Q:
How Many Lumens Does It Take to Blind Someone?
A:
Quick Answer
Eighty lumens is sufficient to cause temporary flash blindness in dark conditions, and 200 lumens can cause temporary blindness in daylight. Visible light is not sufficient to cause permanent blindness, regardless of the intensity.
Continue ReadingFull Answer
A concentrated beam such as a high-intensity laser is necessary to induce permanent blindness with visible light. Damage to eyes from sunlight and artificial lamps comes from ultraviolet radiation rather than visible light wavelengths. Infrared radiation can also cause blindness by burning the retina. Radiation higher in frequency than ultraviolet light does not cause direct injury to the eye; it passes through the retina with minimal absorption.
Learn more about Optics & WavesRelated Questions
-
Q:
How Do Blind People Know When to Stop Wiping?
A: Though it is not well understood by those with working vision, blindness does not prevent a person from living a self-sustained life, including their own h... Full Answer >Filed Under: -
Q:
How Do You Test to See If Kids Are Color Blind?
A: Doctors most commonly test children for color blindness using the Ishihara Color Test, which involves a series of circles formed out of different-colored d... Full Answer >Filed Under: -
Q:
Can a Diabetic Dog Become Blind?
A: Cataracts are a common complication of diabetes in dogs that can lead to blindness if left untreated. Within nine months of being diagnosed with diabetes, ... Full Answer >Filed Under: -
Q:
What Colors Do Color Blind People See?
A: There are multiple types of color blindness, but the most common types involve an inability to distinguish between either red and green or blue and yellow.... Full Answer >Filed Under:
You May Also Like
-
Q:
What Is the Average Pay Scale for Someone in the Criminal Justice Field?
-
Q:
How Does Chromatic Adaptation Work?
-
Q:
Which Animals Are Thought to Be Color Blind?
-
Q:
Can Someone Check His Checking Account Online From Any Region?
-
Q:
Can You Drive If You Are Blind in One Eye?
-
Q:
Where Can Someone With a Binge Eating Disorder Get Help?
