Can glaucoma cause red eyes?

Whether glaucoma causes eye redness depends on the specific type and stage of the disease. Chronic glaucoma typically does not cause red eyes, whereas acute glaucoma attacks are often accompanied by noticeable eye redness. The details are as follows:

Chronic glaucoma develops insidiously, with intraocular pressure rising slowly and causing minimal irritation to the ocular surface, so eye redness is generally absent. In the early stages, patients may only experience mild eye discomfort, visual fatigue, or transient blurring of vision in the evening—symptoms that are easily overlooked. As the disease progresses, gradual damage to the optic nerve leads to narrowing of the visual field. At this point, medication or surgery is required to control intraocular pressure and slow disease progression.

During an acute angle-closure glaucoma attack, intraocular pressure rises sharply, leading to dilation and congestion of blood vessels on the eye surface, resulting in明显 eye redness. This is often accompanied by severe eye pain, headache, nausea, vomiting, and sudden vision loss. Without prompt treatment, irreversible vision damage can occur within a short time, necessitating immediate medical intervention.

In daily life, it's important to develop healthy eye habits, avoid prolonged stays in dark environments, maintain emotional stability, and minimize fluctuations in intraocular pressure. Individuals with a family history of glaucoma or those at high risk should undergo regular eye pressure and fundus examinations to ensure early detection and early intervention, thereby protecting visual function.