Eyes and cataract conditions biology essay

It causes an excessively opaque margin that obscures vision even where the pupil has been dilated. A cataract is a clouding of the normally clear and transparent lens of the eye which results in decrease of vision.

A soft cataract is characterized by uniformity in occurrence, being of lighter color than other forms, completes coverage of the eye in a much shorter time and commonly occurs at an early age unlike hard cataracts. Standard topical treatment for psoriasis includes coal tar and dithranol alone or in combination with salicylic acid.

Recently three other pigments have been found in human eye, they are erythrolabe, chlorolabe, and cyanolabe which are sensitive to red, green and blue light respectively. Acetazolamide diamox inhibts the enzyme carbonic anhydrase, that is necessary for the secretion of aqueous humor.

Cataracts Essay Sample

Help in killing germs thus prevent infection. Topical corticosteroids should not be used. There are two main types of photoreceptors: The lens shows different curvatures in different regions of the eye. There are a large number of other disinfectant like alcohol, saline, chlorinated solutions, weak acids, metallic salts and dyes which are of limited value.

Loss of sensitivity to contrast where one observes a color being less vivid is a sign in the advanced stage.

What you need to know about cataracts

The head is said to cast a sound shadow on the sound coming in to the ear from the opposite side of the head. Interferon gamma administered systemically appears to resolve psoriatic lesions, though its role in psoriasis remains to be established.

Essay on Eye: Structure, Working and Defects

Rods are responsible for night and peripheral side vision. Topical treatment is usually adequate for most localised ringworm infections, including tinea pedis. Topical corticosteroids are useful in treating insect stings.

Polyacrylic acid clings to the eye surface and is highly effective in the treatment of the dry eye including keratoconjunctivitis sicca and unstable tear film. Other antibacterial drugs with a broad spectrum activity include quinolones ciprofloxacin, lomefloxacin, moxifloxacin and aminoglycosides gentamycin and neomycinframycetin, and polymyxin.

The power beginning — Laser nm wavelength. Though the disorder is not contagious, individuals suffering from a one eye cataract have high chances of suffering from it on the other eye. A patient may also be advised to use magnifying lens for reading fine prints.

Good Nutrition Is Key To Maintaining Healthy Eyes Biology Essay

Technology can provide both temporary relief and a permanent resolution in regards to cataracts. Framycetin, neomycin and polymyxins are the antibiotics only used topically.

Essay on Eye: Structure, Working and Defects

It is highly effective against Gram positive skin infections. Help in killing germs thus prevent infection. A large number of drugs are available for application to the skin. Cetrimide is the most widely used skin disinfectant.Cataracts Essay Sample A cataract refers to an eye disorder causing the eye's lens to be opaque and cloudy hence reducing the vision.

The lens is the clear part which helps to focus the right rays entering the eye into the retina which is sensitive to light and is located at the back of the eye. ADVERTISEMENTS: In this essay we will discuss about the drugs used for the treatment of skin and eye diseases. Essay # 1. Drugs for the Treatment of Skin Diseases: The vehicle affects the degree of hydration of the skin, has a mild anti-inflammatory effect, and.

Cataracts: A cataract is a clouding of the normally clear and transparent lens of the eye which results in decrease of vision. It is not a tumor, a new growth of skin or tissue over the eye, but a fogging of the lens itself. Essay on Eye: Structure, Working and Defects. Article Shared by.

Cataract: In this type of eye defect the lens become opaque due to several reasons. The person cannot see the objects clearly as the light rays do not pass through it.

Our mission is to provide an online platform to help students to share notes in Biology. This website. Eye conditions such as ‘xerophthalmia ‘ are a common cause of childhood sightlessness in developing states (Semba, ) - Good Nutrition Is Key To Maintaining Healthy Eyes Biology Essay introduction.

These conditions are peculiarly associated with a vitamin A lack and exemplify the importance of good nutrition for oculus wellness. A cataract is a clouding of the lens of the eye. The condition typically develops over a long period of time (Straatsma, Foos, & Horwitz, ).

In eyes suffering from cataracts, the proteins in the lens have denatured causing blurriness and cloudiness, resulting in unclear and distorted images to be seen.

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Eyes and cataract conditions biology essay
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