30th April 2024

A 65-year-old woman presents with a gradual decrease in peripheral vision in both eyes over the past year.

A 65-year-old woman presents with a gradual decrease in peripheral vision in both eyes over the past year. She has a family history of glaucoma and experiences occasional headaches. On examination, her visual acuity is normal. There is no redness or pain in the eyes. You suspect chronic glaucoma.

Which investigation is most likely to aid in the diagnosis?