AboutMitchell Axelrod Expertise I'm happy to answer questions about eye exam findings and procedures, glasses and contact lens types/prescriptions/problems. I can also answer questions about general eye conditions/diseases.
I do not answer questions concerning surgical techniques/procedures.
Please state your age or within a small range when asking questions, as it is often important.
Experience Optometrist 19 yrs.
Education/Credentials Doctor of Optometry, cum laude; Residency in Ocular Disease
Expert: Mitchell Axelrod Date: 7/4/2008 Subject: Do human visual and colour receptor work differently? do human have the same visual experience?
Question QUESTION: Hi, I got question on human vision
-Does Human have the same colour vision receptor? Do they work differently in each human?
-Is it possible that we may perceive the same colour?
-How about size? Texture? Distance? Human look? Do we has totally different perception as each other? Mean we have different perception of this world??
-Is it possible that we may perceive them similarly? For e.g. when I point to a circle…does he saw a circle? Or something else?
-And Human seem to show attract in certain beautiful thing, for example, most man are attract to the certain beautiful girl. Why will some human seem to like the the same thing?
-Is it possible for human to share the same visual experience? Do we have the same visual receptor?
Is it possible to prove that?
ANSWER: Hi Rambo.
You ask some interesting questions. I would say that as far as color vision goes, we are all physically the same except for those with color vision defects. In those cases, there are differences in the wiring and/or chemicals as far as the photoreceptors and their connections.
Otherwise, the answers to your questions are more psychological or philosophical. The question of "do you see what I see" is the area of interest called visual psychology or visual perception. At least we understand to "agree to call blue things blue,even if we can't prove it is the same for both of us." The Internet is full of stuff for you to read. Optical illusions are evidence of reality vs. perception differences, and they aren't perceived the same for all.
As far as beauty is concerned, it is in the eyes of the beholder. While certain features such as widely set eyes and smooth, symmetrical features are described, it is not something I am knowledgeable about.
I hope that gives you a few things to consider and terms to google. Thanks for asking.
Mitch Axelrod, O.D.
---------- FOLLOW-UP ----------
QUESTION: HI,
- How can I prove that my visual receptor is working normally like other people?
-Can we ever find out how other people vision look like?
-Is it possible for us, human to perceive the same sharpness and contrast in vision? Normal vision enables us to see in High definition right? I personally see in High definition, am I normal?
-how can prove that human have the same visual experience?
thanks
Answer Hi again Rambo.
There are the 'visual acuity' measurements taken at typical eye exams. There are tests for congenital color vision defects there also. Beyond that, you start into the realm of advanced tests. They are 'visual field' testing and 'electro-diagnostic' testing called 'electro-oculogram' and 'VEP' visually evoked potential, and also advanced color vision tests. These are more akin to brain activity tests like EEG where the electrical activity of the eye itself as well as the signals passing through the brain are monitored and compared to 'standards'. There are also 'contrast sensitivity' tests, dark adaptation tests, etc. There are 'flicker-fusion' tests and many more. Much is understood about the function of the eye, brain, perceptual abilities as well as limitations.
As I mentioned, you should investigate visual perception and psychology and read about it. As doctors we all learn about those things, but forget most of it because it is not part of our routine practice.
As far as high def, I'm not sure that there is a 'winner', as each has abilities less than and more than the other depending on the specific measurement. What is often interesting is to ponder how other animals and insects see, especially those that can see outside of our restricted range of color. Seeing into the ultraviolet must be fabulous, or into the infrared like night vision. We can only imagine and make up pseudo demonstrations. Your interesting questions can also be asked of psychology experts.
Thanks ,
Mitch Axelrod, O.D.
