Special Glasses
Clear, natural and
aesthetic vision
Ideal single vision lens for people who need high performance of vision and correction. It not only eliminates the deformations that may occur in the peripheral areas, but also prevents the eye from appearing larger or smaller depending on the prescription dioptries. All these benefits are offered by the aspherical design on both the front and back surfaces of the lens.
Astigmatism, which occurs as a result of corneal curvature, causes these people to see objects as deformed. Sometimes a point can appear in the form of a line, sometimes in the form of a flat earth from the poles of a completely round shape. In this case, an exact replica of the object viewed on the retina never occurs. The use of a spherical design lens also does not eliminate this deformation.
Benefits of Bi-Asfera
Why should we use Bi-Asfera?
In a spherical designed eyeglass lens, as you move towards the peripheral area, the eye begins to perceive numbers outside the prescription values, causing serious image deformations in that area.
Why should we use Bi-Asfera?
With Bi-Asfera, the size of the eyes appears closest to their natural size, even at high prescription values.
Esthetically Thin & High Optical Performance
Double Aspheric
Bi-Asfera Design
The lowest astigmatism
value obtained on both
surfaces of the lens
Flatter front surface and up to 15% reduced thickness.
By providing clear vision across the entire surface of the lens, astigmatic distortion is reduced on both surfaces
Front Surface
Aspheric Design
Intermediate level of astigmatism power on peripheral area
Reduction in thickness and weight, especially at low and medium prescriptions.
Reduction in deformations in the peripheral area of the lens, thanks to the minimization of astigmatic effects
Spheric
High level of astigmatism in the peripheral area
The highest thickness and weight in all prescriptions.
High astigmatism value and reduced image quality