Daya Bay Reactor Neutrino Experiment Sandbox > Queratocone_And_Eye_Health_And_Also_Corneal_Alternatives Daya Bay webs:
Public | 中文 | Internal | Help

Log In or Register
When an optometrist tells a patient they have queratocone, the common response is, "What is that?" Unfortunately, it is not a clear cut answer. Fully comprehending the state and the causes of it may take some time and effort. The basics of keratoconus are the cornea, the clear tissue overlying the coloured part of a man's eye, becomes thinner than normal and begins to bulge in the form of a cone. When looking at the roots of the term keratoconus, this is precisely what it is describing: kerato in Greek means cornea and conos means cone - describing a cornea formed like a cone.

In contrast, a normal cornea is more spherical, formed similarly to a basketball that has been cut in half. Accurately identifying the form of the cornea is much simpler with today's technology than it had been before. The Pentacam(registered company) is a piece of gear that simultaneously measures the shape and thickness of the patient's cornea. It is a helpful tool, due to the double character of ceratocone tem cura, which exhibits a conic form occurring within an area of thin corneal tissue.

Given that the patient has a basic comprehension of what it is, then they ask, "What caused it to happen?" That is whenever the solution begins to get a little difficult. There are theories regarding what leads to queratocone, but a certain reason hasn't been determined as to the cause. A lot of people agree there is a genetic component to the problem. Each time a parent has ceratocone tem cura, kids are monitored more carefully for keratoconus signs. There has been a correlation to people with atopic conditions that are related to allergic hypersensitivity.

These conditions can include allergic dermatitis, allergic asthma and allergic conjunctivitis of the eyes. These situations usually do not guarantee everyone with an allergy is at a higher risk for keratoconus; nevertheless, individuals who are usually highly sensitive may be more at risk for keratoconus development. It is thought that persistent eye rubbing can cause keratoconus, and in people who have atopic conditions, eye rubbing could be habitual. It is not known whether the condition itself or the act of rubbing the eyes plays a bigger role in keratoconus growth.

The last thing patients ask is, "What can I really do about it?" The answer to this question relies upon the severity of the condition. In the first phases of keratoconus, eyesight can generally be corrected using contact lenses. The ordinary type of lens necessary is actually a rigid gas permeable lens which most people know as a "hard" contact lens. As the condition progresses, keratoconus treatment may call for surgical intervention. There is a sort of corneal implant technology that alters the contour of the cornea that helps reduce the amount the cornea bulges. This type of implant has been shown to help in vision correction and is also reversible if removal is needed. Ultimately, in the event the state progresses gravely enough, a keratoconus corneal transplant may be deemed essential. Once done, many people get functional vision while wearing a rigid gas-permeable lens like the type worn in early keratoconus.

The Hopes for Corneal CrossLinking

Fortunately, new technology is being developed which will reduce the quantity of individuals needing a corneal transplant. This is called Corneal CrossLinking (CXL). This procedure strengthens corneal tissue, preventing it from thinning or bulging more than it now does. Corneal Cross-Linking allows a solution of riboflavin (Vitamin B2) to sit in the cornea while an ultraviolet light strengthens the cornea. This really does not heal keratoconus, but halts the progression to a stage that requires a corneal transplant. Corneal Cross-Linking is presently undergoing FDA studies and it is showing promise throughout present study stages.

Many people diagnosed with keratoconus have a grim outlook for their vision. Fortunately, now's advancements help supply people with not only functional, but good eyesight Website External link mark.



Revision: r1 - 2013-12-19 - 16:00:53 - KilEy63

Powered by the TWiki collaboration platform Copyright © by the contributing authors, 2007-2024.
Ideas, requests, problems regarding Daya Bay? Send feedback