The lowest wetting angles available and exceptionally high oxygen permeability – that’s what sets our Optimum range of gas permeable (GP) materials apart from the competition. Optimum is FDA-approved for a wide variety of conditions, such as myopia, hyperopia, astigmatism and aphakia, and is the speciality labs’ first choice material for presbyopia correction. Its stability and balanced properties make it ideally suited for a range of lens designs, including toric, multifocal, keratoconus and ortho-k.

Optimum comes in five Dk ranges, giving laboratories the ability to recommend the ideal lens design and improve performance.

Introducing Optimum Infinite, the newest addition to the Optimum range that exceeds convention. With the highest combination of oxygen permeability (200Dk) and flexural modulus (1341MPa), you can change the possibilities. Find out more

Features and benefits

  • Exceptional surface wettability and visual acuity
  • Maximum wearer comfort
  • Full range of oxygen permeability
  • High degree of stability and reproducibility
  • Wide application to a variety of modalities and indications
  • Offers patients the highest quality corneal health
  • Extensive clinical data on file
  • FDA approved


  • Routine myopia, hyperopia, astigmatism
  • Presbyopic designs
  • Corneal moulding rehabilitation
  • Keratoconus, PMB
  • Post-refractive surgery
  • Large diameter (semi-scleral/scleral)
  • High oxygen demand corneas
  • Ortho-k and corneal reshaping
  • Dry eyes


Optimum technical information

Material characteristics

PropertyOptimum ClassicOptimum ComfortOptimum ExtraOptimum Extreme
ClassificationFocon III 2Focon III 4Focon III 4Focon III 5
USANRoflufocon ARoflufocon CRoflufocon DRoflufocon E
Oxygen permeability (ISO) @ 35°C (barrers) 2665100125
Refractive index1.4501.4371.4311.432
Hardness (Shore D)83797577
Specific gravity1.
Receding contact angle (DCA)12636

Please note: These are typical values. Always check the certificate of conformity supplied with the goods for the actual values of the batch.

Manufacturing consumables

  • Low melt wax
  • Water soluble wax
  • Contapol 3 polishing compound 
  • Microfiber polishing cloth
  • Silk polishing cloth
  • Delrin polishing cups
  • Delrin polishing sponge
  • Delrin drum polishing sponge
  • Contasolve de-blocking solution
  • Roller sponges


  • Laboratory lens handler
  • Double soft lens mailers
  • RGP double mailers
  • Large RGP double mailers
  • Plastic tamper evident RGP vial
  • Double opticase plastic RGP vial
  • OptimumRGP trial set
  • Lens remover
  • DMV RGP lens remover
  • DMV scleral lens removers
  • Lens catch mat


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