Does a higher astigmatism prescription mean thicker lenses?

Generally, high astigmatism may lead to thicker lenses, but this is not always the case and depends on the lens material, design, and frame selection. If in doubt, it is recommended to consult a professional eye care provider in advance. Detailed analysis is as follows:

If standard spherical lenses or lenses with lower refractive index (e.g., 1.56 or below) are selected and the astigmatism is relatively high (e.g., over 200 degrees), the lens will have increased optical thickness in specific meridians to correct the astigmatism. When paired with larger frames, the edge thickness becomes more noticeable, resulting in an overall thicker appearance and potentially a slightly heavy feeling when worn.

However, if high-index lenses (e.g., 1.60 or above) or aspheric lenses are chosen, even with high astigmatism, the overall lens thickness can be effectively controlled through optimized optical design and reduced peripheral bulk. Combined with appropriately sized smaller frames, lens thickness can be further minimized, resulting in a slimmer, more attractive appearance and improved wearing comfort.

When getting glasses, discuss your needs with your optician and select a suitable refractive index based on your astigmatism level and budget. Opt for frames that match your pupillary distance to minimize edge thickness. After receiving your glasses, try them on and allow time for adaptation; adjust promptly if discomfort occurs, ensuring both visual performance and wearing experience meet expectations.