We can’t see the real black(feat. Things you see when you close your eyes)
- 비문증, 날파리가 떠다니는 미친 증상.
- 비문증 루테인!? 안과의사는 이것을 먹습니다.
- 비문증 치료 – 레이저로 가능하다? 비문증이 심한 분만 보세요
- 비문증 영양제, 효과가 있을까?
- 브로멜라인 영양제 한 달 복용 후기 – 비문증에 효과는?
- 후유리체 박리 그리고 비문증 – 이해하기 쉽게 알려드릴게요~
- 비문증 치료 – 안약으로 가능할까?
- 비문증 치료, 금(gold)를 이용한다?(1편) – 안과 논문 리뷰
- 금 나노입자를 이용한 비문증 치료(2편) – 안과 논문 리뷰
- 나노입자를 이용한 비문증 레이저 치료(3편) – 안과 논문 리뷰
- 비문증 수술, 유리체 절제술이 얼마나 위험하길래?
- 무심코 방치했다간 실명할 수 있는 망막 열공(a.k.a 망막 구멍)
- 실제 검은색은 인간이 볼 수 없다(feat. 눈 감으면 보이는 것들)
- 망막 열공이 박리로 이어질 확률(feat. 망막 열공 레이저)
- We can’t see the real black(feat. Things you see when you close your eyes)
- 비문증 영양제 두 번째 논문(feat. vitrocap)
“Things you see when you close your eyes”
Hello. This is Dr. Song, your ophthalmologist.
What do you think about darkest color you can see
Of course you would have thought that is black.
It’s dark black with no light at all .
But paradoxically, You need light to see black
And the darkest color is closer to gray like picture than black.
More precisely, this gray with noise This is it.
(You can also watch the video on my YouTube channel below)
What is black?
Let’s see how we can perceive darkness
Look around and If you see a black object, close your eyes while staringthat thing.
You can also completely block the light by covering your eyes with your hand.
Now in front of you, gray background that looks like something other than black will be seen
Now open your eyes and look at the black object again.
Uhm..? Black objects appear darkerthan when you block the light with your eyes closed.
Light perception process
How can we feel the light?
When light came into the eye, photoreceptor cells stimulated by light particles and electrical signalsare created
We can recognize the existence of lightby interpretation of that signal with our brain
But these photoreceptors produce tiny electrical signals even in the absence of light. It’s a fake signal.
The brain also interprets these signals as light, so we can see tiny tiny bits of light even in darkness without light.
The combine of fake signals from over 100 million photoreceptor cells give us this noisy gray instead of a complete black.
When you close your eyes to sleep, you can see such a light,
and unsual pattern. right?
This, too, is due to a fake signal from the photoreceptor itself.
How we can see blak?
But how can we see the black color that can be easily seen around us?
Because, in the process of recognizing the degree of lightness and darkness, contrast with the surroundings is more important than real brightness
Have you ever seen a dark night sky with no moon and no stars?
The actual night sky may look black, but it is closer to indigo blue.
Because there are twinkling stars, relatively we creates complete darkness in our brain that we can’t actually see.
Thank you for reading this long post.
Please use thecommunityfor questions.
A good article to read together
Entoptic phenomenom (bluefield entoptic phenomenom, photopsia, etc.) – Why is it only visible to me?
What is the light you see when you close your eyes? (Closed-Eye Hallucination)