Crowding in children with visual impairment: The effect of a magnifier on near visual acuity

Crowding in children with visual impairment: The effect of a magnifier on near visual acuity - Crowding

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

NL-OMON

Registry ID

NL-OMON35171

Enrollment

240

Registered

2010-04-27

Start date

2010-05-20

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

In november and december 2010 the young, visually impaired children will receive an intervention. This interventions will take course over 6 weeks. Children will be visited at home by a trainer. Dur

Eligibility

Age

2 Years to 11 Years

Inclusion criteria

Inclusion criteria: -age 3.5 to 8 years; -normative developmental level; -intact peripheral visual field; -no earlier experience with visual aids; -birth at term.

Exclusion criteria

Exclusion criteria: -small visual field (retinal dystrophy); -multiple handicaps;

Design outcomes

Primary

Measure	Time frame
The dependent variable is the performance on the crowding task before and after the magnifier training. Also will be looked at the qualitative and qwantitative performance on the magnifier task itself (number of errors that are made and speed). Performance on fine motor skills and eye movement experiments will be investigated.	—

Secondary

Measure	Time frame
Work posture and viewing behavior.	—

Countries

Netherlands

Outcome results

None listed

Source: NL-OMON (via WHO ICTRP)