Rethinking Tear Exchange in Sclerals - Takeaways - MDSpire
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Rethinking Tear Exchange in Sclerals
Discover how innovative channel modifications in scleral lenses can significantly enhance tear exchange and mitigate common complications, according to recent findings by Dr. Melissa Barnett.
Scleral lenses have minimal tear exchange compared to soft and corneal rigid lenses, leading to complications like debris and corneal hypoxic stress.
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Modifications such as fenestrations, notches, or channels can enhance tear exchange during scleral lens wear and reduce associated complications.
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A study with nine adults tested three landing zone modifications: toric, peripheral notches, and channels, to assess their impact on tear exchange.
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The channel design significantly increased fluorescent intensity and tear ingress, particularly in the corneal periphery, compared to notched and toric designs.
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Results suggest that channel modifications improve short-term tear exchange in scleral lenses, guiding future innovations in lens customization.
