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

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

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

NL-OMON

Registry ID

NL-OMON40727

Enrollment

Registered

2014-12-04

Start date

2015-02-02

Completion date

Unknown

Last updated

2024-06-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

visual impairment

Interventions

Children with visual impairment will be divided in two groups: (i) an experimental group (n=30), and (ii) a control group (n=30). The groups will be trained during 5 weeks, with 2 training sessions

Eligibility

Age

2 Years to 11 Years

Inclusion criteria

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

Exclusion criteria

Exclusion criteria: -motor or mental impairment; -children with normal vision: distance visual acuity 20/40 -dyslexia.

Design outcomes

Primary

Measure	Time frame
The main study parameter is the crowding ratio. This variable has our main interest, because it is known that crowding imposes a fundamental limit on reading, visual search and object recognition.	—

Secondary

Measure	Time frame
Secondary study parameters are visual acuity (sensory component), fixation stability (motor component), saccade execution (motor component), and reading performance (cognitive aspect).	—

Countries

Netherlands

Outcome results

None listed

Source: NL-OMON (via WHO ICTRP)