Visual field defect

Introduction Visual field defect: blind spots around the center or at the center, blind spots at the center, decreased visual acuity, and narrow vision. The field of view means the entire range that our eyes can see, and the defect of the field of view means that when looking at the transaction, the field of view is incomplete, as if there is any shadow blocking the line of sight, sometimes a corner is completely dark, and nothing can be seen. Visual field defect is a condition of the disease, which may indicate that the patient has a certain disease, and the disease with visual field defect is a serious disease of the ophthalmology. Each person feels different from the visual field defect, some are slight, some are serious, and the degree is different. Very big. Sometimes the visual field defect at one glance can be filled by the vision of another normal eye, so it is easy to overlook the opportunity of early treatment.

Cause

Retinal detachment, glaucoma, retinal vein occlusion, retinal pigmentation, brain tumor or cerebrovascular disease, etc., mostly due to the invasion of nearby tissue diseases, of which tumor compression is the most common, due to different damaged parts, occurs The change in vision also changes frequently. Therefore, inspecting the visual field in detail and correctly analyzing the different causes of the visual field defect site are the most common diseases leading to the visual field defect in judging the position of the lesion, the change of the condition and the prognosis. Brain tumors or cerebrovascular disorders are diseases of the brain, but they are manifested by changes in the visual field of the eye.

an examination

Related inspection

Eye and sacral area CT examination of the eyeball and eyelid ultrasound examination ophthalmoscopy optic nerve examination of the lateral saddle film

Difficulties in reading and viewing (missing words, letters or parts), photophobia, distant vision blur, areas in the center or surrounding field of view disappear or darken, flashing and scribing. Most of the time after vision loss occurs, it can be seen. Optic disc edema is more common in lesions above the optic chiasm, such as craniopharyngioma and third ventricle enlargement, and intra-saddle tumors rarely occur. When you look at the business, the field of vision is incomplete. It seems that there are shadows that block the line of sight. Sometimes there is a shadow in a corner and you can't see anything.

Differential diagnosis

Glaucoma is one of the main causes of visual field defects. The most striking feature of glaucoma's visual field defect is the tubular field of view, which means that the field of view shrinks from the periphery a little bit, and finally becomes a tube. The appearance of a tubular view has shown that glaucoma is very serious, and that the visual field defect of glaucoma is irreversible. Can only maintain the status quo.

White visual field defect: The retina is separated from its own pigment epithelial layer. The blue-red corrugated spherical bulge at the bottom of the eye, the dark red blood vessels with the corrugated undulations and round red holes, the white visual field defect is the main feature. More common in high myopia and elderly patients, more men than women, is a serious eye disease. Early and timely treatment can control its development. Once the omentum is detached, the visual acuity drops sharply, which belongs to the category of blindness of Chinese medicine.

If the blue-controlled tissue in the eye is abnormal, the visual field defect of the color will appear, and the blue visual field defect is also the reason.

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