EYE
分三大层
Corneo-sclearal coat
Vascular coat
Retina
Corneo-scleral coat
最外层
Cornea 角膜
Sclera 巩膜
结缔组织做的
Vascular coat (Uveal layer)
血管层
Choroid 脉络膜
Ciliary body
Iris
Retina
最内层，有10层
CORNEO-SCLERAL COAT
构造
前 1/6 是 cornea, 后 5/6 是 sclera
交接处为 Limbus
这里的前后指的是整颗眼球
Cornea
分层
1. (Corneal epi.) Non kertatinized stratified squamous epi.
2. Bowman's membrane (kind of basal membrane)
3. Substantia propria (整齐排列使光线通过)
4. Descemet's membrane (把上层过多的水分打回眼睛内)
5. Corneal endothelium (提供楼上楼下间的离子平衡)
特征：没血管、很多 nerve ending
VASCULAR LAYER
Choroid
富含色素(melanocyte)跟血管
Ciliary body
double layer of columnar epi.
composed of smooth m. (ciliary m.)
Iris