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The effects of 2 types of lutein supplements on macular pigment and visual functions

The effects of 2 types of lutein supplements on macular pigment and visual functions - Macular pigment and visual functions

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000004593
Enrollment
36
Registered
2010-11-22
Start date
2010-11-01
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

Macular degeneration

Interventions

Xanmax 2002 lutein supplement FloraGLO lutein supplement

Sponsors

Seirei Hamamatsu General Hospital (Shizuoka Prefecture)
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: No serious eye diseases Visual acuity of 0.8 and more Myopia of less than -6.0 D No gastrointestinal disorders such as malabsorption syndrome and history of gastrectomy causing absorption deficiency No diabetes mellitus No use of lutein and zeaxanthin supplements Non-smoker or no tobacco smoking within the past 1 year Providing informed consent with sufficient understanding of the present study Judged by the investigator to be eligible as a subject on the basis of screening tests Not allergic to lutein or zeaxanthin

Exclusion criteria

Exclusion criteria: Presence of cataract of a severity sufficient to affect the measurement of macular pigment Pupil size less than 6.5 mm Judged by the investigator to be ineligible for other reasons

Design outcomes

Primary

MeasureTime frame
Macular pigment optical density

Secondary

MeasureTime frame
1.Change in far and near visual acuity 2.Change in contrast sensitivity and glare-recovery testing 3.Change in response of macular electroretinogram 4.Change in plasma lutein concentration

Countries

Japan

Contacts

Public ContactMasahiro Asano

Seirei Hamamatsu General Hospital (Shizuoka Prefecture) General Clinical Research Center

asanoma@sis.seirei.or.jp053-474-2222

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026