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Cardiff 5667R Combined Contrast Test
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Cardiff 5667R Combined Contrast Test

  • A visual testing kit designed to determine contrast sensitivity
  • Designed for testing toddlers and young children
  • Suitable for older children/adults with intellectual impairment
  • Kit consists of 36 laminated cards with images

Availability:  

Dispatched in 1-2 days  

Dispatched in 1-2 days

£899.99(Inc. 20% VAT)
(£749.99 Exc. VAT)

Cardiff 5667R Combined Contrast Test

The Cardiff 5667R Combined Contrast Test is designed to test contrast sensitivity in toddlers and young children, as well as older children and adults with intellectual impairment. Like the Cardiff Acuity Test, this test uses vanishing images on cards.

Features and Benefits of the Cardiff 4667R Contrast Test

  • A visual testing kit designed to determine contrast sensitivity
  • Designed for testing toddlers and young children
  • Suitable for older children/adults with intellectual impairment
  • Tests sensitivity levels from 2.17 to 100
  • Kit consists of 36 laminated cards with images

What is a Contrast Sensitivity Test?

Contrast sensitivity is the ability to detect large but faint targets. There are some pathological conditions that reduce contrast sensitivity without impairing visual acuity, and a contrast sensitivity test can help to identify these conditions. This testing kit consists of 36 laminated cards, each with a large, but faint image; the degree of faintness of the images increases across the cards, so that the degree to which the subject can/cannot detect contrast can be determined.

How the Test Works

The test covers 12 contrast levels using three cards at each level. The images, or optotypes, used in the test consist of a light band bordered by two darker bands, with the contrast between these lines varying across the test kit.

Due to the nature of the cards, if the target lies beyond the subject’s contrast limit, it merges with the background, becoming invisible. The examiner notes the movement and direction of the subject's eyes when shown a card to determine whether they can see the image on the card or not.

Sensitivity Levels Tested

The contrast levels tested start at 46% and decrease to 1%, which equates to sensitivity levels from 2.17 to 100. When the Cardiff Contrast Test is carried out at a distance of 50cm the targets represent 1.9 cycles per degree (or 6/90, 20/300) and at a distance of 1m the targets represent 3.8 cyclesper degree (or 6/45, 20/150).

At a distance of 25cm the targets represent 1.0 cycle per degree (or 6/180, 20/600). Results from the test are presented in a manner that is consistent with scoring of the Pelli-Robson Contrast Test for adults.

Delivery - Free UK Mainland Delivery

This item is usually dispatched by 24 hour courier.

This item is usually dispatched the same day for next working day delivery when ordered before 2.00pm, Monday to Friday.

Please call our Health and Care Customer Care Team on 020 7720 2266 if you have any questions about the delivery of this item.

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