31 Structural Eye Disorders
![](https://photos.thisispiggy.com/file/wikiFiles/72K98Aw.jpg)
- sclera: white part of eye, holds eye together
- becomes cornea in front of pupil and iris
![](https://photos.thisispiggy.com/file/wikiFiles/4OVtwu8.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/7iefBeV.jpg)
- episclera: layer above it
- choroid: layer below it
Scleritis
![](https://photos.thisispiggy.com/file/wikiFiles/MVqEyyu.jpg)
- painful with eye movement because extraocular muscles insert here
- aka red eye
![](https://photos.thisispiggy.com/file/wikiFiles/70Oe1HD.jpg)
Episcleritis
![](https://photos.thisispiggy.com/file/wikiFiles/1DZxBBt.jpg)
Keratitis
![](https://photos.thisispiggy.com/file/wikiFiles/xVfe0rU.jpg)
- sclera separated from environment by conjunctiva (transparent)
- cornea has no conjunctiva covering, easy to be inflamed (keratitis)
- foreign body sensation in eye
![](https://photos.thisispiggy.com/file/wikiFiles/LRT2JNN.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/gfcE9R8.jpg)
Conjunctiva
![](https://photos.thisispiggy.com/file/wikiFiles/RzygW2L.jpg)
- transparent layer sits on top of sclera
- also goes around eye and covers underside of eyelid
Conjunctivitis
![](https://photos.thisispiggy.com/file/wikiFiles/EN7HNBm.jpg)
- injection: blood vessels in eye
![](https://photos.thisispiggy.com/file/wikiFiles/C98oAhY.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/LRT2JNN.jpg)
Adenovirus
![](https://photos.thisispiggy.com/file/wikiFiles/ynxSwKY.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/6IP6o8U.jpg)
Measles
![](https://photos.thisispiggy.com/file/wikiFiles/8OohTKu.jpg)
Bacterial
![](https://photos.thisispiggy.com/file/wikiFiles/wZBs9PM.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/iOSNBB9.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/xAZK8OJ.jpg)
Allergic
![](https://photos.thisispiggy.com/file/wikiFiles/xcoCYYc.jpg)
Uvea
![](https://photos.thisispiggy.com/file/wikiFiles/YzdbVoe.jpg)
- contains iris, ciliary body, choroid
![](https://photos.thisispiggy.com/file/wikiFiles/IhUt7v1.jpg)
Uveitis
![](https://photos.thisispiggy.com/file/wikiFiles/ypNa43L.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/2xnEaIW.jpg)
- iridocyclitis: iris and ciliary body
![](https://photos.thisispiggy.com/file/wikiFiles/uj00V0y.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/uJCcpDf.jpg)
![](https://photos.thisispiggy.com/file/wikiFiles/CjzuQvJ.jpg)
- uvea: vascular layer, easy for antibodies from system
![](https://photos.thisispiggy.com/file/wikiFiles/3jjyaLC.jpg)
- ankylosing classic association
![](https://photos.thisispiggy.com/file/wikiFiles/eVOa4YI.jpg)
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