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When selecting contact lenses that resist deposit buildup, you need to consider the material and design of the lenses. Deposits from tear film components, such as proteins and lipids, can accumulate on lenses, leading to discomfort and reduced visual clarity.
Silicone Hydrogel Lenses
Silicone hydrogel lenses are popular for their high oxygen permeability. However, the silicone component can attract lipid deposits, potentially affecting comfort and vision. To combat this, manufacturers have developed advanced surface treatments and coatings to improve resistance from deposits.
For instance, some lenses feature a permanent plasma surface that minimizes lipid and protein buildup to maintain consistent comfort throughout the wearing period.
Rigid Gas Permeable (RGP) Lenses
RGP lenses are made from durable materials that naturally resist deposits. Their non-porous surface minimizes the accumulation of proteins and lipids for clearer vision and improved comfort over time. In addition, RGP lenses allow more oxygen to reach the cornea.
