Results 1 to 10 of about 11,895 (152)

A proposed correction in the weighted method to score the Ishihara test [PDF]

BMC Research Notes, 2019
Objective Ishihara test is a color vision test, whose results consider that all plates of the test have the same weighting. Rodriguez-Carmona et al.
Leticia Miquilini, Mauro Augusto Souza Ratis, Monica Gomes Lima, Natali Valim Oliver Bento-Torres, Eliza Maria da Costa Brito Lacerda, Maria Izabel Tentes Cortes, Anderson Raiol Rodrigues, Luiz Carlos de Lima Silveira, Givago da Silva Souza   +8 more
doaj   +5 more sources

A Comparative Study of the Sensitivity and Specificity of the Ishihara Test With Various Displays [PDF]

International Dental Journal
Visual colour differentiation in clinical research requires colour-competent (CC) participants. The Ishihara colour charts (ICC) have established themselves as the standard for CC screening of colour vision deficiencies (CVD). However, the extent to which the results can be compared with a presentation of the colour charts on a smartphone display (SD ...
Thomas Klinke, Wolfgang Hannak
exaly   +4 more sources

Red tinted contact lenses on Ishihara test error scores in color deficient subjects: a pilot study [PDF]

International Journal of Ophthalmology
AIM: To compare the Ishihara test errors scores of colour vision deficiency (CVD) subjects when wearing four different types of red-tinted contact lenses (RCL) that differ in their transmittance as determined using a spectrophotometer.
Haliza Abdul Mutalib, Sharanjeet Sharanjeet-Kaur, Ong Yi Lin, Bashirah Ishak, Mohd Norhafizun Bin Mohd Saman, Mohd Izzuddin Hairol   +5 more
doaj   +2 more sources

Aging variations in Ishihara test plates

Color Research and Application, 2023
AbstractThe Ishihara test plates are designed to offer a rapid and usable instrument to diagnose color deficiency. The original test, as well as other pseudo‐isochromatic plates (PIP), is composed of physical charts produced following proprietary and standard printing procedures.
Alessandro Rizzi, Alice Plutino, Luca Armellin   +2 more
exaly   +3 more sources

Colour perception screening and shade-matching performance among undergraduate dental students: an exploratory observational study [PDF]

BDJ Open
Background Visual shade selection remains widely used in restorative and prosthetic dentistry and is influenced by interobserver variability, illumination conditions, and individual visual factors.
Sergi Torné-Durán
doaj   +2 more sources

Colorimetric evaluation of iPhone apps for colour vision tests based on the Ishihara test [PDF]

Australasian journal of optometry, The, 2016
Given the versatility of smart phone displays, it was inevitable that applications (apps) providing colour vision testing would appear as an option. In this study, the colorimetric characteristics of five available iPhone apps for colour vision testing are assessed as a prequel to possible clinical evaluation.
Stephen Dain
exaly   +3 more sources

The new Richmond HRR pseudoisochromatic test for colour vision is better than the Ishihara test [PDF]

Australasian journal of optometry, The, 2006
The Hardy-Rand-Rittler (HRR) pseudoisochromatic test for colour vision is highly regarded but has long been out of print. Richmond Products produced a new edition in 2002 that has been re-engineered to rectify shortcomings of the original test. This study is a validation trial of the new test using a larger sample and different criteria of evaluation ...
Carol Lakkis, Barry L Cole
exaly   +3 more sources

Prevalence of color vision deficiency among Saudi dentists and its effect on shade selection: a cross-sectional study [PDF]

Frontiers in Dental Medicine
BackgroundAccurate shade selection is essential for aesthetic dental restorations and relies on the clinician's color perception. Color vision deficiency (CVD) may impair this ability, yet data on its prevalence and clinical impact among dentists in ...
Mai Almarzouki, Lama Abdullah Khateri, Nada J. Farsi, Mohammed K. Yousef   +3 more
doaj   +2 more sources

Comparing the validity of an online Ishihara colour vision test to the traditional Ishihara handbook in a South African university population

African Vision and Eye Health, 2018
Background: Colour vision tests are becoming increasingly available on online platforms to the ordinary internet user. Limited research has been conducted to establish the validity of these tests for use as screening tools for colour deficiency. Aim: To
Diane van Staden, Fatima Noor Mahomed, Sershni Govender, Lunga Lengisi, Benita Singh, Osman Aboobaker   +5 more
doaj   +3 more sources

Evaluasi Pemeriksaan Tes Buta Warna Menggunakan Metode Ishihara Berbasis Google Form Menggunakan Buku Ishihara

Indonesian Journal of Pharmaceutical Education, 2022
This article background about the availability of ishihara book is very rare in rural areas because of its quite expensive price. Therefore, in this current research, the researcher uses the Google Form-based  ishihara book method which is relatively new
Syahril Saini, Elvie Febriani Dungga, Ita Sulistiani   +2 more
doaj   +1 more source