Near sightedness is a condition whereby the eyeball is too long or cornea has excess curvature such that light entering the eye is focused in front of the retina rather on the retina itself.
The exact cause of nearsightedness is unknown but there are two factors that may be responsible for its development.
1. Visual stress
2. Heredity
Individuals who spend considerable time reading or working at a computer or engage in other types of intense close visual work may develop nearsightedness.
There is credible evidence that many people inherit nearsightedness or are at least predisposed to the condition, especially if both parents suffer from the condition.
Far sightedness (hyperopia) is a condition where the eye is shorter than normal, the cornea is not curved quite enough or the lens sits further back in the eye than is normal.
This condition can be inherited especially if both parents suffer from it.
The other cause is through diseases like diabetes or glaucoma.
Answer:
Several strains of bacteria can cause acute bacterial meningitis, most commonly: Streptococcus pneumoniae (pneumococcus).
Explanation:
This bacterium is the most common cause of bacterial meningitis in infants, young children and adults in the United States. It more commonly causes pneumonia or ear or sinus infections.
C family history means predisposition
Answer:
Answer: A. Neutrophils gather at the site of infection and release histamin,
while macrophages ingest antigens before they enter the bloodstream.
Explanation:
Neutrophils are specialized white blood cells which are capable of fighting
against the infections. Neutrophils are required at the site of injury and
produces histamin to fight against inflamation. Whereas the macrophages
are type of monocytes that ingest foreign antigens or bodies like bacteria
and virus which could enter the bloodstream and cause disease oriented
symptoms.
Explanation:
Correct me if I'm wrong
