Flash blindness is an either temporary or permanent visual impairment during and following exposure of a varying length of time to a light flash of extremely high intensity, such as a nuclear explosion, flash photograph, lightning strike, or extremely bright light, i.e. a searchlight or laser pointer or landing lights ... Read more
In ophthalmology, injuries due to lightning strikes have been documented as various entities – ranging from keratitis, cataracts, uveitis in the anterior segments to retinal detachments, papillitis, and macular hole formation in the posterior segment.
Don't stand near a window to watch the lightning. An inside room is generally safe, but a home equipped with a professionally installed lightning protection system is the safest shelter available.
That combined with the methane gas in poop caused the bomb-like effect that traveled through the pipes, exploding the toilet in their master bathroom. ... The plumbing company said this is just as rare as getting struck by lightning yourself. Luckily, the mess will be covered by insurance.
Lightning can follow the wire to the handset and can injure the person using a landline. ... If someone is struck by lightning and they have a cell phone on them, it will usually melt or burn. People have taken that and blamed the cell phone, Jensenius said, but in reality it is unrelated.
Thanks to an encounter with Doctor Light, Barry can't see a thing. He's actually blind, if only temporarily. Let's acknowledge the third wheel, too. Throughout the night, Barry gets help from a guardian angel in the form of Crisco Cisco, acting as our hero's eyes.
Damage to the retina
Any damage to your retina, such as a detached retina or macular hole, is a possible cause of sudden blindness. A detached retina can cause a total loss of vision in the affected eye, or it may only result in partial vision loss, making it seem as if a curtain is blocking part of your vision.
Vision is completely recovered as the pigment is regenerated. During the daylight hours, flash blindness does not persist for more than 2 minutes, but generally lasts a few seconds.
In a nuclear blast, injury or death may occur as a result of the blast itself or as a result of debris thrown from the blast. ... Those who look directly at the blast could experience eye damage ranging from temporary blindness to severe burns on the retina.
Even if you suddenly find yourself the subject of a close-up photo shoot, there's no way that you'll be exposed to light powerful enough, close enough to your eye for a long enough period, to cause any permanent retinal damage. The final thing that makes flash safe is that the light isn't particularly focused.
Temporary loss of vision can occur in one eye and sometimes both eyes. It's usually a symptom of an underlying condition that's causing insufficient blood flow to the eye, such as a blood clot. The vision loss can last from seconds to minutes.
A blind person may have no visible signs of any abnormalities when sitting in a chair and resting. However, when blindness is a result of infection of the cornea (the dome in front of the eye), the normally transparent cornea may become white or gray, making it difficult to view the colored part of the eye.
If you're legally blind, your vision is 20/200 or less in your better eye or your field of vision is less than 20 degrees. That means if an object is 200 feet away, you have to stand 20 feet from it in order to see it clearly. But a person with normal vision can stand 200 feet away and see that object perfectly.
Though the flash itself isn't harmful, research shows that it can actually indicate whether or not your child's eyes are properly aligned when it causes redeye. As further evidenced by my own good eyesight now, studies show that bright camera flashes in infancy will not do any permanent damage to a baby's eyes.
Blindness is a lack of vision. It may also refer to a loss of vision that cannot be corrected with glasses or contact lenses. Partial blindness means you have very limited vision.
As an encounter with another Earth-2 meta-human leaves Barry blinded (right before his first date with Patty), Dr. Wells outs Cisco.
Blindness can be genetic (or inherited), which means that this problem gets passed down to a kid from parents through genes. Blindness also can be caused by an accident, if something hurts the eye. That's why it's so important to protect your eyes when you play certain sports, such as hockey.
Researchers have made a breakthrough in understanding what happens to the human brain after someone goes blind. The study out of the University of Pisa, Italy, found that the adult brain can actually learn to “see again” many years after a person went totally blind.
If your number is between -0.25 and -2.00, you have mild nearsightedness. If your number is between -2.25 and -5.00, you have moderate nearsightedness. If your number is lower than -5.00, you have high nearsightedness.
According to the Eye Doctors of Washington website, gray eyes, unlike blue eyes, often have flecks of gold and brown in them. If you look closely, you may even see gray eyes changing color. Depending on what a person is wearing and what color light they are in, a person's gray eyes may appear gray, blue, or even green.
And the vast majority of blind people have tear ducts and skin around their eyes and eyelashes and noses and things close to eyes. For Puck's sake!
You may still be able to drive a car or motorcycle if you only have sight in one eye (sometimes called "monocular vision"). You don't have to let the DVLA know about the loss of your sight in one eye (monocular vision), as long as you're still able to meet the standards of vision for driving.
When we get out of bed or stand up, the blood vessels in our body need to clamp down rapidly to maintain blood pressure going to the brain. If we stand too quickly, blood pressure can drop and cause dizziness, lightheadedness or fuzzy vision.
They may look to you like black or gray specks, strings, or cobwebs that drift about when you move your eyes and appear to dart away when you try to look at them directly. Most eye floaters are caused by age-related changes that occur as the jelly-like substance (vitreous) inside your eyes becomes more liquid.