Year: 2019

Perceptual and physical limits to temporal multiplexing simulation of multifocal corrections

AUTHORS
Carlos Dorronsoro
Victor Rodriguez-Lopez
Xoana Barcala
Enrique Gambra
Vyas Akondi
Lucie Sawides
Yassine Marrakchi
Eduardo Lage
Wilso S Geisler
Susana Marcos
JOURNAL Investigative Ophthalmology & Visual Science July 2019, Vol.60, 6465 (ARVO 2019)
 

Purpose : Recent simultaneous vision simulators (SimVis) rely on the principle of temporal multiplexing of optotunable lenses (TL): Image components from different foci are superimposed to match the thru-focus optical quality of specific multifocal patterns. If sufficiently fast, the retinal images appear static. The temporal physical and perceptual aspects of temporal multiplexing are experimentally evaluated.

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Objective Refraction with Self-operable, Lightweight autorefractor

Funding Agency Translational Research Institute for Space Health-NASA
Principal Investigator/s Shivang R. Dave
Information Type of Grant: Competitive funding , United states

Grant code: NASA NNX16AO69A

Awardee Organization: Plenoptika Inc

Project Start Date: 29-March-2019

Project End Date: 29-March-2020

Total Funding: $250,000

MEDIC Personnel included in the grant / Role:

Dr. Eduardo Lage / Consultant

MsC Carlos Hernandez / Consultant

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Quality of eyeglass prescriptions from a low-cost wavefront autorefractor evaluated in rural India: results of a 708-participant field study

AUTHORS
Nicholas J Durr
Shivang R Dave
Daryl Lim
Sanil Joseph
Thulasiraj D Ravilla
Eduardo Lage
JOURNAL BMJ open Ophthalmology 2019;4: e000225
ABSTRACT Objective: To assess the quality of eyeglass prescriptions
provided by an affordable wavefront autorefractor operated
by a minimally trained technician in a low-resource setting.
Methods and Analysis 708 participants were recruited
from consecutive patients registered for routine eye
examinations at Aravind Eye Hospital in Madurai, India,
or an affiliated rural satellite vision centre. Visual acuity
(VA) and patient preference were compared between trial
lenses set to two eyeglass prescriptions from (1) a novel
wavefront autorefractor and (2) subjective refraction by an
experienced refractionist.

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Validation of an affordable handheld wavefront autorefractor

AUTHORS
Marcos Rubio
Carlos S. Hernandez
Enrique Seco
Pablo Perez-Merino
Ignacio Casares
Shivang R Dave
Daryl Lim
Nicholas J Durr
Eduardo Lage
JOURNAL Optometry and Vision Science  2019, Vol 96(10), 726-732
ABSTRACT Significance: There is a critical need for tools that increase the accessibility of eye care to address the most common cause of vision impairment:  uncorrected refractive errors. This work assesses the performance of an affordable autorefractor which could help reduce the burden of this healthcare problem in low-resource communities.

Purpose. To validate the commercial version of portable wavefront autorefractor for measuring refractive errors.

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Dr. Lage visits Kenya for screening of school children with the QuickSee


Dr. Lage had the possibility to join a children screening team of Kenya in a 2-day screening campaign performed at 2 sites. The first one was a remote area of the country (Gatagati School, Nakuru) and in a rural area (Tumanini School, Nakuru). Using the QuickSee technology, the team was able to screen >270 patients in in a day and a half of work.

Thanks to Essilor and the Kenya Team for this great experience!!

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eduardo.lage@uam.es
+34 91 497-5787

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