what is restricted vision?
150005
Here are two very different restricted views of restricted vision:\n\nOne of the editorial comments in the article that irritated him the most was the "he has restricted vision." "All vision, by definition, is restricted, but the article made that sound like a failing," he explained while shaking his head in disbelief. "Vision has to be clear and must operate within parameters or else it becomes some wild, unrealistic notion with little chance of fulfillment or significance. And if the reflection of the vision God has shown me, which is best seen in the church described in Acts 2, is considered restrictive, I can live with that."\n\n\n1.         There must be an adequately unobstructed view in all directions from the steering position. \n\n\n2.         The area of obstructed vision for the helmsman ahead of with the vessel in an unladen state and with half of its supplies but without ballast shall not exceed 250 m :\n\n(a) two vessel lengths, to the surface of the water over an arc from abeam on either side through right ahead of the vessel, and\n\n(b) 200 m from the stern of the vessel to an object situated 4 m above the surface of the water over an arc from abeam on either side through right astern of the vessel.\n\n\nOptical means for reducing the area of restricted vision may not be taken into account during the inspection.
472823
You see by using muscles in your eyes, so if you didn't use those muscles for a few months your muscles would experince atrophy and won't work right for a while.  I don't think you would go completely blind though.  It's like in the movie kill bill when Uma's in a coma and can't walk for a while.
213425
Apparently IRS goes by the definition stated by the Social Security.\n\n"..when your vision cannot be corrected to better than 20/200 in your better eye, or if your visual field is 20 degrees or less, even with Corrective lens.."\n\n.:Fishie:.
511294
It indicates the person is near sighted.
384345
photoreceptors. they allow us to be able to see in low light such as moonlight but also in very bright lights. the photoreceptors are devided in to two groups rods and cones.\nrods are for low light\ncones for bright light. \nolder people can damage photo receptors and thats one reason for legal blidness. if you have damage you can not legally drive.
115469
Carrots, onions, and other vegetables will not decrease your need for glasses.  The See Clearly method also will not work.  If you are nearsighted, it means that your eye is either too long or too strong, so that it focuses light in front of your retina instead of exactly on it.  If you are farsighted, it means that your eye is either too short or too weak so that it focuses light behind your retina.  The only way to correct this is by using lenses or by re-shaping the front of your eye (the cornea).\n\nYou say that you don't want to wear glasses.  Have you considered contacts?  You could also consider LASIK or a temporary, reversible procedure called Orthokeratology (Ortho-K).  Ortho-K uses gas permeable contact lenses to temporarily re-shape your cornea while you sleep so that you don't need to wear glasses or contacts during the day.  Not everyone is a good candidate for all of these options, so talk to your eye doctor about what would work the best for you.
570309
behind the retina - farsighted (HYPEROPIA)
9548
Partly blind.   If you are partly blind, you must get a certified statement from an eye doctor or registered optometrist that: \nYou cannot see better than 20/200 in the better eye with glasses or contact lenses, or\n\nYour field of vision is not more than 20 degrees. \n\n\n  If your eye condition will never improve beyond these limits, the statement should include this fact. You must keep the statement in your records. \n\n  If your vision can be corrected beyond these limits only by contact lenses that you can wear only briefly because of pain, infection, or ulcers, you can take the higher standard deduction for blindness if you otherwise qualify.
43754
There are many things that it could be and it would be impossible to know without seeing it.  Make an appointment with an optometrist or ophthalmologist to have it examined.
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Night vision\n\n Two American soldiers pictured during the 2003 Iraq War seen through an Image IntensifierNight vision is the ability to see, whether through biological or technological means, in a dark environment. Most instances, whether biological or technological, use a combination of two approaches: enhanced spectral range, and enhanced intensity range.\n\nContents [hide]\n1 Enhanced spectral range \n2 Enhanced intensity range \n3 Biological night vision \n4 Night glasses \n5 Thermal vision \n6 Image intensifier \n7 Night vision goggles \n8 See also \n9 Patents \n10 External links \n \n\n\n[edit] Enhanced spectral range\nEnhanced spectral range techniques make the viewer sensitive to types of light that would be invisible to a human observer. Human vision is confined to a small portion of the electromagnetic spectrum called visible light. Enhanced spectral range allows the viewer to take advantage of non-visible sources of electromagnetic radiation (such as near-infrared or UV radiation).\n\n\n[edit] Enhanced intensity range\nEnhanced intensity range is simply the ability to see with very small quantities of light. Although the human visual system can, in theory, detect single photons under ideal conditions, the neurological noise filters limit sensitivity to a few tens of photons, even in ideal conditions [1]. Some animals have evolved better night vision through the use of a larger optical aperture, improved retina composition that can detect weaker light over a larger spectral range, more photoefficient optics in the eye, and improved neurological filtering which is more tolerant of noise. Enhanced intensity range is achieved via technological means through the use of an image intensifier, gain multiplication CCD, or other very low-noise and high-sensitivity array of photodetectors.\n\n\n[edit] Biological night vision\nIn biological night vision, molecules of rhodopsin in the rods of the eye undergo a change in shape as light is absorbed by them. The peak rhodopsin build-up time for optimal night vision in humans is 30 minutes. Rhodopsin in the human rods is insensitive to the longer red wavelengths of light, so many people use red light to preserve night vision as it will not deplete the eye's rhodopsin stores in the rods and instead is viewed by the cones.\n\nSome animals, such as cats, dogs, and deer, have a structure called the tapetum in the back of the eye that reflects light for even better night vision than humans, in which only 10% of the light that enters the eye falls on photosensitive parts of the retina. Their night vision likely falls between a Generation 1 and Generation 2 image intensifier.\n\n\n[edit] Night glasses\nNight glasses are telescopes or binoculars with a large diameter objective. Large lenses can gather and concentrate light, thus intensifying light with purely optical means and enabling the user to see better in the dark than with naked eye alone. Often night glasses also have a fairly large exit pupil of 7 mm or more to let all gathered light into the user's eye. However, many people can't take advantage of this because of the limited dilation of the human pupil. To overcome this, soldiers were sometimes issued atropine eyedrops to dilate pupils. Before the introduction of image intensifiers, night glasses were the only method of night vision, and thus were widely utilised, especially at sea. Second World War era night glasses usually had a lens diameter of 56 mm or more with magnification of seven or eight. Major drawbacks of night glasses are their large size and weight.\n\n\n[edit] Thermal vision\nFar infrared, or thermal, sensing is generally not considered night vision because it is constructed with mechanisms substantially different from the methods used to sense visible light. It is possible to construct an imaging device with microwave energy, sound, or any other signal that is reflected or radiated by objects and can be focused and sensed, but these are also not genera
55991
Age-related macular degeneration (ARMD) is a complex disease process in which the cells in the most sensitive part of the retina (the back of the eye) start to die off.  The exact causes of the disease are unknown and there are very few treatment options.
912610
It means restricted for anyone under 17 unless you have an adult or parent with you. The content is viewed as too 'mature' for younger viewers. Hope This Helps!
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Negatives are prescriptions for near-sightedness (can't see far away) also known as myopia. This happens when the eye is longer then normal from the front to the back. Postives are for far-sightedness (can't see up close), also known as hyperopia. This occurs when the eye is shorter than normal from front to back. The same symptoms of hyperopia occur in most aging people due to a inability of the aging eye to focus properly - a condition known as presbyopia. It is often confused with hyperopia because the first symptoms are blurry vision up close, but the two conditions have different causes, and presbyopia worsens to include blurry vision at all distances. Presbyopia is believed to be caused by a loss of flexibilty in the lens of the eye over time. \n\nAstigmatism is caused by an irregularly shaped cornea or lens, and causes blurred vision as well. Please refer to the site listed if you would like to know more.
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there have been racers who wear glasses under their helmets.\nthe thing about short sighted drivers is that their eyeballs are slightly elongated, and under high G-forces, the retina may detatch from the eye. thats why in the air-force, there is a maximum limit for short sighted pilots
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Lazy eye, or amblyopia, is an eye condition in which disuse causes reduced vision in an otherwise healthy eye. The affected eye is called the lazy eye. The impairment of vision in the lazy eye occurs in three phases. In the first (suspension) phase, the brain turns the weaker eye on and off. In the second (suppression) phase, the brain turns off the lazy eye indefinitely. At this point, the eye still has usable vision and can function well if the other eye is covered. In the last (amblyopia) phase, which occurs after age seven, the eye loses all the sensitivity that is essential for good vision because it has not been used for so long. Lazy eye is a visual problem with potentially serious consequences. If left untreated, the affected child may have permanent loss of vision in the lazy eye. Because of loss of vision in one eye, these children cannot see threedimensional images very well—all images appear flat. They also have problems with depth perception. This has serious consequences in their future ability to work in professions that require good vision in both eyes. Affected children also have increased risk of blindness should something happen to the good eye.\nThe following are probable causes of lazy eye:\n• Strabismus, or misalignment of a child’s eyes (crossed eyes). This is the most frequent cause of lazy eye. Approximately half of all children with crossed eyes will develop a lazy eye. In children with crossed eyes, the images do not coordinate, thus confusing the brain. Therefore, the brain will suppress the image that comes from one eye and predominantly use the image from the stronger eye.\n• Anisometropia (unequal refractive power). In this case, there is difference in image quality between the two eyes because one eye is severely nearsighted or farsighted. In other words, one eye focuses better than the other. The brain will mostly use the clearer image from the good eye. The other eye will become underdeveloped due to neglect.\n• Congenital cataract. The lazy eye can not see well because its lens is already cloudy at birth.\n• Ptosis (drooping eyelid). Vision in the lazy eye is blocked or impaired by the drooping eyelid.\n• Corneal scarring. The image quality of the affected eye is poor due to scarring in the cornea.\nThe following are risk factors for amblyopia:\n• rubella (German measles) or other infections in the mother during pregnancy\n• premature birth\n• other family members with vision problems in childhood Lazy eye may not present obvious symptoms. For this reason, it is important for small children to have regular eye examinations.
182668
Most forms of Glaucoma can be treated so probably not. It is not the kind of condition that would keep a person from working unless it was severe or had been untreated for a long time. What they would look at would be the ability to see.
186436
are you blind ,if not drive around.