Featuring a wide range of oxygen permeabilities, excellent wettability and high stability has made the Optimum range of gas permeable (GP) materials one of the most popular choices on the market. Optimum is FDA-approved for a broad range of indications and contact lens modalities. Its stability and balanced properties make it ideally suited for a range of lens designs, including toric, multifocal, keratoconus and scleral.

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 a unique combination of oxygen permeability (180Dk) and flexural modulus (1341MPa), you can change the possibilities. Find out more

Features and benefits

  • Excellent surface wettability
  • Full range of oxygen permeability
  • High degree of stability and reproducibility
  • Wide application to a variety of modalities and indications
  • Clinical data on file
  • FDA approved


Optimum technical information

Please Note: Regulatory requirements and standards vary from country to country, and are constantly evolving. As a global company, we want to be sure we provide you with detailed technical information, specific to your market, where appropriate, rather than using the condensed and simplified technical information on the website. If you need to use technical data for quality paperwork, or for a regulatory submission, please contact your account manager to obtain this precise and detailed information to support your regulatory requirements, we will be happy to help. 

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 index1.451.441.431.43
Hardness (Shore D)83797577
Specific gravity1.

Please note: Some values may have been rounded for presentation purposes. Please contact your account manager for further details.

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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