GrrlScientist ⧖ Ⓥ SciComm 🇺🇦Aug 19, 2025

Wild Fish Recognize Individual Humans Who Feed Them

"Yes, people really do underestimate the cognitive abilities of fish."

#SciComm by @grrlscientist

#fish #WildFish #cognition #intelligence #Vision #VisualAcuity #behavior #evolution https://medium.com/grrlscientist/wild-fish-recognize-individual-humans-who-feed-them-4762c0fcf4e5

GrrlScientist ⧖ Ⓥ 🇺🇦Aug 19, 2025

Wild Fish Recognize Individual Humans Who Feed Them

"Yes, people really do underestimate the cognitive abilities of fish."

#SciComm by @GrrlScientist

#fish #WildFish #cognition #intelligence #Vision #VisualAcuity #behavior #evolution https://medium.com/grrlscientist/wild-fish-recognize-individual-humans-who-feed-them-4762c0fcf4e5

GrrlScientist ⧖ Ⓥ Aug 19, 2025

Wild Fish Recognize Individual Humans Who Feed Them

"Yes, people really do underestimate the cognitive abilities of fish."

#SciComm by @GrrlScientist

#fish #WildFish #cognition #intelligence #Vision #VisualAcuity #behavior #evolution https://medium.com/grrlscientist/wild-fish-recognize-individual-humans-who-feed-them-4762c0fcf4e5

GrrlScientist ⧖ Ⓥ 🇺🇦Aug 18, 2025

Wild Fish Recognize Individual Humans Who Feed Them

"Yes, people really do underestimate the cognitive abilities of fish."

#SciComm by @grrlscientist

#fish #WildFish #cognition #intelligence #Vision #VisualAcuity #behavior #evolution https://medium.com/grrlscientist/wild-fish-recognize-individual-humans-who-feed-them-4762c0fcf4e5

Dr Priya Sammani ( MBBS ,DFM )Jul 12, 2025

You know, I often get asked, "Doc, I just had my eyes checked, and they said I have 20/20 vision. Does that mean my eyes are perfect?" It's a great question, and the answer is... #20/20vision #eyeexam #eyehealth #eyeglasses #refractiveerrors #Snellenchart #visualacuity

https://priya.health/2020-vision/

Unlocking 20/20 Vision Clarity

Understand what 20/20 vision means, how it's measured, and why it's important. Learn about common causes for less than 20/20 vision and available treatments.

Health With Priya
Victoria Stuart 🇨🇦 🏳️‍⚧️Jan 29, 2025

People w. schizophrenia: Altered ability to visually perceive contrast
https://www.sciencedaily.com/releases/2025/01/250128123926.htm
https://en.wikipedia.org/wiki/Schizophrenia

* affects ~1% world's pop.
* researchers ident. deficit in contrast perception in people w. schizophrenia
* impaired ability to see diff. in light intensity btw. adj. areas
* allows us to ident. shapes, textures, details in our environment

Systematic Review/Meta-Analysis: Contrast Sensitivity in Schizophrenia
https://academic.oup.com/schizophreniabulletin/advance-article/doi/10.1093/schbul/sbae194/7906771

#MentalHealth #schizophrenia #VisualAcuity

People with schizophrenia have an altered ability to visually perceive contrast

Schizophrenia is a serious mental disorder that affects around 1% of the world's population. Researchers have identified a deficit in contrast perception in people with schizophrenia. According to a review of more than 600 studies, these patients have an impaired ability to see differences in light intensity between adjacent areas, which allows us to identify shapes, textures and details in the environment.

ScienceDaily
Tech ChilliMar 28, 2024

Optical Illusion – Only highly attentive readers can spot the giraffe in 11 seconds!

See here - https://techchilli.com/puzzles/optical-illusion-only-highly-attentive-readers-can-spot-the-giraffe-in-11-seconds/

#OpticalIllusionChallenge #SpotTheGiraffe #VisualAcuity #BrainTeaser

Optical Illusion – Only highly attentive readers can spot the giraffe in 11 seconds! 

Optical Illusion - There is a giraffe hiding in plain sight among other animals. Only highly attentive readers can spot the giraffe in 11 seconds. Go ahead and test your visual skills now!

Tech Chill
Michael BachMay 9, 2023
The Freiburg Vision Test FrACT₁₀ https://michaelbach.de/fract/ has learned something new: Assessment of grating contrast thresholds. You select spatial frequency and patch diameter (in Settings>Contrast), and it will hone in on the threshold. An approximate Gaussian window smoothes the grating edge. Error diffusion allows for accurate threshold in spite of 8 bit limits. Downloadable as WebApp. For giggles try 'Autorun to target contrast'.
#vision #visionscience #acuity #psychophysics #visualacuity
FrACT – Homepage

Homepage of the Freiburg Vision Test. Assess visual acuity, contrast sensitivity, Vernier resolution. Measures decimal, LogMAR and Snellen acuity. Tests include Landolt Cs, Sloan letters, tumbling E and more.