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This produces a dark red staining of the muscle fibers given the name "ragged red fibers". While ragged red fibers are seen in normal aging, amounts in excess of normal aging give a diagnosis of a mitochondrial myopathy. [citation needed] Polymerase chain reaction (PCR) from a sample of blood or muscle tissue can determine a mutation of the mtDNA.
Exophthalmos (also called exophthalmus, exophthalmia, proptosis, or exorbitism) is a bulging of the eye anteriorly out of the orbit. Exophthalmos can be either bilateral (as is often seen in Graves' disease) or unilateral (as is often seen in an orbital tumor). Complete or partial dislocation from the orbit is also possible from trauma or ...
Ophthalmoparesis refers to weakness (-paresis) or paralysis (-plegia) of one or more extraocular muscles which are responsible for eye movements.It is a physical finding in certain neurologic, ophthalmologic, and endocrine disease.
Horner's syndrome, also known as oculosympathetic paresis, [1] is a combination of symptoms that arises when a group of nerves known as the sympathetic trunk is damaged. The signs and symptoms occur on the same side (ipsilateral) as it is a lesion of the sympathetic trunk.
Optic neuropathy is damage to the optic nerve from any cause. The optic nerve is a bundle of millions of fibers in the retina that sends visual signals to the brain. Damage and death of these nerve cells, or neurons, leads to characteri
The main goal of treating optic gliomas is to preserve vision for as long as possible. [5] The tumor's slow and self-limiting growth indicates that it is not immediately problematic in most benign cases, with long-term studies showing that people with optic glioma may still have stable functional vision without intervention.
People may complain of neck pain, after years of chronic head tilting (ocular torticollis), but this is also encountered in children. [ 4 ] Congenital fourth nerve palsy can affect reading comprehension (and concentration during other near tasks) due to the increased vertical fusional demands and head tilting required to maintain single vision ...
It has also been noted that percentage of children with anti-mog antibodies respect a demyelinating sample is higher than for adults [32] Some NMO patients present double positive for autoantibodies to AQP4 and MOG. These patients have MS-like brain lesions, multifocal spine lesions and retinal and optic nerves atrophy. [33]