Lighthouse ETDRS Charts provide normative and comparison data for children in Retinopathy study of Prematurity.
Subjects were tested monocularly using Lighthouse Early Treatment and Diabetic Retinopathy Study distance and near ETDRS visual acuity charts and Pelli-Robson contrast sensitivity charts, with refractive error corrected according to Cryotherapy for Retinopathy of Prematurity study criteria. In this study, results for distance visual acuity, near visual acuity, and contrast sensitivity indicated higher values for the eye tested first than for the eye tested second.
Precision Vision is committed to making a difference to University Professors & Students in Vision Related Studies.
Precision Vision is consistently chosen to work with the leading authorities and researchers engaged in advancing eye care in the vision testing industry. Precision Vision was contacted by the NEI and New York Lighthouse, a division of Lighthouse International, to develop the first commercially viable trans-illumination cabinets and charts, we gladly accepted the challenge. Today, our ETDRS Illuminator cabinet™ and Charts are used worldwide in research facilities, clinical trials and eye care practitioners’ offices. Our business is – and will continue to be – producing the highest quality vision testing tools with unparalleled customer support. Precision Vision prides itself in being the de-facto standard in vision testing products to which all others are compared. Click below to browse through the world-wide Precision Vision exclusive manufactured gold standard Lighthouse products.
BEHIND THE TESTS
The Lighthouse for the Blind, Inc. is a private, not-for-profit social enterprise providing employment, support, and training opportunities for people who are blind, DeafBlind, and blind with other disabilities. The Lighthouse for the Blind, Inc. traces its roots back to 1910 and the formation of a social club called Seattle Association of the Blind. The organization incorporated in 1918, focusing on creating employment opportunities for people who are blind in the Seattle area.
Click below to browse through the world-wide Precision Vision exclusive manufactured gold standard Lighthouse products
Each issue we will take a look at some of the most frequently asked questions that we receive and feature a Q & A below!
Q: What is the difference between Original ETDRS Charts and the Lighthouse ETDRS Charts?
A: There are no clinical or research based differences in Original ETDRS Charts and the edition of Lighthouse ETDRS Charts. There are a few subtle differences in charts in the form of reference lines along the lower acuity lines as well as a table in the footer of the chart for conversion to Snellen equivalent.