Cardiff 4740R Standard Acuity Test
The Cardiff 4740R Standard Acuity Test has been designed specifically to evaluate the visual acuity of children in the difficult-to-test age group of six months to three years. The test uses familiar pictures and is presented as a game in order to attract and retain the attention of the patient. Due to its simple nature and the use of observation techniques rather than direct communication to carry out the evaluation, this testing method can also be used to assess visual acuity in older children and adults with intellectual difficulties.
Features and Benefits of the Cardiff 4740R Standard Acuity Test
- Acuity testing kit for children ages six months to three years
- Can be used to test adults with intellectual difficulties
- Uses Preferential Looking rather than recognition
- Testing range of 20/12.5 to 20/160
- Consists of 36 test cards in a handy carry case
- Includes full instruction on how to administer the test
Preferential Looking Technique
The Cardiff 4740R Test makes use of a set of graded test cards with vanishing optotypes. Helpfully, the Cardiff Acuity Test doesn't require the patient to be able to name or even to recognise the optotypes on the test cards in order for the test to be completed. Instead, the Cardiff Acuity Test relies on the technique of Preferential Looking, where the examiner simply notes the patient’s eye movements when shown a card in order to determine whether he or she can see the image. This means that the Cardiff Acuity Test can be used irrespective of the patient's developmental stage, making it ideal for testing toddlers and preschoolers, as well as older children and adults with intellectual difficulties.
More About the Cardiff 4740R Standard Acuity Test
The Cardiff Acuity Test was developed by Dr. J. Margaret Woodhouse at the School of Optometry and Vision Sciences, Cardiff University in the UK. This acuity test has been rigorously validated and is now recommended by leading paediatric vision consultants worldwide. When administered by an experienced examiner, an accurate test can be carried out in just 3 - 5 minutes.
The 4740R Standard Acuity Test consists of 36 cards, with vanishing optotypes covering an acuity range of 20/12.5 to 20/160. The testing kit includes a full instruction manual with details on how to administer the test successfully, and the entire kit comes packaged in a handy carry case.
