Which lens type is used to support the ocular surface in LSCD?

Which lens type is used to support the ocular surface in LSCD?

• A. Soft contact lenses
• B. Scleral lenses
• C. PMMA lenses
• D. No lens used

Answer: (B)

In limbal stem cell deficiency, the corneal surface is fragile and tear film stability is lost. The lens that best supports this surface is one that vaults over the cornea and rests on the sclera, creating a fluid reservoir between the lens and the cornea. This reservoir keeps the corneal surface continuously hydrated, fills in irregularities, and cushions the eye from blinking—all of which protect healing tissue and improve comfort and vision. Scleral lenses accomplish this by sealing on the sclera and delivering a stable, long-lasting tear layer beneath the lens. Soft contact lenses sit on the cornea and don’t provide the same protective, hydrating reservoir, while PMMA lenses, though rigid, are less ideal for corneal health in LSCD due to material properties and fit. No lens offers the same level of support.

In limbal stem cell deficiency, the corneal surface is fragile and tear film stability is lost. The lens that best supports this surface is one that vaults over the cornea and rests on the sclera, creating a fluid reservoir between the lens and the cornea. This reservoir keeps the corneal surface continuously hydrated, fills in irregularities, and cushions the eye from blinking—all of which protect healing tissue and improve comfort and vision. Scleral lenses accomplish this by sealing on the sclera and delivering a stable, long-lasting tear layer beneath the lens. Soft contact lenses sit on the cornea and don’t provide the same protective, hydrating reservoir, while PMMA lenses, though rigid, are less ideal for corneal health in LSCD due to material properties and fit. No lens offers the same level of support.