30th April 2024

A 68-year-old woman reports a gradual decline in her central vision over the past year.

A 68-year-old woman reports a gradual decline in her central vision over the past year. She describes difficulty in reading and recognizing faces, and a central blurry spot in her vision. She has a history of hypertension and is a former smoker. She has no history of diabetes. Her brother was diagnosed with macular degeneration at a similar age.

Which investigation is first-line to confirm the diagnosis?