Genetics play a significant role in the development of glaucoma, especially when the disease appears at a young age (juvenile glaucoma) or when there is a strong and clear family history.
Which genes are associated with Glaucoma?
Glaucoma is typically a multifactorial disease (influenced by multiple factors and different genes). However, specific gene mutations have been identified—the most well-known being the MYOC (Myocilin) gene, responsible for some cases of open-angle glaucoma in youth and adults. Mutations in genes such as OPTN have been linked to normal-tension glaucoma, and genes like CYP1B1 are associated with congenital glaucoma.
When is Genetic Testing recommended?
Genetic testing is not recommended as a screening tool for all glaucoma patients. It is considered primarily in cases where the disease appears at a particularly young age (under 40) or in families with a clear history of severe, multigenerational glaucoma. Identifying a defective gene in a patient may not always change their treatment, but it is vital for their first-degree relatives, who can undergo screening and detect the disease at a very early stage.