ASPHERIC LENSES

To make high-index lenses even more attractive, most of them have an ‘aspheric’ design. This means that instead of having a round (or ‘spherical’) curve on the front surface, these lenses have a curve that gradually changes from the centre of the lens to the periphery. This makes aspheric lenses noticeably flatter for a slimmer, more attractive lens profile.

Though aspheric lenses offer advantages for all prescriptions, they are particularly beneficial if you are farsighted. Aspheric lenses greatly reduce the magnified ‘big-eye’ look caused by regular, highly curved lenses for farsightedness, and they greatly reduce the ‘bulge’ of the lenses from the frame. What is more, because they have a slim profile, aspheric lenses are much lighter and provide superior peripheral vision compared to conventional lenses.

Note: As aspheric lenses have flatter curves than regular lenses, this may
cause more noticeable reflections. Therefore an anti-reflective (AR) treatment
is recommended for these lenses.