Safilens has launched the Open 30 Presbyo monthly silicone-hydrogel lens for presbyopia.
The new lens, like the fusion 1day presbyo daily, uses a patented afocal design where the lens is neither multi-focal nor progressive. Instead, it features a small hyper-refractive central area that keeps paraxial optical rays out of the retinal image.
The company said the afocal design increased the depth of field and consequently the width of the accommodation range and unlike a multi-focal lens which required a complex cerebro-ocular adaptation process, no adaptation time is needed, since simultaneous vision is not involved in the process.
‘Afocal design offers multiple benefits: it prevents all the aberrations caused by stronger lenses, a reduction in the number of parameters (only 61), a simpler fitting process and easy adaptation also for the most demanding myopic patients,’ said Vincenzo Bruno, Safilens managing director.
A LacriMass design also allows for non-uniform distribution of the tear film on the outer surface of the lens, increasing its thickness in the peripheral areas, where the major causes of eyestrain arise.
Open 30 Presbyo is available with an 8.70mm base curve, 14.10mm diameter and powers ranging from + 6.00D to – 6.00D.
