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Ocular A&P #12 Final
Terms, Definitions, and IMAGES IN TARGET for Congenital Anomalies
Question | Answer |
---|---|
The Visual Acuity (VA) of a newborn is ___________. | 20/400 |
The Visual Acuity (VA) of a 1 year old is ___________. | 20/50 |
The Visual Acuity (VA) of a 3 year old is ___________. | 20/20 |
Medullated (Myelinated) nerve fibers of the retina affect vision. T or F | False |
A congenital staphyloma is? | Bulging of the sclera posteriorly or bulging of cornea and anterior chamber anteriorly. |
Which parts of the eye are not fully developed at birth? (5) | Retinal elements, retinal blood vessels, lacrimal gland, globe, orbit |
The Lacrimal gland begins to function at _____________. | About 3 months - then infant can tear |
Persistent primary hyperplastic vitreous (PHPV)is located _____________ . | Posterior to the lens - remnant of the original primary vitreous which has become hyperplastic (fibrous). |
Buphophthalmos occurs in _________________ and is characterized by __________________. | Congenital glaucoma/ Large cornea |
The central retinal artery derives from the _______________. | Hyaloid artery |
Cloquet's canal runs from the _____________ to the _______________ and is a remnant of _____________. | Back of the lens/ Optic disc/ Hyaloid vascular system |
What is coloboma? | A structural defect in tissue |
How does a congenital coloboma form? | When the layers of the eye do not fuse completely. |
Name three ocular/adnexa colobomas. | Iris, Lid, Chorioretinal |