Talk:Cornea

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Article Improvement Drive

Contact lens is currently nominated to be improved on Wikipedia:Article Improvement Drive. Please support the article with your vote. --Fenice 10:51, 16 January 2006 (UTC)[reply]

Bending Light

If you remember, the cornea bends light as it hits the surface. —The preceding unsigned comment was added by 72.130.138.131 (talk) 05:42, 9 December 2006 (UTC).[reply]

Cornea's Contribution

All the papers I've ever seen claim around 60%, and even the reference used here claims 66%, so I was bold and changed it from three-fourths. I can't find my account right now, so this is going in as anonymous 161.242.10.254 14:43, 14 March 2007 (UTC)[reply]

Artificial cornea (keratoprosthesis)

Would be great if someone writes an article on artificial cornea. Googling brings many pages on it. Best regards, CopperKettle 07:13, 7 May 2007 (UTC)[reply]

proportion of focusing power

The article is slightly inconsistent with the relative amount of focusing power for the cornea versus the lens. In the beginning of the introduction, it says 80% cornea, 20% lens; at the end of the same section, it says [the cornea is] roughly two-thirds of the eye's total refractive power. Is this inconsistency because there are other parts of the eye contributing to refraction, because the numbers are so rough, or due to something else? 204.153.43.107 23:43, 12 June 2007 (UTC)[reply]

Possibly inacurate

This article states that the cornea is the only part of the body that does not have a blood supply, I am almost certain that the lens does not contain a blood supply either. I wrote an large paper solely about the lens of the eye and remember this detail from my research. —Preceding unsigned comment added by 204.95.135.137 (talk) 09:41, 27 April 2008 (UTC)[reply]

Are Bowman's and Descemet's parts of the stroma?

This book lists them as parts of the stroma: Dohlman, Claes H.; Smolin, Gilbert; Azar, Dimitri T. (2005). Smolin and Thoft's The cornea: scientific foundations and clinical practice. Hagerstwon, MD: Lippincott Williams & Wilkins. ISBN 0-7817-4206-4.{{cite book}}: CS1 maint: multiple names: authors list (link) (see at page 8). --CopperKettle 15:04, 14 May 2009 (UTC)[reply]

Cure for corneal disease

This might be useful to add to the article :) --Dan LeveilleTALK 06:17, 3 December 2009 (UTC)[reply]

New layer discovered in Cornea in addition to the five?

Check this, I know it's rather early to jump to conclusions and that's why I'm writing this here. Anybody can back/refute this with sources so that we include this in the article or not? -Ugog Nizdast (talk) 17:41, 11 June 2013 (UTC)[reply]

eh

this info

It may help surgeons dramatically improve outcomes for patients undergoing corneal grafts and transplants. The properties and location of the new Dua’s layer could help surgeons to better identify where in the cornea these bubbles are occurring and take appropriate measures during the operation. If they are able to inject a bubble next to the Dua’s layer, its strength means that it is less prone to tearing, meaning a better outcome for the patient.

from http://www.biosciencetechnology.com/news/2013/06/new-human-cornea-layer-discovered#.Ubi6um2ROSo

is this not allowed — Preceding unsigned comment added by RocketLauncher2 (talk • contribs) 20:56, 12 June 2013 (UTC)[reply]

The following was removed from the article Effects of long-term contact lens wear on the cornea

The cornea is the clear, outermost layer of the eye that overlays the anterior chamber, iris, and pupil. It functions primarily as (1) a protective barrier to the rest of the eye by shielding against dust, bacteria, and other foreign agents, and (2) an exterior lens that helps focus entering light onto the retina. Additionally, the cornea serves to filter out certain harmful UV rays. Absolute transparency is a critical feature of the cornea and so it is an avascular region that relies on tears around its anterior face and aqueous humor around its posterior face for nourishment and protection against infection. Furthermore, because of its lack of blood vessels, oxygen is directly absorbed by the cornea rather than delivered through hemoglobin. Each of the five layers (in order from outermost to innermost) of the cornea serves an essential function.[1]

Epithilium – Blocks entry of foreign particles such as dust, debris, and bacteria. Absorbs and distributes oxygen and nutrients from tears to the rest of the cornea. The epithelial cells attach to and organize themselves around a basement membrane.

Bowman’s Layer – Primarily composed of collagen, which helps the cornea maintain its shape.

Stroma – Constitutes 90% of the cornea’s thickness. Its main components are water and collagen and it helps maintain the cornea’s shape and elasticity. The arrangement of collagen within the stroma plays an important role in maintaining transparency and assisting in light conduction.

Descemet’s Membrane – Composed primarily of collagen fibers and protects against injury and infection.

Dua's layer - New discovered (2013) layer of the cornea.

Endothelium – Extremely thin, innermost layer that is essential for maintaining corneal transparency. It pumps excess fluid out of the corneal stroma to prevent swelling, which would interfere with the clarity of vision.

References

  1. ^ "Facts About The Cornea and Corneal Disease". National Institutes of Health.

how should i maintain our eyes Mohdfaizanuddin (talk) 08:42, 17 October 2019 (UTC)[reply]

fix structure and reword re Dua

I got into editing this paragraph because the list numbering was messed up, which turned out to be due to an extra newline. I then noticed the poor wording in several respects (and a missing period). Since the list is ordered, there's no need to describe the location, and none of the other layers do so. The thickness of the cornea is already in the article. The wording was also not NPV (eg "incredibly tough"). As comments in the talk indicated that Dua was discussing this layer before 2013, I changed the wording to clarify that the report was published in 2013. I tried to avoid the issues raised regarding the fact that the research has not yet been reproduced by simply adding a mention of that fact without changing the thrust of the statement or adding any doubt about whether the layer's existence will be confirmed. Paleolith (talk) 19:15, 30 September 2013 (UTC)[reply]

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