Question

Besides Ortho-K, Orthotool is useful for:

A) Corrective eyewear for presbyopia
B) Treating glaucoma
C) Contact lenses for dry eyes
D) Specialty lenses for astigmatism

Answer 1

Ortho tool is primarily used for designing and fitting specialty contact lenses that correct astigmatism, by creating a uniform refractive surface over the cornea.

Step-by-step explanation:

Besides Ortho-K (Orthokeratology), which is used for temporarily correcting myopia, Ortho tool is also used for designing and fitting specialty lenses for astigmatism. Astigmatism is a common vision defect caused by irregularities in the shape of the cornea or lens in the eye. Specialty contact lenses help correct astigmatism by creating a uniform refractive surface. Corrective eyewear for presbyopia, treating glaucoma, and creating contact lenses for dry eyes are distinct from Ortho tool's purpose of focusing mainly on correcting irregular corneal refractive errors such as astigmatism.