Answer:
Common causes of blindness are diabetic neuropathy, glaucoma and cataracts.
Explanation:
Blindness refers to the complete lack of functional vision.It occurs when an inadequate amount of light hits the retina, or the information has not been delivered to the brain correctly.
Complete blindness : characterized by a complete and total loss of vision. Merck Manuals reports that legal blindness is defined as having equal to or worse than a 20/200 visual acuity in the better eye. Having a visual acuity of 20/200 means that someone with normal vision can see an object at 200 feet, and a person with impaired vision can see at a distance no further than 20 feet. Several different diseases can cause complete blindness; some develop later in life and some are present at birth. The leading cause of blindness in the United States is diabetes, according to the National Eye Institute. Diabetes causes diabetic retinopathy, which results in destruction of the retina. Other causes of complete blindness include age-related macular degeneration, which the National Eye Institute calls the most common cause of blindness in adults who are 60 or older; cataracts, which obstructs light from hitting the retina because of opaque patches on a lens; and glaucoma, which causes blindness due to damage to the optic nerve.
Color Blindness
:
People who have color blindness, also called dyschromatopsia, are unable to distinguish certain colors. This type of blindness more commonly affects men than women. Merck Manuals reports that the most common form of color blindness is red-green color blindness, which makes it difficult to distinguish certain shades of red and green. Color blindness is almost always present at birth, and is usually caused by the presence of a defective gene on the X chromosome. The reason that more men are affected by color blindness than women is that women have two X chromosomes; thus, even if they are "carriers" of a bad gene, their other X chromosome usually has a functional gene. Because men have only one X chromosome, the presence of one bad gene is sufficient to cause color blindness. Defective retinal cells result in some forms of color blindness; other forms are caused by defects in the optic nerve.
Night Blindness
:
Night blindness is vision impairment that occurs at night or when light is dim. It does not generally result in a complete lack of vision but significantly impaired vision. People with night blindness often have difficulty driving at night or seeing stars. Several different factors cause night blindness, according to the University of Maryland Medical Center. These factors include cataracts, birth defects, a vitamin A deficiency, or a retinal disease called retinitis pigmentosa
Answer:
gas and a lighter.
Explanation:
if you do not like the answer that i have presented you with on this fine day then you are a smelly sea pickle.
The conscious client was admitted to the emergency department with an overdose of the anxiolytic alprazolam (Xanax). The nurse implement first prepare to administer an emetic with activated charcoal.
Chemicals can be captured in the pores of activated charcoal. In order to treat some poisons that have been ingested, it is normally administered orally. For additional purposes, the evidence is scant. Peat, coal, wood, coconut shells, or petroleum can all be used to make charcoal. Charcoal is heated in the presence of a gas to create activated charcoal. The charcoal develops numerous interior pores as a result of this process. Activated charcoal may trap pollutants thanks to its pores. To treat poisoning, activated charcoal is frequently employed. Additionally, it is claimed to treat excessive cholesterol, hangovers, and upset stomach, but the majority of these applications lack solid scientific backing.
Hence, activated charcoal is good adsorbent.
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Pathogens that cause communicable diseases:
Viruses.
Bacteria.
Fungi.
Protists.
Diseases that are caused by bacteria:
Cholera.
Leprosy.
Tuberculosis.
Plague.
Syphilis.
Anthrax.
Answer:
Indigestion due to lack of HCl
Explanation:
Indigestion has many causes. One of the most common causes is a deficiency in stomach acid (HCl). This inability to produce adequate stomach acid is common in people over 50 years of age who are free of gastric disease. Some studies even report as high as 25-35% of the elderly have this condition.
