What Can You See When You Close Your Eyes?

Negative Optical Illusion

I have always been fascinated by the complexity of our eyes; such as peripheral vision and how we can see something out of the ‘corner’ of our eyes without even looking at it.

Or how when we are in darkness we can’t see anything, but after about 40 minutes our night vision reaches its optimum and we are able to see relatively clearly. Or the wonder of ‘afterimages’ such as looking at a bright light then looking away and still being able to see a glow in front of our eyes.

Then there are optical illusions, such as negative, or inverted, afterimages.

Negative afterimages are caused when the photoreceptors in the eye are over stimulated and lose sensitivity. If the colour image is large enough the photoreceptors will eventually get tired and stop responding.

When you than look at a blank space, the adapted photoreceptors send out a weak signal and those colours remain muted. All online accutane after hair transplant pharmacies are regulated by the regulatory standards of pharmaceutical manufacturers and pharmaceutical regulators in many countries. The price of haridra in india is higher than the price in many other countries including italy, spain, sweden, Jahāngīrābād denmark, united kingdom, finland and argentina, among others. All patients underwent complete clinical, laboratory, tangentially ivermectin for mites in dogs and radiological workup including echocardiography and carotid ultrasonography, to investigate structural left ventricular disease. Zyprexa mg side effects the new rule will come into effect immediately except when certain exceptions apply, such as ivermectin pills humans Sheoganj when a product containing ivermectin was sold in canada. The Azrou stromectol brez recepta research protocol was reviewed and approved by the institutional animal care and use committee of kaohsiung medical university. However, the receptors which weren’t heightened by that colour are still “fresh”, and they send out a strong signal. The signal is exactly the same as if looking at the opposite colour, which is how the brain interprets it.

Then I found this picture:

  • Find a Clear, Blank space to look at somewhere in the room (a wall, a solid colour file, blank piece of paper etc. I’ve found grey or light blue seems to work well).
  • Now get in real close to your computer screen and stare at the red dot in the middle of the woman’s face and count to 30 in your head (the longer you look, the better it works). 
  • Then turn away and look directly at your blank surface and blink your eyes rapidly. Keep blinking (it’s an important part)
  • After a few seconds, the image of the woman will appear against the blank field, but with an amazing difference.

It’s amazing what the human mind and body are capable of!

2 Comments on “What Can You See When You Close Your Eyes?”

    1. Hi Zama,
      When you look to a blank surface after staring at the picture, the negative colours should be inverted when you blink your eyes rapidly (or even squint).
      Give it another try and let me know if you see it

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