Doctor insights on:
Assist Blind People
I see why the need for guide dogs to assist the blind, but why do some people in scooters have them?
Different handicap: People in scooters are handicapped with an inability to walk or move. Some are blind but most are not. Dogs can be used for orientation but also can be a warning, or a companion, and some are trained to retrieve objects for their owners. So they are multifunctional - isn't that terrific? ...Read more
I understand how guide dogs to assist the blind, but why do some people who drive scooters have them?
I understand the need for guide dogs to assist the blind, but why do some people without canes have them?
Either-Or, not both: Service dogs require the use of one hand, and the other hand is kept free to interact with environmental obstructions such as doors. Leader dogs are way more effective than canes in most cases, because they think! the dog will keep his or her companion out of harm's way. A cane can notify the user of obstructions and help in ambulation but can't stop someone from walking into traffic! ...Read more
Complicated patient: With a patient like this, i would set them up for occupational/phycial therapy evaluation as well as with a psychologist for counseling. This many health issues can be difficult to deal with especially if all recent onset. He also needs a good internist to monitor these and other health issues. ...Read moreSee 2 more doctor answers
Blind at birth: While prematurity leading to hyperoxygen retinal degeneration can severely impair vision, there are some other rare conditions that may completely impair vision including hypodevelopment of the eyes, cortical blindness, and various internal eye maldevelopments. You pediatrician can help sort these out and find the proper specialist for help. ...Read moreSee 3 more doctor answers
Drop in blood pressu: your blood pressure is dropping when you stretch, causing an alteration in vision. Either your blood pressure is low to begin with, or you may have a conditiion in which too much of your blood is going to your arms when you stretch, subclavian steel. I would talk to your primary doc about it. ...Read more
Yes, but it's rare: Vision starts at the front of the eye and ends at the back of the brain. Trauma anywhere along the way can cause vision loss. Obviously if one lands on their face, eye damage can occur. But closed head trauma can damage the nerves and brain tissue that process vision. Temporary focusing problems are common with concussions but permanent brain damage to vision is possible if the trauma is severe. ...Read more
Many: The most common causes of blindness around the world include cataracts, macular degeneration, and glaucoma. Of those 3, cataracts are highly treatable. Improvements in vision with macular generation is largely limited to about 15% of cases which are the 'wet' form. Glaucoma damage is preventable but not restored with treatment. Parasitic eye disease (eg river blindness) occurs in the 3rd world. ...Read more
Experience!: It takes time and practice. Blind people become expert at memorizing their surroundings so that they know, for instance, how many steps from the bed to the door. They listen carefully for echoes off of their footsteps. Many learn to use a cane to sense obstacles in their way. ...Read more
Proper match: Guide dogs are wonderful when there is a good rapport between the dog and the blind person. Obviously the blind person must be mobile, and have the ability to care for a dog. These carefully trained dogs are then matched at training centers with the potential next owner and all has to work well to allow the dog to leave with that person. ...Read more
Blindness: Self induced blindness is very rare and may be associated with mental illness. Pressure on the eyes can result in central retinal artery occlusion. Not controlling blood sugars in diabetes and not controlling hypertension can result in self inflicted blindness. The real question is why would anyone make themselves blind? Psychiatric care should be considered. ...Read more
Can't tell colors: Most people with color-blindness have little doubt about it. These men (color-blindness is rare in woman) cannot distinguish many colors that other people can. For example, the colors green and brown often look identical to a color-blind person. There are online tests you can do - just google "colorblind test". ...Read more
Depends : Disability is defined by not having the physical and / or mental capacity to work. Vision is one component. It depends on your insurance policy, state and federal criteria and the potential demands on our job. They do have the right to see if you are trainable in another job. ...Read moreSee 2 more doctor answers
Testing: The most common type of "color blindness" is red-green color deficiency. Blue-yellow deficiency or true color blindness (achromatopsia) are rare. Color testing can identify which. The problem is a lack of certain types of cones or their opsins (light-sensitive compounds). Red-green deficiency can be adapted to fairly easily and is not very limiting, but the others can significantly impact vision. ...Read more
Get an eye exam: The term "blindness" can be interpreted in many different ways. Central vision can be impaired by a simple need for glasses, and the problem can be easily solved. Peripheral vision loss is more unusual, and typically does have an underlying cause of more significance. Only through an eye exam can a disease process by diagnosed and treated. ...Read more
Many causes: Loss of vision can be associated with macular degeneration, ischemic optic neuropathy, cataracts, trauma, hereditary problems such as retinitis pigmentosa, and a host of inflammatory and infectious conditions. One of our ophthalmologists could certainly expand upon this answer, and referral will be made. ...Read more
Support for blind: On a personal level, loss of vision is a grieving process, and any acts of friendship and support will help. Help with transportation, reading mail and paying bills, and shopping are common needs. There are social services available to help, as well as state and private organizations to help with needs of the visually handicapped. Social workers can help people get plugged into these services. ...Read more
Many causes: Blindness in newborns can be from a variety of fetal insults including infections of various sorts. There are also a number of genetic reasons for blindness. These can be increased with the marriage of first cousins which is why this is discouraged. ...Read moreSee 1 more doctor answer
Depends on cause: If you are blind from an acquired problem - trauma, diseases of childhood, etc. Than these will not be passed on. If you are blind from an inherited defect, you could pass this onto your offspring. A genetic counselor can determine this for you and calculate your odds. ...Read moreSee 2 more doctor answers
Active research: Depends in part on the reason for the blindness. Electronic light detector arrays are in development for those with retinal light receptor degeneration such as retinitis pigmentosa. Stem cell work may be useful in time as ways to replace non-functional cells. Restoration of vision is an area of active research and new discoveries are widely publicized. ...Read more
Depends: A common source of such phenomena is alterations in the health and architecture of the macula, the area of central sharp vision. This can last a long time. Temporary changes can occur due to migraines and vascular changes. There are many other causes so if this is occurring, see your ophthalmologist for diagnosis. ...Read moreSee 1 more doctor answer
Nothing if total: A completely blind person, unable to see any light at all, does not develop visual input or perception. All of the other sensory inputs work hopefully but a truly blind person sees nothing. ...Read more
Of course: Sadly people go blind from injury, strokes, intrinsic eye disease, inherited eye disease and other factors. When this happens you need an answer as to why and whether it is reversible from your ophthalmologist. Otherwise, if permanent, then you will need assistance for the blind from the proper organizations. ...Read more
See your doctor: When you say that you "go blind", do you mean vision goes black, whites out, or becomes blurred? Each of these has a different origin. You should see either your general doctor or eye doctor to help figure out the cause of your symptoms. The sooner you are evaluated, the better. ...Read more
Don't Ignore It!: Your question states you are 18, but also states '47 years'. At 47, it's very common to start having a lot of trouble focusing at near. Most serious conditions will affect both near and far vision. Without knowing more about your concern, it's difficult to know how worried you should be. But if you truly think you're going blind, you should see an eye doctor asap. ...Read more
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