There are a few downsides to aspherical lenses. The main issue is their cost since they take more effort to manufacture. These lenses may also require reflective coatings that traditional lenses do not, and they require accurate measurements of your pupillary distance.

Aspheric lenses offer many advantages, such as the correction of spherical aberrations and improved image quality, but also have some disadvantages, including a complex design and manufacturing process, fragility, and limited availability.

Cons of Aspheric Lenses Aspheric lenses can be more expensive to make, which means your glasses will cost more. You might be ready to pay more if it helps your eyes look less magnified, but replacing your current glasses could be expensive. You’ll likely want anti-scratch and anti-reflective coatings, too, which will add to the cost.

The biggest flaw of aspheric lenses is their manufacturing cost which is heavily inflated because of all the effort that goes into it. Such lenses are also often supplied with reflective coatings, which isn’t the case with regular models, like Sigma lenses. Additionally, they demand precise measurements of your pupillary distance.

Disadvantages of Aspheric Lenses Cost – Aspheric lenses can be more expensive than traditional lenses, which can be a disadvantage for people on a budget. Complexity – Aspheric lenses are more complex to manufacture than traditional lenses, which can make them less durable and more prone to scratches or other damage.