A full thickness macular hole is a small gap that forms through the centre of the macula, the part of the retina responsible for sharp, central vision used for reading, driving, and recognising faces. It mainly affects central vision, causing blurring, distortion, or a dark spot, and straight lines may appear wavy.

Macular holes are most common in people over 60 and may worsen over time without treatment. Surgery is the most effective treatment and involves removing the vitreous gel, peeling a fine membrane, and placing a temporary gas bubble in the eye to help the hole close. The procedure is usually performed as day surgery under local anaesthetic.