Cataract surgery and the replacement of the eye's natural lens with an unclouded synthetic substitute already makes use of sophisticated photonics technology, in the form of femtosecond laser sources for the crucial incisions, along with research into new optical diagnosis and treatment methods.
A team at the Spanish National Research Council (CSIC) has now developed a portable device able to simulate the multi-focal visual corrections that a synthetic intraocular lens (IOL) can provide to a patient, helping them to appreciate what the surgery might offer. The work was published inOptica.
An increasingly attractive solution for presbyopia - the loss of focusing power in the eye which comes to most with advancing years, if not before - is multi-focal lenses using diffractive or refractive profiles, resulting in bifocal, trifocal, and extended-depth-of-focus designs. Click to read more