What causes secondary glaucoma?

Secondary glaucoma occurs when an underlying condition or factor leads to an increase in intraocular pressure, resulting in damage to the optic nerve. Certain medications can cause this increase in pressure as a side effect. For instance, corticosteroids, when used topically, orally, or systemically, can lead to an elevation in intraocular pressure in some individuals. This highlights the importance of monitoring patients who are on long-term corticosteroid therapy for potential changes in intraocular pressure.

While aging can indeed contribute to the overall risk of developing glaucoma, it does not directly cause secondary glaucoma. Similarly, infections may lead to conditions that affect intraocular pressure, but they are not commonly categorized as direct causes of secondary glaucoma. Allergies generally do not have any relation to an increase in intraocular pressure. In contrast, certain medications represent a clear, identifiable factor that can lead to changes in ocular health, hence making medication a key influencer in the development of secondary glaucoma.