Page 100 - The Indian Optician Digital Edition November-December 2021

A NEW

TRIFOCAL CORNEAL

INLAY FOR

PRESBYOPIA

PDCI DESIGN. THE BLUE AREAS IN THE LEFT
FIGURE REPRESENT A BIOCOMPATIBLE
(TRANSPARENT), HYDROGEL-BASED,
MATERIAL OF REFRACTIVE INDEX OF 1.458
(SEE “METHODS” SECTION FOR DETAILS).
THE IMAGE ON THE RIGHT IS A SIMULATION
OF THE APPEARANCE OF THE PDCI (IN
STARK CONTRAST) ON A REAL EYE

new pioneering implant to correct
presbyopia has been designed by
A esearchers from the Universitat
r
Politècnica de València (UPV), the
Universitat de València (one of Spain's
leading academic institutions) and the
Aiken Ophthalmology Clinic’s Research
Foundation, following five years of research.
The team’s work has been published in
Nature group’s Scientific Reports journal.
They have created the first trifocal
corneal inlay that is also fully transparent. AMTFS OF PDCI (MAGENTA) AND RCI (BLUE) FOR 3.0 MM
The inlay would allow people with (A), AND 4.5 MM PUPIL (B). DOTTED LINES CORRESPOND
presbyopia good vision of objects located at TO THE AMTFS WITH THE OPTICAL INLAYS DECENTERED
1.0 MM WITH RESPECT TO THE PUPIL CENTER AS
several distances, whether far, intermediate SHOWN IN THE PHASE MAPS SHOWN WITH THE
(as in computers and mobile devices) and CORRESPONDING COLOR FRAMES IN (C) FOR 3.0 MM AND
(D) FOR 4.5 MM PUPIL DIAMETERS
near for reading.

According to Juan Antonio Monsoriu, THE NEW CORNEAL INLAY COULD PROVE
researcher, Centre for Physical Technologies
at the UPV, the inlay could be an alternative TO BE AN ALTERNATIVE FOR THOSE WITH
for those with presbyopia who would PRESBYOPIA WHO WOULD RATHER NOT
rather not use glasses or contact lenses. USE GLASSES OR CONTACT LENSES
“Furthermore, it would be fully compatible

| NOV-DEC 2021 | 96 TECH UPDATE