What condition indicates that a Bitoric lens might be necessary?

A Bitoric lens is typically indicated for patients with high corneal astigmatism. This type of lens is specifically designed to correct significant amounts of astigmatism by incorporating both a spherical and a cylindrical component. High corneal astigmatism occurs when there is a notable difference in curvature between the steep and flat meridians of the cornea, leading to distorted vision.

In cases of high astigmatism, standard soft lenses or spherical lenses may not provide sufficient correction, making Bitoric lenses a more effective choice. These lenses can align with the corneal shape, ensuring that vision is corrected more accurately, and when prescribed, can lead to improved visual outcomes for patients.

Conditions like low corneal astigmatism, minimal astigmatism, or average astigmatism typically don't demand the specialized design and features of a Bitoric lens, as lower degrees of astigmatism can often be effectively managed with simpler corrective lenses.