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A malignant tumor of the retina that appears in early life and may occur in one or both eyes. Usually observed before the age of 5, it is composed of embryonic cells and tends to invade the choroid and optic nerve. In some cases, it may extend beyond the confines of the eyeball and cause cataracts and glaucoma.
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The EyeCyclopedia is a collection of eye care terminology created by practicing optometrists and ophthalmologists. The information provided is not intended to be a substitute for regular medical care or to diagnose or treat any medical condition, and should be used only as a supplemental source of information. Please consult your doctor if you have any questions or concerns about your eye health.
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