ArticleScientific reports2021
Effects of cannabis on visual function and self-perceived visual quality.
Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
12 citing papers in PubMed, 24 citations in OpenAlex.
- Influence of Cannabidiol Use on Visual Function and Optical Quality: A Randomized Controlled Trial.Translational vision science & technology · 2025Trial
- Visual function and vehicle driving performance under the effects of cannabidiol: A randomized cross-over experiment.Addiction (Abingdon, England) · 2025Trial
- Motion and form perception in healthy individuals with adolescent cannabis use.Frontiers in psychiatry · 2026Article
- The synthetic cannabinoids menace: a review of health risks and toxicity.European journal of medical research · 2024Review
- Adverse Ocular Impact and Emerging Therapeutic Potential of Cannabis and Cannabinoids: A Narrative Review.Clinical ophthalmology (Auckland, N.Z.) · 2024Review
- Effects of alcohol consumption on driving performance in the presence of interocular differences simulated by filters.Scientific reports · 2023Article
- Green Smoke, Red Flag: Cannabis and the Risk of Orbitopathy and Dermopathy in Thyrotoxicosis.Cureus · 2023Article
- Tonic Endocannabinoid Levels Modulate Retinal Signaling.International journal of environmental research and public health · 2022Article
- Changes in Visual Performance under the Effects of Moderate-High Alcohol Consumption: The Influence of Biological Sex.International journal of environmental research and public health · 2021Article
- Presence of the Endocannabinoid System in the Inferior Pulvinar of the Vervet Monkey.Brain sciences · 2021Article
- Aggressive Driving Behaviours in Cannabis Users. The Influence of Consumer Characteristics.International journal of environmental research and public health · 2021Article
- Cannabis and driving ability.Current opinion in psychology · 2021Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cannabis is one of the most used drugs of abuse in the world. The objective of this study was to analyze the effects of smoking cannabis on vision and to relate these to those perceived by the user. Thirty-one cannabis users participated in this study. Visual function assessment was carried out in a baseline session as well as after smoking cannabis. We evaluated static visual acuity, contrast sensitivity, stereoacuity, accommodative response, straylight, night-vision disturbances (halos) and pupil size. The participants were also divided into two groups depending on whether they perceived their vision to have worsened after smoking cannabis. A logistic regression analysis was employed to identify which visual test could best predict self-perceived visual effects. The study found that smoking cannabis has significant adverse effects on all the visual parameters analyzed (p < 0.05). Self-perceived visual quality results revealed that about two thirds of the sample think that smoking cannabis impairs their vision. Contrast sensitivity, specifically for the spatial frequency 18 cpd, was identified as the only visual parameter significantly associated with self-perceived visual quality (Odds Ratio: 1.135; p = 0.040). Smoking cannabis is associated with negative effects on visual function. Self-perceived visual quality after smoking cannabis could be related to impaired contrast sensitivity.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.