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Visual Acuity

Research analysis led by .
Reviewed by
Examine.com Team
Last Updated:

Introducing Evidence-based Keto: Your no-hype guide to the ketogenic diet

We've spent the past year analyzing the research on the keto diet, and have just released Evidence-based Keto.

Clocking in at over 200 pages with 500+ references, it's the unbiased guide you need to the ketogenic diet.

Summary of Visual Acuity

Primary Information, Benefits, Effects, and Important Facts

Scientific Information on Visual Acuity

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Unbiased truth on keto and long-term effects on health, safety, pre-existing conditions, losing weight, and more.

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Human Effect Matrix

The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect visual acuity
Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Outcome Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
grade-c Minor - See study
Improvements have been noted in the visual field in persons with normal tension glaucoma, which is characterized by damage to this parameter. It is uncertain whether ginkgo increases visual acuity in otherwise healthy persons.
grade-c Minor Very High See 2 studies
Supplementation of saffron appears to increase visual acuity in persons with age-related macular degeneration.
grade-c - - See study
No significant influence on visual acuity has been noted with caffeine on hand-eye or target-based visual tasks

To view this information, please see the ​Examine.com membership.

The evidence for each separate supplement is still freely available ​here.

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Everything you need to know about the keto diet

When we asked our users what they wanted us to cover, many of them mentioned the keto diet.

So we listened. We spent the year looking up the research on the ketogenic diet to help guide you in your journey.

With Evidence-based Keto, Examine.com gives you all the scientific research, but in understandable language with tons of informative infographics. No opinion, no bias, no conflict of interest.

If you’re interested in keto, this is a must-have unbiased source.