Single Vision

 

 

 

 

 

 

 

A single vision lens emphasises natural vision and corrects the following:

• Near-sightedness: Faraway images appear blurred while close images are reasonably in focus; corrected with ‘minus’ power convex-lenses.
• Far-sightedness: Faraway images are reasonably in focus and close images appear blurred; corrected with ‘plus’ power concave lenses.
• Astigmatism: The eyes look in two different directions at right angles to each other; corrected with the application of a cylindrical power.
• Presbyopia: Usually occurs for those people aged 40+.  They find it increasingly difficult to read, as the lens of the eye becomes less flexible and focusing on nearby objects becomes difficult. In the single vision category, reading glasses can be the solution.

Countless innovations have allowed the Single Vision design to be perfected

For instance, aspheric lenses (Nulux design) provide a thinner lens with a larger, distortion free field of vision, whilst double aspheric lenses (Nulux EP design) guarantee focused vision over their entire surface of the lens in all directions.

Single Vision lenses are available in different lens designs, they include:

• Hi-lux spheric: features a single central radius on the front surface and, depending on the prescription, different radii on the back surface.
• Nulux aspheric:  the radius leading from the centre of the front surface to its edge becomes longer, and the radii form a purer focal point. This results in less deformation in the periphery of the lens.
• Nulux EP bi-aspheric: calculated and produced according to the FreeForm principle, which allows each detail of the lens to be precisely determined to create a synergy between correction and natural sight.
   

More information on lens materials: click here