Perceptual learning to reduce crowding in visually impaired children: 'Learning to see the forest ánd the trees'

Completed

• Conditions: 10010463; visual impairment

• Registration Number: NL-OMON40727
• Lead Sponsor: niversitair Medisch Centrum Sint Radboud

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Last Update Posted: 11 June 2024

Recruitment & Eligibility

• Status: Completed
• Sex: Not specified
• Target Recruitment: 80

Inclusion Criteria

-Age 6-10 years:
-Normal birth weight;
-Birth at term;
-No perinatal complications;
-Normal development;
-No motor or intellectual impairments.

Exclusion Criteria

-motor or mental impairment;
-children with normal vision: distance visual acuity <20/25 or 0.80.
-children with visual impairment: distance visual acuity <20/400 or >20/40
-dyslexia.

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
<p>The main study parameter is the crowding ratio. This variable has our main<br /><br>interest, because it is known that crowding imposes a fundamental limit on<br /><br>reading, visual search and object recognition. </p><br>

Secondary Outcome Measures

Name	Time	Method
<p>Secondary study parameters are visual acuity (sensory component), fixation<br /><br>stability (motor component), saccade execution (motor component), and reading<br /><br>performance (cognitive aspect). </p><br>