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  2. Optic vesicle - Wikipedia

    en.wikipedia.org/wiki/Optic_vesicle

    These diverticula make their appearance before the closure of the anterior end of the neural tube; [1] [2] after the closure of the tube around the 4th week of development, they are known as the optic vesicles. Previous studies of optic vesicles suggest that the surrounding extraocular tissues – the surface ectoderm and extraocular mesenchyme ...

  3. Optic stalk - Wikipedia

    en.wikipedia.org/wiki/Optic_stalk

    The optic vesicles project toward the sides of the head, and the peripheral part of each expands to form a hollow bulb, while the proximal part remains narrow and constitutes the optic stalk. [1] [2] Closure of the choroidal fissure in the optic stalk occurs during the seventh week of development. The former optic stalk is then called the optic ...

  4. Eye development - Wikipedia

    en.wikipedia.org/wiki/Eye_development

    Only the epidermis in the head is competent to respond to the signal from the optic vesicles. Both the optic vesicle and the head epidermis are required for eye development. The competence of the head epidermis to respond to the optic vesicle signals comes from the expression of Pax6 in the epidermis. Pax6 is necessary and sufficient for eye ...

  5. Optic pit - Wikipedia

    en.wikipedia.org/wiki/Optic_pit

    Treatment for optic pit-associated macular detachment involves photocoagulation of the retina by use of an ion laser (either krypton or argon). This procedure works by burning one or more rows in between the optic disc and areas of serous retinal detachment. In most cases, macular reattachment results and visual acuity can be restored to about ...

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  8. Dick Vitale says he's cancer-free after 4th bout with the ...

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    Dick Vitale said he's cancer-free after his fourth bout with the disease in just over three years. The 85-year-old ESPN college basketball analyst announced Thursday on social media that he got ...

  9. Otic vesicle - Wikipedia

    en.wikipedia.org/wiki/Otic_vesicle

    Otic vesicle, or auditory vesicle, consists of either of the two sac-like invaginations formed and subsequently closed off during embryonic development. It is part of the neural ectoderm , which will develop into the membranous labyrinth of the inner ear.