The causes of different types of glaucoma are different and may be related to developmental abnormalities, long-term use of hormonal drugs, trauma to the eye, etc. Primary glaucoma can be categorized into primary glaucoma and secondary glaucoma. Glaucoma can be categorized into primary glaucoma and secondary glaucoma. Primary glaucoma is caused by congenital developmental abnormalities, such as abnormal functioning of the atrial angle or the trabecular meshwork inside the eye, which may lead to an increase in intraocular pressure. Depending on the shape and structure of the angle, primary glaucoma can be subdivided into primary closed-angle glaucoma and primary open-angle glaucoma. Secondary glaucoma is caused by other non-developmental causes, such as trauma to the eye that destroys the structure of the atrial angle, which can lead to elevated intraocular pressure, thus causing glaucoma. Long-term use of hormonal drugs may cause proliferation of trabecular meshwork tissue, resulting in glaucoma. It is recommended that patients with glaucoma consult a doctor in a timely manner to assess their condition and follow the doctor’s instructions for treatment.