If you lay your forehead on the palm of your hand and look down at your forearm, you get a distorted view of the connection between wrist and forearm, as well as a sort of "ghost" forearm silhouette at the margins. What's this called, why does it happen, and are there any paintings or other art that captures these effects?
What would happen if you practiced focusing your vision in and out? Would you strain your eyes? [more inside]
Is the average person really that dependent upon stereoscopic vision? [more inside]
I am already blind in one eye, and blindness is slowly progressing in the other eye. I can still see, but I'd like some tips on how to prepare myself for total blindness. [more inside]
My vision is changing, which is not unusual, I'm getting older. But I'm having the odd problem when I use cameras (view cameras and medium format as well as 35mm) in getting the best focus (manually). How can I best use cameras, lupes, focussing screens and the like as my vision changes thanks to my advancing years? [more inside]
Assuming you don't drive due to poor vision (so you can't rent a Zipcar) is it feasible to live in the Bay Area and have a decent life, with the ability to get around, go to work, and socialize? With respect to San Francisco and Silicon Valley, what areas would be best, and what parts would be too inconvenient or time-consuming to get by without driving?
Yellow-tinted night vision sunglasses? Do these things actually work as advertised?
Did I have a mini-stroke in my sleep? Should I go to the ER or a walk-in clinic for temporary vision loss in mainly one eye even though my vision is back? Will the doctors think I'm wasting their time? [more inside]
My optometrist just spotted a mystery mass in my left eye that's making my vision partially blurry. She's referring me to a specialist in Seattle who can see me in the middle of next month, but I'd really like to get an appointment sooner--and locally. Can anyone recommend a good, competent ophthalmologist with a decent bedside manner in Bellingham, WA?
How can I prepare myself for likelihood of being completely blind by the time I'm 35? [more inside]
Attention glasses/contacts wearers! Do you have a major difference in the prescription between one eye and the other, aka anisometropia? Have you found any benefit from iseikonic lenses? [more inside]
Which eyeglass shop in NYC could most ably adjust eyeglasses to fit an Asian face? [more inside]
How would you quantify wobble? [more inside]
I'm looking at cataract surgery in the next year or two, and wondering what my options are as far as lenses go. [more inside]
After a bad experience I am finally ready to wear contact lenses again... but this time I want to be absolutely, totally, 100% safe and sterile about it. What steps should I take to minimize my chances of infection? [more inside]
Any harm in wearing sunglasses with two mismatched lenses? [more inside]
What animals/insects/etc have better vision than people? [more inside]
In the U.S. slavery system, how did blind slaves work?
I found this pinhole glasses sold at the local pharmacy, and feel intrigued by its claim to help me see better and improve my vision overtime (I'm short-sighted). My skeptic alarm rang with warnings (if it's too good to be true, it usually is, etc.), but a quick google-fu turned up nothing substantial to refute such claims. So, does anybody have any experience or anecdotes to share in regards of such product ?
Have there been any reports of laser eye surgery causing periodic blurry vision in both eyes? [more inside]
I can't tell if I'm having very normal vision experiences or if I need to go to the doctor. Specifically, I keep getting an after-image of a dot when I haven't been looking at anything bright. [more inside]
Often, when I view repeating high-contrast patterns in blinds, clothes, floors, escalators, or other objects I find them to be disconcerting verging on painful. You aren't my doctor, but does this sound familiar at all? Googling has turned up nothing useful. [more inside]
Am I going blind? All of a sudden I have a large blindspot at about 4 o clock in my field of vision. I also have a terrible headache, both of which developed today. [more inside]
What are these moving lines in my vision? [more inside]
Probably need my first pair of glasses. Haven't had my eyes checked in years. Should I see an opthamologist or an optometrist? [more inside]
I'm posting for my wife who just got her eyes dilated at 4 p.m. (so she can't look at the computer to type this herself). I tried to Google my question and couldn't come up with any satisfactory answers. The question is why doesn't dilating your eyes and then viewing any form of light harm your eyes? [more inside]
IKnowYouAreNotMyDoctor-filter: one blurry eye in the morning. [more inside]
In 35 mm terms, how wide angle are our eyes? [more inside]
Is it normal to have recurring headaches while wearing contacts? Yes, YANMD. [more inside]
Any advice for getting rid of or living with floaters in my eyes? [more inside]
I'm interested in detecting edits in a given video stream. Is there any literature out there on edit detection? [more inside]
Satellite photos: what interesting features can be seen or measured in them (or other aerial photos), and where can I get a supply of images? [more inside]
Help me find an odd magnifying glass. [more inside]
I'm seeing a weird "floater" on the right side of my field of vision. [more inside]
I am nearsighted with a slight astigmatism, have about $2,000 to spend, and a desire to never wear glasses again. [more inside]
Should I be worried about this? I went to the doctor this morning to get checked out for cold/flu symptoms; I didn't think it was serious -- I just wanted to check that I didn't have H1N1, but the doctor told me that the treatment I'd been getting for prostatitis was "highly unusual for someone in their 20s", and he said I should immediately stop taking the antibiotic I'm on (Septra/Bactrim) because I might be having an allergic reaction to it, or possibly an autoimmune reaction. [more inside]
I've been wanting to switch to a Mac for around a year, but my vision isn't perfect and Macs seem to be designed for designers with 20/20 vision. [more inside]
VisionFilter: Should I switch from rigid gas permeable lenses to soft? [more inside]
Should I stick with my current contact lenses, or go with one of two other brands? [more inside]
I'm considering wearing contact lenses again in lieu of eyeglasses to make working with camera viewfinders easier. I've worn glasses since i was a kid. Got the usual array of problems: Nearsightedness, astigmatism, presbyopia. Currently wear progressive lenses in my glasses. However, I find reading with my progressive lenses is unpleasant, so I usually take them off. I use a separate pair of glasses for computer work. I was fitted with a test pair of soft monovision lenses last week. They're not going to work. Close vision -- within arm's reach -- is unacceptable. I told the clinician I wanted contacts to provide vision correction at least as good as my glasses. I want any contacts I wear to work at distance vision, close vision, reading, driving, computer work, etc. She replied that I wouldn't get that with contacts. Is she right?
I want to color correct my digital photos, but I have a color vision deficiency. Up to now, I've been correcting the levels manually, but relying on the auto-color features in Picasa or Photoshop for colors, but often this doesn't do a good job and the colors look off, even to me. I can manually correct the levels and adjust the colors so they look right to me, but that doesn't guarantee they will look right to others. Is there any way to color correct numerically (for instance, using the eyedropper tool on someone's face to to see if the RGB value of skin falls within a skin-tone range) Otherwise, is there a service that I can send my digital photos to where they can color correct them perfectly and send them back? I'm interested in the digital files, not in getting prints.
My eyes are dry and sore when I'm *not* wearing my contact lenses. Does anyone else experience this? [more inside]
Are those contact lenses that compensate for red/green colour blindness actually any use? [more inside]
Occasionally, I experience a strange visual phenomenon that resembles a vortex of some sort... [more inside]
Since I last posted I've been feeling much better, but now have very new and strange symptoms. I've been seeing flashes in my vision, felt like I was misreading text or having difficulty expressing myself verbally (words came a bit more slowly than usual), and went to the ER when I saw (and a friend confirmed) my pupils were unevenly dilated. I've also had a recurring, painless rash of tiny red dots that is only ever present on my right hand, and comes and goes rather quickly. All symptoms started two or three weeks ago. I can't see a doctor for a week or two, but when I can, what kind should I see and what should I ask about? [more inside]
Please help me with my glasses. Farsighted, astigmatism, presbyopia. Glasses provide only a very small field of sharpness. Details within. [more inside]
Is there any way for a blind superhero to experience a distinction between colors? [more inside]
My left eye is dead. I just discovered that my left eye doesn't work well. Everything looks blurry at every distance. I can't easily read a book with it, or read a digital clock on the wall. I didn't realize it because my right eye is still OK, and was compensating in focusing things. [more inside]
I have some long term degenerative eye problems that may result in blindness over the next 10-20 years. What are some fields in which I could prosper despite this potential handicap? [more inside]