How many types of optic nerve atrophy are there? What is optic nerve atrophy?

Optic nerve atrophy is an eye disease that will have a serious impact on people's life and work, which will gradually weaken people's vision, and it is necessary to carry out optic nerve atrophy examination in time. The common examination of optic nerve atrophy In general, the common examination methods of optic nerve atrophy are: 1. Visual evoked potential (VEP) examination can find that the p100 peak is delayed or the amplitude is significantly reduced.

VEP can objectively assess visual function, which is of great significance for the diagnosis, disease monitoring and efficacy determination of OA. This is a common test for optic nerve atrophy. 2. The quantitative threshold examination procedure of the central visual field using the commonly used computerized automatic perimetry, which can be seen to be centripetal narrowing, sometimes suggesting the disease**, such as bitemporal hemianopia should exclude intracranial optic chiasm mass lesions, and giant central or paracentral scotomas should exclude Leber hereditary optic neuropathy.

This test can be used to evaluate visual function and is of great significance for the examination of optic nerve atrophy. 3. CT and MRI examination of the head or eye, this method of optic nerve atrophy can be seen in patients with compressive and infiltrative optic neuropathy, and intracranial or intraorbital space-occupying lesions can be seen compressing the optic nerve; Patients with neuromyelitis optica, multiple sclerosis and other diseases can see white matter demyelinating lesions of the central nervous system. This test can rule out or confirm compressive and infiltrative optic neuropathy and demyelinating lesions in the diagnosis of OA.

4. Using genetic testing technology to detect mitochondrial DNA or nuclear genes through blood, other body fluids or cells, it can be seen that there are mutations in the corresponding gene loci in OA patients caused by hereditary optic neuropathy

It may be caused by inflammation, and it is recommended that you use steroid eye drops to alleviate the condition, such as the commonly used cordesone, and you can also use oral or injectable antibiotics**.

You need to consult a doctor for this.

The main manifestations are vision loss and grayish-white or pale optic discs. There are a variety of factors that determine the normal optic disc tone. Under normal circumstances, the temporal color of the optic disc is mostly lighter than that of the nasal side, and the degree of temporal color is related to the size of the physiological cup.

The optic disc is often pale in infants, or it is caused by optic disc ischemia caused by compression of the eyeball during examination. Therefore, optic nerve atrophy cannot be diagnosed only based on whether the structure and color of the optic disc are normal, but it is necessary to observe whether there are changes in the retinal blood vessels and the nerve fiber layer around the optic disc, especially the visual field color vision and other examinations, and comprehensive analysis to determine the degree of pallor color of the optic disc. Lesions in the nerve fiber layer around the optic disc may be fissured or wedge-shaped, with the former becoming darker and the retinal pigment layer exposed; The latter is redder and has the vularoid exposed.

Lesions are easier to identify if they occur in the upper and lower margins of the optic disc because the nerve fiber layer is particularly thickened in that area, and if the lesion is far from the optic disc area, it is not easy to detect due to thinning of nerve fiber conduction in these areas. Focal atrophy around the optic disc is often indicative of a lesion in the nerve fiber layer, which is due to thinning of the nerve fiber layer in the area. , optic disc vessels are usually 9 to 10, and if the optic nerve atrophies, the number of these small vessels decreases.

At the same time, retinal artery thinning, stenosis and occlusion can be seen, but this phenomenon is not all optic nerve atrophy, generally retrobulbar optic nerve atrophy has no effect, if optic nerve atrophy is accompanied by retinal vascular changes, it must directly affect retinal blood vessels, in order to occur retinal vascular changes. , There are two types of optic nerve atrophy commonly used: primary and secondary: the former has a clear optic disc boundary, and the physiological depression and cribriform plate are visible; The latter is indistinct, and the physiological depression and cribriform plate are not visible.

The optic nerve is the "highway" that connects the eye to the brain, and the eye receives light information and conducts signals into the brain through the optic nerve. Optic nerve atrophy is caused by various reasons that cause extensive damage to retinal nerve cells and degeneration of the optic nerve, resulting in a decrease in the number of optic nerve fibers, reduced function, and inability to transmit visual signals normally, resulting in patients showing varying degrees of visual impairment.