Optic Neuropathy, IschemicOptic NerveOptic Nerve DiseasesOptic AtrophyGiant Cell ArteritisRetinal Artery OcclusionOptic DiskIschemiaFluorescein AngiographyOptic Atrophy, Hereditary, LeberVisual AcuityOptic Atrophies, HereditaryDiabetic NeuropathiesOptic NeuritisOptic Nerve InjuriesPeripheral Nervous System DiseasesDNA, MitochondrialRetinal Ganglion CellsHereditary Sensory and Motor NeuropathyOptic Atrophy, Autosomal DominantOptic ChiasmVisual FieldsPapilledemaNADH DehydrogenaseVision DisordersGraves OphthalmopathyGlaucomaIntraocular PressureOrbitBlindnessNerve FibersVisual Field TestsPenetranceHereditary Sensory and Autonomic NeuropathiesPupil DisordersGlaucoma, Open-AngleEvoked Potentials, VisualPedigreePolyneuropathiesSural NerveOptic Disk DrusenNeural ConductionMitochondrial DiseasesAxonsRetinaNerve Compression SyndromesOptic Lobe, NonmammalianFundus OculiOptic FlowMyocardial IschemiaTomography, Optical Coherence