In keratoconus education, what is the purpose of scleral lenses in management?

In keratoconus education, what is the purpose of scleral lenses in management?

• A. To improve vision beyond glasses due to corneal thinning
• B. To cure keratoconus
• C. To decrease eyelid inflammation
• D. To reduce intraocular pressure

Answer: (A)

Scleral lenses are used in keratoconus to improve vision by creating a smooth, stable optical surface over the irregular cornea. In keratoconus, the cornea becomes thin and cone-shaped, causing irregular astigmatism and higher-order aberrations that glasses often can’t fully correct. A scleral lens vaults over the cornea and sits on the sclera, with a tear-filled reservoir between the lens and the cornea. That tear layer acts like a cushion and a new refractive surface, neutralizing much of the corneal irregularity and delivering clearer vision—often better than what spectacles can provide. They’re not a cure for keratoconus (the disease isn’t eradicated), and they don’t address eyelid inflammation or intraocular pressure.

Scleral lenses are used in keratoconus to improve vision by creating a smooth, stable optical surface over the irregular cornea. In keratoconus, the cornea becomes thin and cone-shaped, causing irregular astigmatism and higher-order aberrations that glasses often can’t fully correct. A scleral lens vaults over the cornea and sits on the sclera, with a tear-filled reservoir between the lens and the cornea. That tear layer acts like a cushion and a new refractive surface, neutralizing much of the corneal irregularity and delivering clearer vision—often better than what spectacles can provide. They’re not a cure for keratoconus (the disease isn’t eradicated), and they don’t address eyelid inflammation or intraocular pressure.