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Related Experiment Videos

New paediatric contrast test: Hiding Heidi low-contrast 'face' test.

Ai Hong Chen1, Diana Mohamed

  • 1Department of Optometry, National University of Malaysia, Kuala Lumpur, Malaysia. aihong@medic.ukm.my

Clinical & Experimental Ophthalmology
|October 1, 2003
PubMed
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The Hiding Heidi (HH) test shows good repeatability for assessing low-contrast vision. While correlated with other tests, it yields significantly different results, suggesting a unique role in clinical contrast sensitivity assessment.

Area of Science:

  • Ophthalmology
  • Vision Science
  • Pediatric Optometry

Background:

  • The Hiding Heidi low-contrast 'face' test (HH) is a novel pediatric tool for evaluating low-contrast object detection.
  • Assessing contrast sensitivity is crucial for visual function evaluation.

Purpose of the Study:

  • To compare the Hiding Heidi low-contrast 'face' test (HH) with established contrast sensitivity tests: Pelli-Robson (PR) and Functional Acuity Contrast Test (FACT).
  • To evaluate the clinical utility and performance of the HH test in low-contrast assessment.

Main Methods:

  • Thirty university students underwent contrast ability evaluation using HH, PR, and FACT.
  • The HH test was administered twice to assess its repeatability.

Main Results:

Related Experiment Videos

  • Significant positive correlations were found between HH and PR (r=0.65), and HH and FACT across various cycles per degree (1.5 c.p.d.: r=0.56; 3 c.p.d.: r=0.91; 6 c.p.d.: r=0.64).
  • Paired t-tests revealed significant differences between HH and PR (t=-6.05), and HH and FACT at all tested c.p.d. (1.5: t=-5.64; 3: t=-8.35; 6: t=-11.16).
  • The HH test demonstrated high repeatability and good agreement with other measures, despite significant differences in readings.

Conclusions:

  • The Hiding Heidi test correlates with Pelli-Robson and Functional Acuity Contrast Test but provides distinct readings.
  • The study discusses the unique features and clinical role of the HH test in contrast sensitivity assessment.