Monthly Archives: December 2015

Clinical evaluation of the Quicksee low-cost hand-held autorefractometer, published in OVS




We describe a newly developed Hartmann-Shack autorefractor and demonstrated equivalent performance to the Grand Seiko
autorefractor in matching power vectors measured by subjective refraction. Because the QuickSee can
be produced at low-cost without a sacrifice in accuracy, it is a promising new approach to refraction that
may someday make autorefractors more accessible to resource-constrained eye care providers. The study results from a collaboration between VioBio Lab (CSIC), New England College of Optometry and Massachussets Institute of Technology under the Madrid MIT M+Vision Consortium. Quicksee is being commercialized by Plenoptika, Inc. The paper is published in the current issue of Optometry and Vision Science

Full reference:
Durr, Nicholas J.; Dave, Shivang R.; Vera-Diaz, Fuensanta A.; Lim, Daryl; Dorronsoro, Carlos; Marcos, Susana; Thorn, Frank; Lage, Eduardo. Design and Clinical Evaluation of a Handheld Wavefront Autorefractor, 92 (12), 1140–1147 (2015)

Chromatic aberration of hydrophilic and hydrophobic IOLs, published in JCRS




Using a polychromatic adaptive optics system, we measured psychopysically and objectively the longitudinal chromatic aberration (LCA) in eyes implanted with two IOLs of same design, but different materials (from PhysIOL) in a wide spectral range. Hartmann-Shack based LCA was consistently lower than the psychophysical LCA. Longitudinal chromatic aberrations were smaller with hydrophilic IOLs than with hydrophobic IOLs of the same design. The study was supported by PhysIOL through a collaborative agreement, and counted with the clinical support of members of the Instituto de Oftalmologia Avanzada. The paper is published in the Journal of Cataract and Refrative Surgery.

Full reference:
Maria Vinas, Carlos Dorronsoro, Nuria Garzón, Francisco Poyales, Susana Marcos. In vivo subjective and objective longitudinal chromatic aberration after bilateral implantation of the same design of hydrophobic and hydrophilic intraocular. Journal of Cataract and Refractive Surgery 41 (10), 2115–2124, (2015)

CSIC awards i-Coop Collaborative project to VioBio Lab – LV Prasad Eye Institute



VioBio Lab  (Institute of Optics, CSIC) and LV Prasad Eye Institute (Hyderabad, India) launch a new collaboration, on “Quantification of crystalline and intraocular lens optics”, with  Susana Marcos, Ph.D. and Virender S Sangwan, M.B.B.S., M.S. as principal investigators. The collaboration is funded by CSIC iCoop Program.
L V Prasad Eye Institute (LVPEI) is a highly internationally recognized organization, a not-for-profit, comprehensive eye care institution committed to delivering high-quality treatment and care for patients, embracing all socio-economic backgrounds and dedicated to achieving excellence across  clinical services, education and research in the eye.

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