Manny’s Tip from the Lab: Lens Wettability

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One of the most important lens parameters is the material’s oxygen permeability or Dk value. Did you know that higher DK materials have a lower wettability? Patients with severe ocular surface disease may benefit from a lower Dk material and thus higher wettability. See below for BostonSight SCLERAL material options and their accompanying Dk value.

Remember that Hydra-PEG significantly improves lens wettability. Hydra-PEG coating can be added for a one-time additional fee of $25 per lens.

If you would like more information on selecting lens materials, please refer to this article from the Review of Contact Lenses.

Choosing Your Scleral Lens Materials

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Which polymers are you choosing? There are different properties and customizations, depending on the material you choose.

If you are using Contamac materials, and the lens has a hydrophobic spot, Contamac recommends soaking the lens longer than usual when cleaning, up to 48 hours. This extra long soak helps with wettability, as dirt and grease on the lens inhibit wettability.

Would you like color in the lenses? The ice blue option from Boston XO2 may be helpful for patients who have difficulty seeing clear lenses. The composition of the material is the same as the regular XO2 material, including UV protection. Order the XO2 ice blue material for your scleral lenses in FitConnect.

  1. Log into your FitConnect account and select your patient
  2. When placing your order, use the drop-down menu next to Material. Boston XO2 (Ice Blue) is the last option.

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