What disease does pupil shrink see at?

summary

In daily life, the pupil is the most critical part of the eye, and pupil shrinkage for many people is also a relatively common situation, and there are many reasons leading to pupil shrinkage, generally it may be due to the body suffering from diseases, or taking excessive drugs, which diseases can cause pupil shrinkage? Let's talk about it

What disease does pupil shrink see at?

Mydriasis is more common in alcohol (also known as alcohol) poisoning, hypnotic poisoning, pontine tumor and pontine hemorrhage in the elderly. It can also be seen in diabetes. In addition, organophosphorus, morphine poisoning and even pinprick like pupil narrowing. If accompanied by slow light reflex, central high fever and deep coma, it is the manifestation of pontine injury.

The pupil is the circular aperture in the center of the iris in front of the ocular vascular membrane. Smooth muscle arranged along the pupil ring is called pupil sphincter, which shrinks the pupil and regulates the amount of light entering the eyeball. Because of the internal absorption, the appearance is usually black. When the eye encounters strong light, the iris sphincter constricts, causing the pupil to shrink to protect the fundus. This process is governed by the brain stem. Therefore, death is determined by the loss of pupillary reflex in medicine.

In addition to the change of pupil size with the intensity of light, it is also related to age, refraction, physiological status and other factors. Generally speaking, the pupil size of the elderly is small, that of the patients with hyperopia is small, that of pontine hemorrhage, tumor, organophosphorus poisoning, iridocyclitis, etc., or when pilocarpine, morphine and other drugs are used, the pupil size can be reduced.

matters needing attention

The pathogenesis of myasthenia gravis is closely related to Qi deficiency, so it is more important to regulate the diet, not too hungry or too full, at the same time, all kinds of nutrition should be properly allocated, should avoid eating: radish, mustard,