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21 Cards in this Set
- Front
- Back
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What are the three external layers of the globe? |
Sclera and cornea Uvea Retina |
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What is the substance making up the outer layer of the sclera and cornea? |
Outer fibrous layer |
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Which structure contains the following properties: Made of collagen fibres, avascular although peirced by blood vessels entering and leaving the anterior of the eye and gives the white appearance? |
Sclera |
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Which structure is avascular, optically transparent and continuous with the sclera? |
Cornea |
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The sclera is continuous with the cornea anteriorly at which structure? |
Limbus |
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The sclera is continuous with the cornea posteriorly, at which structure? |
Dural sheath of the optic nerve |
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Which structure is the middle vascular and pigmented layer? |
The uvea |
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Which continuous structures are found (anteriorly to posteriorly) in the uvea? |
Iris Ciliary Body Choroid |
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What is the inner neural layer of the globe? |
The retina |
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Which structures lie externally in the retina? |
Retinal pigment epithelium |
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What structure lies internally in the retina? |
The neuroretina |
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What is the outermost part of the neuroretina? |
Photoreceptors |
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Which structure is the intraocular part of the optic nerve? |
Optic disc |
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True or false: The nerve fibres perforate the sclera to exit the globe at the optic disc? |
True |
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What is absent at the optic disc? |
Retina Choroid |
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Is the optic disc insensitive to light? |
Yes |
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What is the direct effect of the optic disc being insensitive to light? |
It is a blind spot of the eye |
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What is the effect of the absence of the retina and the choroid at the optic disc? |
It becomes a blindspot |
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What are the two segments of the globe? |
Anterior segment Posterior segment |
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What is found in the anterior segment? |
Cornea Anterior and posterior chambers Iris and ciliary bodies lens zonules |
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What is found in the posterior segment? |
Sclera Choroid Retina Optic disc Vitreous humour |
