As People Age,they Often Have Trouble Seeing near Objects

question 2

Multiple Choice

As people age,they often have trouble seeing near objects.This farsightedness is treated by

• A)radial keratotomy.
• B)an unevenly ground lens to compensate for an uneven cornea.
• C)cataract surgery.
• D)wearing concave lenses to refocus the image on the retina.
• E)wearing convex lenses to refocus the image on the retina.

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Definitions:

Oxytocin

A hormone produced by the hypothalamus and released by the pituitary gland, playing roles in childbirth, lactation, and social bonding.

Prostaglandins

A group of lipid compounds that are produced within the body's tissues and have various functions, including involvement in inflammation and pain.

Estrogen

Substance that exerts biologic effects characteristic of estrogen hormone, such as stimulating female secondary sexual characteristics, growth, and maturation of long bones, and help controlling the menstrual cycle.

Ductus Venosus

A fetal blood vessel that connects the umbilical vein to the inferior vena cava, bypassing the liver.