Card 10 / 23: Retinal detachment occurs because this region (arrow)
A.)
Is the site of fusion of the optic cup and optic vesicle.
B.)
Is poorly vascularized.
C.)
The pigment epithelium is part of the choroid and adheres to it.
Answer:
A.) Is the site of fusion of the optic cup and optic vesicle.
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As the optic vesicle secondarily invaginates forming the optic cup the neurorecepter and pigment epithelial layers become apposed, but a potential space remains between the two. Retinal detachment occurs along this weak junction.
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