cosmetic Defects of the Eye

Rigid gas permeable lenses

  • Myopia
  • Hyperopia
  • Astigmatism
  • Presbyopia
  • Keratoconus