Naked Science Forum
Life Sciences => Physiology & Medicine => Topic started by: 00crashtest on 17/06/2018 02:33:07
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I am an Asian who has no idea how much of their nose Caucasians (especially for those with extremely deep-set eyes, very prominent and low brow ridges, and high noses like Brian Shimansky or Rishi Idnani) can see. I also wonder if they are distracted by their nose.
Also, what are their visual fields (nasal, upward, and downward) in degrees?
These articles have made me think of this question:
www(dot)quora(dot)com/Not-to-be-racist-but-why-do-Asians-have-smaller-eyes-and-does-it-affect-their-vision (comment of 3rd answer by Dale Thomas: "I did always want to ask. Do Caucasian men see their eyebrows and forehead? Is there any impact on vision?")
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This is something that I haven't thought about before. I feel fairly qualified to answer as I, admittedly, have a pretty big nose. I can definitely see both sides of it when I try to, including the nostrils and the bridge. I can also see the curve where it blends into the brow ridge and I can see my eyebrows as well. However, doing that requires effort and these aren't things that I see when I'm looking around under most circumstances. I've never thought about it limiting my field of vision.
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This is something that I haven't thought about before. I feel fairly qualified to answer as I, admittedly, have a pretty big nose. I can definitely see both sides of it when I try to, including the nostrils and the bridge. I can also see the curve where it blends into the brow ridge and I can see my eyebrows as well. However, doing that requires effort and these aren't things that I see when I'm looking around under most circumstances. I've never thought about it limiting my field of vision.
Do you see only the eyebrows or also the horizontal skin below the eyebrows (bottom of brow ridge/top of eye socket)?
Also, if your nose is shined on, such as by sunlight or overhead halogen lights, does it become more noticeable? A distraction?
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Caucasian here, with aquiline nose and deepset eyes. And I see quite a bit of my nose. My opthalmologist has one of those machines that flashes red dots at random to test peripheral vision, and worried when the lower/medial field of vision turned up blind. I commented to him "That's my nose in the way." And he thought a minute, and agreed. Usually, of course, I'm unaware of it, as we all are of the foveal blind spot. But when I was developing a cataract and the lens froze into extreme-closeup mode, I became aware that I was truly seeing the hairs and pores on the skin of my nose.
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Do you see only the eyebrows or also the horizontal skin below the eyebrows (bottom of brow ridge/top of eye socket)?
I can see the skin, but it's all blurry because of how close it is to my eyes.
Also, if your nose is shined on, such as by sunlight or overhead halogen lights, does it become more noticeable? A distraction?
I guess it might become more noticeable, but I wouldn't consider it a distraction.
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Do you see only the eyebrows or also the horizontal skin below the eyebrows (bottom of brow ridge/top of eye socket)?
I can see the skin, but it's all blurry because of how close it is to my eyes.
Also, if your nose is shined on, such as by sunlight or overhead halogen lights, does it become more noticeable? A distraction?
I guess it might become more noticeable, but I wouldn't consider it a distraction.
Since you can see the curve of the bridge of your nose where it blends into the eyebrows (not just seeing the tip of nose) and also the skin below/behind the eyebrows, it sounds like you have very prominent features and deep set eyes. How much of your downwards FOV does your cheeks take up? If your close one eye, how much are your 1) nasal and 2) upwards FOV? With both eyes open, how wide is your binocular FOV (excluding side monocular FOV)? Is your face as extreme as the topic photo? I wonder how prominent your 1) nose tip, 2) nose bridge, and 3) brow ridge are. Perhaps you can attach a photo of your face taken at an angle.
I really appreciate your helpful replies so far.
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I actually can't even see my cheeks, so they don't obstruct my lower field of view at all. My eyebrows take up almost none of my upper field of view either. I have to look far upward to see them. My nose takes up more of my field of view than my eyebrow ridge, but I have to look far to the right (or left) before it causes any obstructions. It definitely does block things that the other eye can see, but only if I'm trying to look very far to the right. I don't know how to measure these things in degrees, but I can say that I don't ever feel in day-to-day life that my view is obstructed by my features.
I'd say that the eye depth in the photograph that you posted is fairly similar to mine, but I'm not going to post any pictures of myself on the Internet. Sorry, it's just a personal rule of mine.
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Fascinating question and one that I've never thought of before. (98% Caucasian, 2% Neandertal :))
First, I am completely unaware of any meaningful/practical obstruction of vision. Then, if I close one eye and look towards my nose I can see a substantial part of it, but - as Kryptid noted - out of focus. By looking upwards and really straining I can just glimpse my eyebrows, but since these are quite bushy, I think if I trimmed them I would not even get the glimpse.
I suspect that any obstruction that is present has long since been accomodated and overcome through unconscious strategies of eye movement and brain interpretation, developed during early childhood.
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Hi @00crashtest welcome to the forum. Please don’t post the same question multiple times as it makes it difficult to follow the replies.
The normal peripheral field of a single eye is measured from the fixation point, i.e., the point at which one's gaze is directed, are 60° superior (up), 60° nasal (towards the nose), 70–75° inferior (down), and 100–110° temporal (away from the nose and towards the temple).
The 60° towards the nose is because of the nose cutoff. Even among caucasians there are big differences in nose length, remember we are a very mongrel grouping, but the above figures are the area which is tested. I’m not aware of any big racial differences, but would expect an ophthalmologist to know.
If your concerned that your cutoff on the nasal side is greater than these figures you can do a quick test with a sheet of paper, protractor and pencil by gazing straight ahead at a fixed point and seeing where the pencil dissapears.