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The intense heat generated by a lightning strike can burn tissue, and cause lung damage, and the chest can be damaged by the mechanical force of rapidly expanding heated air. [ 4 ] Just as heat can cause expanding air in the lungs, the explosive shock wave created by lightning (the cause of thunder) can cause concussive and hearing damage at ...
Peripheral (posterior) vitreous detachment occurs when the gel around the eye separates from the retina. This can naturally occur with age. However, if it occurs too rapidly, it can cause photopsia which manifests in flashes and floaters in the vision. Typically, the flashes and floaters go away in a few months.
However, if the eyes are exposed to a high enough level of light, such as a nuclear explosion, the blindness can become permanent. Flash blindness may also occur in everyday life. For example, the subject of a flash photograph can be temporarily flash blinded. This phenomenon is leveraged in non-lethal weapons such as flash grenades and laser ...
Reading in dim light causes eye strain rather than permanent damage to the eye. [203] Color blindness cannot be significantly alleviated by glasses or lenses. While there are lenses marketed towards the colorblind, their efficacy is doubted by professionals, and they do not enable wearers to see new colors. [339]
This wave of activity, called a cortical spreading depression, follows a particular pattern across the brain and can create a few different patterns of light in your vision. For example, the Mayo ...
Mayo Clinic, Rochester, was ranked in the top 10 in all but one of 16 specialties, in the top 4 in 13 specialties, and was the #1 ranked hospital in 8 of the 12 data-driven specialties. This year U.S. News expanded their common procedures and conditions list to 9 individual measures, and Mayo was one of fewer than 70 hospitals to score High ...
Millions of people are catching a glimpse of the solar eclipse — but the spectacle can lead to eye damage if you’re not careful. That’s because looking at the sun without eclipse glasses can ...
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