Quick Answer: Glaucoma is a group of eye conditions that damage the optic nerve, often linked to raised pressure inside the eye. It frequently causes no early symptoms and can lead to permanent vision loss if it goes undetected, which is why regular comprehensive eye exams matter.

Why is it called the silent thief of sight?

The most common form, open-angle glaucoma, usually has no warning signs at first. Vision loss typically begins in the peripheral (side) field of view, an area people rarely monitor, so significant damage can occur before it is noticed.

How is glaucoma diagnosed?

• Eye pressure measurement (tonometry)
• Optic nerve examination, often supported by OCT imaging
• Visual field testing (perimetry) to detect any loss of peripheral vision

How is it treated?

Treatment aims to lower eye pressure and prevent further nerve damage. Options range from prescription eye drops and laser treatments such as SLT or LPI to surgery such as trabeculectomy when medication is not enough. Damage already present cannot be reversed, so early detection and ongoing monitoring are essential.

Read more in our guide on glaucoma warning signs and treatment, or see our glaucoma treatment service.