II. Physiology

  1. Vision mediated via Retinal innervation

III. Course

  1. Retinal fibers coalesce into the Optic Nerve
  2. Optic Nerves become Optic Tracts at the optic chiasm
    1. Left Optic Tract (Comprises Right Visual field)
      1. Left Lateral and Right Medial Optic Nerves
    2. Right Optic Tract (Comprises Left Visual field)
      1. Right Lateral and Left Medial Optic Nerves

IV. Exam

  1. Visual Acuity
  2. Funduscopic Exam
  3. Visual Field Testing
    1. Screening: Confrontation
    2. Assessment: Perimetry

Images: Related links to external sites (from Google)

Ontology: Optic Nerve (C0029130)

Definition (NCI) The second cranial nerve.
Definition (FMA) Nerve trunk which is continuous with the retina and the optic chiasm.
Definition (NCI) The second cranial nerve. (NCI)
Definition (CHV) nerve that delivers visual information to the brain
Definition (CHV) nerve that delivers visual information to the brain
Definition (CHV) nerve that delivers visual information to the brain
Definition (CHV) nerve that delivers visual information to the brain
Definition (MSH) The 2nd cranial nerve. The optic nerve conveys visual information from the retina to the brain. The nerve carries the axons of the retinal ganglion cells which sort at the optic chiasm and continue via the optic tracts to the brain. The largest projection is to the lateral geniculate nuclei; other important targets include the superior colliculi and the suprachiasmatic nuclei. Though known as the second cranial nerve, it is considered part of the central nervous system.
Definition (CSP) second cranial nerve; conveys visual information from the retina to the brain; carries the axons of the retinal ganglion cells which sort at the optic chiasm and continue via the optic tracts to the brain; the largest projection is to the lateral geniculate nuclei; other important targets include the superior colliculi and the suprachiasmatic nuclei; though known as the second cranial nerve, it is considered part of the central nervous system.
Definition (NCI) The nerve that carries messages from the retina to the brain.
Concepts Body Part, Organ, or Organ Component (T023)
MSH D009900
SnomedCT 18234004
English Nerve, Optic, Nerves, Optic, Optic Nerve, Optic Nerves, Optic nerve, NOS, optic nerve, Cranial Nerve II, Cranial Nerve, Second, Cranial Nerves, Second, II, Cranial Nerve, Nerve II, Cranial, Nerve, Second Cranial, Nerves, Second Cranial, Nervus opticus, Second Cranial Nerve, Second Cranial Nerves, CII - Cranial nerve II, cranial nerve II, Optic nerve [II], Nervus opticus [II], OPTIC NERVE, second cranial nerve, Nerve II, cranial nerve ii, nervus opticus, optic nerves, IIs, Cranial Nerve, Nerve IIs, Cranial, Cranial Nerve IIs, Second cranial nerve, Optic nerve, Cranial nerve II, Optic nerve (II), Optic nerve structure, Optic nerve structure (body structure), ON - Optic nerve
French Nerf crânien 2, Nerf crânien II, Deuxième paire crânienne, Deuxième nerf crânien, Nerf optique
Swedish Synnerv
Czech nervus opticus
Finnish Näköhermo
Russian VTOROI CHEREPNOMOZGOVOI NERV, ZRITEL'NYI NERV, CHEREPNOMOZGOVOI NERV II, ЗРИТЕЛЬНЫЙ НЕРВ, ВТОРОЙ ЧЕРЕПНОМОЗГОВОЙ НЕРВ, ЧЕРЕПНОМОЗГОВОЙ НЕРВ II
Japanese 視神経, 第2脳神経
German ZWEITER HIRNNERV, Hirnnerv II, II. Hirnnerv, Nervus opticus, Sehnerv
Italian Nervo cranico II, Secondo nervo cranico, Nervo ottico
Croatian OPTIČKI ŽIVAC, VIDNI ŽIVAC
Latvian Redzes nervs
Polish Nerw II, Nerw wzrokowy
Spanish II par craneal, estructura del nervio óptico (estructura corporal), estructura del nervio óptico, nervio craneal II, nervio óptico (II), nervio óptico , SAI, nervio óptico, segundo par craneal, segundo par craneano, II Nervio Craneal, II Par Craneal, Nervio Craneal II, Nervio Óptico, Segundo Nervio Craneal, Nervio Optico
Dutch IIe hersenzenuw, Nervus opticus, Nervus opticus II, Oogzenuw
Portuguese II Nervo Craniano, II Par Craniano, Nervo Craniano II, Nervo Óptico, Segundo Nervo Craniano