What does the evidence say about Blackcurrant Visual Performance Randomized Trial?

Updated June 2026

Quick Answer

Blackcurrant Visual Performance Randomized Trial has evidence relevant to benefits, uncertainty, and practical interpretation, but conclusions should stay close to the cited sources. One representative finding is: This systematic review aimed to evaluate randomized controlled trial (RCT) evidence on the effects of carotenoids, anthocyanins, polyunsaturated fatty acids, and combined nutraceutical formulations on refractive outcomes, axial length, macular pigment optical density (MPOD), visual function, and symptoms of visual fatigue.

Key Takeaways

  • 01This systematic review aimed to evaluate randomized controlled trial (RCT) evidence on the effects of carotenoids, anthocyanins, polyunsaturated fatty acids, and combined nutraceutical formulations on refractive outcomes, axial length, macular pigment optical density (MPOD), visual function, and symptoms of visual fatigue. [Martinez-Perez C (2025)]
  • 02Eligible studies were RCTs involving individuals with myopia or at risk of myopia, comparing nutritional supplementation with placebo or active controls. [Martinez-Perez C (2025)]
  • 03Two reviewers independently screened studies, extracted data, and assessed risk of bias using the Cochrane RoB 2 tool. [Martinez-Perez C (2025)]
  • 04Background/objectives Nutritional supplementation has been proposed as a potential adjunct strategy in myopia prevention and control through antioxidative, anti-inflammatory, and extracellular matrix-regulating mechanisms. [Martinez-Perez C (2025)]
The current Migaku evidence database contains 2 reusable source documents for Blackcurrant Visual Performance Randomized Trial. This answer focuses on benefits, uncertainty, and practical interpretation. - This systematic review aimed to evaluate randomized controlled trial (RCT) evidence on the effects of carotenoids, anthocyanins, polyunsaturated fatty acids, and combined nutraceutical formulations on refractive outcomes, axial length, macular pigment optical density (MPOD), visual function, and symptoms of visual fatigue. [Martinez-Perez C (2025); evidence level 1] - Eligible studies were RCTs involving individuals with myopia or at risk of myopia, comparing nutritional supplementation with placebo or active controls. [Martinez-Perez C (2025); evidence level 1] - Two reviewers independently screened studies, extracted data, and assessed risk of bias using the Cochrane RoB 2 tool. [Martinez-Perez C (2025); evidence level 1] - Background/objectives Nutritional supplementation has been proposed as a potential adjunct strategy in myopia prevention and control through antioxidative, anti-inflammatory, and extracellular matrix-regulating mechanisms. [Martinez-Perez C (2025); evidence level 1] - Slower gastric emptying contributes to improved satiety and a more gradual glucose response following meals. [Ellis Lucy R. (2026); evidence level 2] Evidence levels are sorting aids, not final clinical grades. Level 1 usually indicates systematic-review style evidence, level 2 indicates randomized trials or public-health guidance, and lower levels need more cautious wording. This page is educational. People with medical conditions, pregnancy, medication use, or unusual symptoms should ask a qualified clinician before changing supplements, medication, or treatment routines.

Sources

  1. Nutritional Supplementation for Myopia Prevention and Control: A Systematic Review of Randomized Controlled Trials.
  2. A randomised, double-blind, placebo-controlled trial to assess the postprandial dose-dependent effects of wild blueberries on metabolic and cognitive outcomes following a high-carbohydrate breakfast