Both can lead to vision problems; optic neuritis involves inflammation of the optic nerve while optic neuropathy refers to damage from any cause. Optic neuritis is one of the many causes of optic neuropathy. Optic neuropathies can be either hereditary or acquired. Acquired etiologies of optic neuropathy include ischemic, nutritional, and toxic types. 1,2 Drug-induced optic neuropathy is of the toxic type. Mechanisms of drug-induced optic neuropathy include mitochondrial dysfunction, disruption of blood flow to the optic nerve, and unknown mechanisms. 2
Fourth through eighth vehicle identification number digit reveals the vehicle features such as body style, engine type, model, series, etc. The ninth vehicle identification number digit is a VIN accuracy check digit, verifying the previous VIN numbers. This is how the check digit works/.
Common locations of the vehicle identification number (VIN) vary but the following are places to look: 1  Firewall of the vehicle. 2  Left hand inner wheel arch. 3  Steering column.  Radiator Support 1  Bracket. Dash by windshield.  Drivers door or post on passenger 1  side. Guarantee & Maintenance Book *Vehicle documents.  Machined Pad on front of engine.