Skip to content

Age-related macular degeneration Meso-zeaxanthin Ocular Supplementation trial (AMOST)

Comparison of macular and serum responses after supplementation with two different macular carotenoid formulations

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN81595685
Enrollment
50
Registered
2009-08-27
Start date
2009-03-01
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 Other retinal disorders

Interventions

Group 1: MZ 10 mg
L 10 mg
Z 2 mg (intervention group 1) Group 2: 10 mg L plus an additional contamination of circa 1 mg Z (intervention group 2) The treatment will be 12 months in duration and visits for the trial will be bas

Sponsors

Howard Foundations Holdings Limited (UK)
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Male or female, aged 50 years and above 2. Early stage AMD in at least one eye 3. No additional ocular pathology to AMD

Exclusion criteria

Exclusion criteria: 1. Cigarette smokers 2. Currently taking dietary supplements and/or had been taking dietary supplements over the previous three months prior to their baseline study visit 3. Diabetics (HbA1c above 6.5%)

Design outcomes

Primary

MeasureTime frame
Measured at baseline, three months, six months and twelve months: 1. Morphological changes in AMD, with respect to baseline and between groups 1 and 2 over the study period 2. MP optical density (including its entire spatial profile), as measured by heterochromatic flicker photometry (HFP) 3. Comparison of MP optical density response between groups 1 and 2 over the study period

Secondary

MeasureTime frame
Measured at baseline, three months, six months and twelve months: 1. Serum MZ, L and Z concentrations as measured by high-performance liquid chromatography (HPLC) 2. Comparison of serum carotenoid response between groups 1 and 2 over the study period 3. Assessment of retinal sensitivity using microperimetry

Countries

Ireland

Outcome results

None listed

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