Mark, a 75-year-old grandfather, complained that his vision was becoming obscured. Upon examination by an ophthalmologist he was told he had cataracts. What are they, how do they occur, and how are they treated?

Q: 48 A 56-year-old woman gradually loses vision in the temporal parts of the visual fields of both…

A: A neoplasm is an abnormal mass of actively dividing cells in the body. It may be classified as…

Q: What is the function of the optic chiasma?

A: Optic chiasma is found beneath the hypothalamus in the brain. It is found in all vertebrates.

Q: What makes the lens of the eye clear? What happens when cataracts form?

A: The eye lens is the biconvex transparent structure that refracts light and focuses on the retina. It…

Q: What intraocular gas(es) be used in the treatment of retinal tears???

A: In the treatment of retinal tears, intraocular gas is repeatedly utilized as a temporary tamponade…

Q: which cells direct colored light? Are these cells in the choroid,sclera, or retina layer of the eye?

A: The eye has rods and cones. Rods help us to see in the dark. Cones help us to see in bright light.

Q: Distinguish how blindness can occur in maculardegeneration, glaucoma, and cataracts.

A: The eye is a special sensory organ that receives light from the environment and sends signals to the…

Q: Why is aqueous humor important?

A: The aqueous humor is a translucent water-like liquid comparable to plasma, but carrying low protein…

Q: What should be the strength of an odor that is basically nontoxic in nature so that it is able to…

A: When the odor molecules bind to these smell receptors, they trigger a signal to the brain telling it…

Q: What would cause the greatest loss of visual function—trauma to cranial nerve III, IV, or VI? Why?

A: Cranial nerves are the set of nerves that arise out directly from the brain or brainstem. Cranial…

Q: What is night blindness?What causes night blindness?How can it be remedied?

A: Vision refers to the power of sensing with eyes. Eye is the chief organ of the visual system that…

Q: Explain why it is not uncommon to develop pink eye after having a cold?

A: Pink eye or conjunctivitis is a common eye infection caused due to bacteria or virus that normally…

Q: Otitis media is a very common ear infection that children tend to suffer from. How does this…

A: Hearing is of the special senses present in the human body, and ears are the organs concerned with…

Q: Name the eye defect occuring in old people whereby they are unable to see near objects.

A: Eye is the chief organ of the visual system. In most mammals they are paired structures and are oval…

Q: Visit this site (http://openstaxcollege.org/l/NYTmeningitis) to read about a man who wakes witha…

A: Microorganisms are small organism that cannot be seen by naked eyes. Microorganism can be harmful to…

Q: Winston Campbell brings his 2-year-old daughter, Mica, to the Emergency Room (ER) with a fever of…

A: Collecting data and information is an important part of Nursing Assessment. The data will help in…

Q: What is the function of the vestibulocochlear nerve?

A: The vestibulocochlear nerve can be defined as the nerve that helps in the transmitting the signal of…

Q: What is the difference between ototoxicity and cochleotoxicity?

A: Several reasons can hamper the hearing problems by the ears. Ototoxicity and coxhleotoxicity are two…

Q: whar is the reservoir of acute otitis media?

A: Acute otitis media is an infection of the air-filled space behind the eardrum (the middle ear). An…

Q: What are couple of examples of vascular changes in the back of the eye and their implications?

A: The energy that allows us to see is known as light. A source of light, such as the Sun, emits light.…

Q: Labyrinthitis is an inflammation of the inner ear. What symptoms would you expect in a patient with…

A: An inner ear infection that is associated with the inflammation of the ear's innermost part called…

Q: what is the reservoir of acute otitis media?

A: A middle ear infection, also known as acute otitis media, is an inflammation of the air-filled area…

Q: Why is the occlusion effect occuring in patients with middle ear disorders?

A: Auditory masking occurs when the perception of one sound is affected by the presence of another…

Q: What causes sensorineural deafness?

A: Sensorineural deafness is a hearing loss that occurs when the inner ear gets damaged or the auditory…

Q: How is the cochlear nerve formed?

A: The ear is the organ for hearing and balance. The parts of the ear include: External ear comprising:…

Q: How could a diet deficient in vitamin A affect vision?

A: Vitamins are the substances which are required by the body for better health and performance of the…

Q: What do you mean by cataract and how it can be corrected?

A: Introduction  Cataract is the disease associated with the eye lens. Cataract is referred to the…

Q: If Kari is diagnosed with glaucoma, what is the most likely treatment? Describe the treatment…

A: Glaucoma is known as a disease mainly found in the eye and frequently occurs in old age people and…

Q: What are the functions of the fibrous layer of the eye?

A: The human eye is a light-sensitive organ that enables vision. Photoreceptive cells in the eye, such…

Q: Describe the vitreous humor of the dissected eye.

A: The eye is the organ of the vision. The structure of the eye consists of the iris, cornea, retina,…

Q: What are symptoms and treatment optioins for cataracts, macular degeneration, and glaucoma?

A: Eye conditions like cataracts, macular degeneration, and glaucoma cause low vision, especially in…

Q: Wayne is a 75-year-old retired teacher who comes to the physician’s office feeling quite upset. He…

A: Earwax is additionally called cerumen is made by the body to ensure the ears. The ear wax has both…

Q: What is a blind spot of the eye?

A: When the light reaches to our retina, it sends electrical bursts with the help of the optic nerve to…

Q: What are the causes of autoimmune eye disease and what is the effect of medication or treatment on…

A: The condition in which the immune system of our body attacks healthy cells is called an autoimmune…

Q: Fill in the gap with appropriate phrase or word. 1. ….................. The lateral lemniscus…

A: The reflex actions are under the regulation of the medullary center. There are many such centers…

Q: Choose an auditory disorder, and indicate where the pathology lies (outer ear, middle ear, inner…

A: The ear is divided into 3 parts Outer ear  : Pinna , external auditory meatus,  tympanic membrane…

Q: Mention the benefits of the third eyelid in surgery to treat corneal ulcers

A: The cornea is the transparent, dome-shaped outermost layer of the eye that covers the iris, pupil,…