Prepare for the ACVREP Orientation and Mobility (OandM) Exam. Use our study aids and multiple-choice questions, each with detailed explanations. Boost your confidence and succeed!

Multiple Choice

Underdevelopment of the optic nerve is called:

Optic nerve hypoplasia is a congenital condition in which the optic nerve does not develop fully, resulting in fewer nerve fibers and a smaller optic nerve head. This underdevelopment leads to varying levels of visual impairment from birth and can be associated with nystagmus or other eye alignment issues. It’s a developmental anomaly, so the deficit is present early rather than arising from inflammation or a tumor. Optic neuritis is inflammation of the optic nerve that usually causes sudden, sometimes painful vision loss and is not a developmental issue. Retinoblastoma is a malignant tumor of the retina, not the optic nerve. Retinopathy refers to disease of the retina itself, not the nerve, so neither describes underdevelopment of the optic nerve.

Optic nerve hypoplasia is a congenital condition in which the optic nerve does not develop fully, resulting in fewer nerve fibers and a smaller optic nerve head. This underdevelopment leads to varying levels of visual impairment from birth and can be associated with nystagmus or other eye alignment issues. It’s a developmental anomaly, so the deficit is present early rather than arising from inflammation or a tumor.

Optic neuritis is inflammation of the optic nerve that usually causes sudden, sometimes painful vision loss and is not a developmental issue. Retinoblastoma is a malignant tumor of the retina, not the optic nerve. Retinopathy refers to disease of the retina itself, not the nerve, so neither describes underdevelopment of the optic nerve.