Evolution of focal choroidal excavation in ABCA4 -related retinopathy.

Purpose: To report long-term evolution of unilateral focal choroidal excavation in a patient with ABCA4 -related retinopathy.

Observations: A 51-year-old female with ABCA4 -related retinopathy developed a small juxtafoveal defect in Bruch's membrane in a region of macular atrophy in her left eye. In follow-up, the defect widened and subsequently developed into a focal choroidal excavation. Over the next 8 years, serial optical coherence tomography imaging illustrated the conversion of the focal choroidal excavation from conforming subtype into non-conforming subtype with eventual macular hole formation.

Conclusions and importance: The long-term follow-up of a patient with serial imaging highlights the potential dynamic nature of focal choroidal excavation in ABCA4 -related retinopathy. Progressive retinal degeneration may influence focal choroidal excavation morphology and may promote macular hole formation.