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A new contrast sensitivity test for young children‐‐The Cardiff Contrast Test
Author(s) -
Barbareza Rahim,
Woodhouse Margaret,
Oduwaiye Kola
Publication year - 1997
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1046/j.1475-1313.1997.97807533.x
Subject(s) - contrast (vision) , test (biology) , sensitivity (control systems) , vision test , audiology , optometry , set (abstract data type) , psychology , visual acuity , medicine , ophthalmology , optics , computer science , physics , engineering , biology , paleontology , electronic engineering , programming language
We have developed a new contrast sensitivity (CS) test (similar in design to the Cardiff Acuity test) for use with children aged from 1‐3 years. It consists of a set of 42 multi‐orientational pictures all of one target size (car, boat, fish, house, train and duck) at 14 contrast levels (3 cards at each level). Results from tests performed on 23 adults (aged from 15–44 years) gave contrast sensitivity measurements in agreement with measurements made using the Pelli‐Robson Letter Chart. We tested 138 visually normal children (between 12–66 months) monocularly and binocularly to establish norms. The results from the children indicate that CS increases up to approximately 2 years of age after which it attains adult values. These results suggest that the Cardiff Contrast Test provides an effective measurement technique for the determination of contrast sensitivity in infants.