Effects of Ginkgo (Gingko Biloba) on Retinal and Choroidal Ocular Tissue

  • End date
    Dec 25, 2023
  • participants needed
  • sponsor
    State University of New York College of Optometry
Updated on 25 March 2021


The purpose of this study is to understand the effect of Ginkgo Biloba oral supplements on retinal and choroidal ocular tissue.


The study objectives are to:

  1. assess the changes from pre- to post- oral supplementation on retinal and choroidal thickness and blood flow, retinal oxygen saturation, ocular perfusion pressure, and retinal function

Condition healthy
Treatment Gingko Biloba, Gingko Biloba
Clinical Study IdentifierNCT04448535
SponsorState University of New York College of Optometry
Last Modified on25 March 2021


Yes No Not Sure

Inclusion Criteria

Aged between 20 - 55 years, inclusive
Good general and ocular health
Corrected visual acuity of 20/40 or better
No gingko biloba supplementation within the last 3 months

Exclusion Criteria

All significant ocular and any systemic disorders considered likely to affect the systemic or ocular vasculature
History of ocular surgery, including refractive surgery
Use of ocular medications
Conditions where ginkgo supplementation is contraindicated
Any eye or systemic disease that affect vision or refractive error
Current smokers
Subjects who are pregnant, breastfeeding, or planning conception
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How to participate?

Step 1 Connect with a study center
What happens next?
  • You can expect the study team to contact you via email or phone in the next few days.
  • Sign up as volunteer  to help accelerate the development of new treatments and to get notified about similar trials.

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Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

Learn more

If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

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Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

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