What is measured with the Front Toric lens?

The Front Toric lens is specifically designed to correct astigmatism by addressing both types: corneal and lenticular astigmatism. Corneal astigmatism arises from irregularities in the cornea's shape, while lenticular astigmatism is caused by imperfections in the lens of the eye.

The unique design of Front Toric lenses allows for their alignment along the steepest or flattest meridian of the cornea, ensuring that the lens effectively compensates for distortions caused by both types of astigmatism. This dual capability makes them versatile in addressing a wider range of refractive errors compared to lenses that only target one type.

In contrast, lenses focused on just corneal astigmatism (greater than 2 diopters) wouldn't take into account the potential lenticular contributions. Similarly, options that suggest these lenses measure neither type would overlook the primary function of Toric lenses, which is correcting for astigmatism in both aspects to provide clearer vision for patients.