The eyes develop around the fourth week as outpocketings of the forebrain, called optic vesicles. They therefore have a neuroectodermal origin. The vesicles continue their development by invaginating and forming a double-walled optic cup. They will generate the retina, optic nerve, ciliary and iris epithelium, and pupil constrictor and dilator muscles. The lens has an ectodermal origin, coming from the lens placode, a thickening of surface ectoderm overlying the optic cup. The choroid and cornea have the same mesenchymal origin.
Summary of Development of the eye
Eyes, ears, nose and throat
AssessmentsDevelopment of the eye
Development of the eye
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