A randomised controlled trial of the effectiveness of prism spectacles in reducing the disability of patients with age-related macular degeneration (ARMD)

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN00821605

Enrollment

225

Registered

2002-09-12

Start date

2001-02-01

Completion date

Unknown

Last updated

2015-01-13

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

Conditions

Age-related macular degeneration Eye Diseases Age-related macular degeneration

Interventions

1. Prism spectacles prescribed to established protocol 2. Prism spectacles with prism of standard value 3. Placebo spectacles made to appear like prism spectacles

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Bilateral ARMD 2. Visual Acuity (VA) 6/18 to 1/60 binocularly 3. Clinically stable (by visual acuity) with bilateral central scotoma 4. Reporting difficulty with everyday tasks

Exclusion criteria

Exclusion criteria: Not provided at time of registration

Design outcomes

Secondary

Measure	Time frame
Not provided at time of registration	—

Primary

Measure	Time frame
Not provided at time of registration	—

Countries

United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026