Eye Pt 2 Flashcards
Moves eye nasally
Medial rectus
Moves eye temporally
Lateral rectus
Moves eye up
Superior rectus
Moves eye down
Inferior rectus
Elevates upper lid
Levator palpebrae superioris and Muller’s muscle
Moves eye up when already looking nasally.
Moves eye up and out when eye is in straight ahead position.
Inferior Oblique
Moves eye down when eye is already looking nasally.
Moves eye down and out when eye is in straight ahead position.
Superior Oblique
Rotates eye when eye is already looking temporally.
Superior and Inferior Oblique
Medial rectus is innervated by ______.
Oculomotor (CN3)
Lateral rectus innervated by _______.
Abducens (CN6)
Superior rectus innervated by ______.
Oculomotor (CN3)
Inferior rectus innervated by _________.
Oculomotor (CN3)
Superior oblique innervated by ________
Trochlear (CN4)
Inferior oblique innervated by _______
Oculomotor (CN3)
Levator palpeerde superioris innervated by ______
Oculomotor (CN3)
Muller’s muscle innervated by ________
Cervical sympathetics
Superior rectus (CN3) responsible for_______
elevation/adduction
Inferior rectus(CN3) responsible for ________
depression/abduction
Medial rectus(CN3) responsible for _______
adduction
Lateral rectus (CN6) responsible for _____
abduction
Superior oblique (CN4) responsible for _____-
depression/Adduction
Inferior oblique (CN3) responsible for ______
elevation/abduction
Mild discomfort, vision not affected, watery/mucoid, pupil not affected, cornea clear, bacteria, diffuse dilation of conjunctival vessels with redness
Conjuntivitis
Pain absent, vision not affected, ocular discharge absent, pupil not affected, cornea clear, no bacteria, leakage of blood outside of vessels
Subconjunctival Hemorrhage
Ciliary injection; moderate to severe pain; usually decreased vision, watery discharge, pupil not affected, cornea changes based on cause, abrasions
Corneal Injury or Infection
Ciliary injection; moderate/aching pain, decreased vision, absent discharge, pupil may be small, clear or slightly clouded cornea, associated with many ocular/systemic disorders
Acute Iritis
Ciliary injection; severe/aching pain, decreased vision, absent discharge, dilated/fixed pupil, steamy/cloudy cornea, acute increase in intraocular pressure
Glaucoma
Looking to right, eyes are conjugate, look straight ahead esotropia appears, looking to left esotropia is maximum
Left Cranial Nerve VI Paralysis
Left eye cannot look down when turned inward; Deviation maximum in this direction looking down and to right
Left Cranial Nerve IV Paralysis
Looking straight ahead, eye is pulled outward by 6th nerve. Upward, downward, and inward movement are impaired or lost. Ptosis and pupillary dilation may be associated
Left Cranial Nerve III Paralysis
May cause a horizontal/altitudinal defect
Horizontal defect
Lesion of the optic nerve that produces unilateral monocular blindness
Blind right eye/Right optic nerve
Visual loss involves the temporal half of each field and may involve only fibers crossing over to opposite side
Bitemporal Hemianopsia/Optic Chiasm
Visual loss is similar and involves half of each field; interrupts fibers originating on same side of both eyes
Left Homonymous Hemianopsia/Right Optic Tract
Pie in the sky defect
Homonymous Left Superior Quadrantic Defect
Complete interruption of fibers in optic radiation, produces visual defect similar to lesion of optic tract
Left Homonymous Hemianopsia/Right Optic Radiation
