The Prime LIMBAL is an intra-limbal contact lens design that is larger than conventional contact lenses, with a standard diameter of 11.2 mm. This design has several benefits:

1. Better Centration: The larger diameter of the Prime LIMBAL helps to improve the centration of the lens on the cornea. This means that the lens is more likely to stay in the correct position, which can improve vision and reduce the risk of discomfort or irritation.
2. Improved Comfort: The Prime LIMBAL design can be more comfortable to wear than conventional contact lenses. The larger size means that the lens is less likely to move around on the eye, which can reduce irritation and improve comfort.
3. Mask Irregularity: The Prime LIMBAL design can help to mask corneal irregularities, which can be a problem for some contact lens wearers. By providing a larger, more stable surface area, the lens can help to even out the surface of the cornea and improve vision.