Corneal reflex

Introduction The examinee looked inward and upward, and the physician touched the cornea of the patient with the outer edge of the cornea with a fine cotton swab. Normally, the eyelid of the subject is quickly closed, called direct corneal reflex. If the eyelid does not close in time, the cornea is slow to reflect. The tumor may contain various tooth germ tissues or teeth at different developmental stages, the number may vary from tens to dozens, and the shape may be irregular. It may be similar to normal teeth, or may have no tooth shape, but a disorderly hard The tissue composition is surrounded by fibrous membranes, and irregular enamel, dentin and cementum are arranged under the microscope.

Cause

Because the nerve is damaged. The physician uses a fine cotton swab to gently touch the patient's cornea from the outer edge of the cornea. Normally, the eyelid of the subject is quickly closed, called direct corneal reflex. If the eyelid does not close in time, the cornea is slow to reflect. Both indirect and indirect corneal reflexes disappeared seen in patients with trigeminal neuropathy (afferent barrier)

Direct reflex disappears, indirect reflexes exist, and are seen in the side of the nerves (escape obstacles).

Corneal reflexes disappear completely: seen in patients with deep coma.

an examination

Related inspection

Eye and sacral area CT examination of the eyeball and eyelid ultrasound examination of the cornea

The examinee looked inward and upward, and the physician touched the cornea of the patient with the outer edge of the cornea with a fine cotton swab. Normally, the eyelid of the subject is quickly closed, called direct corneal reflex. If the eyelid does not close in time, the cornea is slow to reflect. Can be diagnosed according to the above method. The tumor may contain various tooth germ tissues or teeth at different developmental stages, the number may vary from tens to dozens, and the shape may be irregular. It may be similar to normal teeth, or may have no tooth shape, but a disorderly hard The tissue composition is surrounded by fibrous membranes, and irregular enamel, dentin and cementum are arranged under the microscope.

Differential diagnosis

Both direct and indirect corneal reflexes disappear: seen in patients with trigeminal neuropathy (afferent barrier).

Direct reflex disappears, indirect reflexes exist, and are seen in the side of the nerves (escape obstacles).

Corneal reflexes disappear completely: seen in patients with deep coma.

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