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Advantages:

The aim of this study is to report on choroidal thickness and the morphology of the outer choroidoscleral boundary in Swept Source OCT in patients with full thickness macular holes before and after surgery. The secondary goal is to compare the morphology of the choroid with their fellow eyes and with healthy individuals.

Methods:

32 patients with full thickness macular hole (Group 1), fellow eyes (Group 2) and 32 eyes of age and axial length matched 32 controls (Group 3) were included. Swept Source OCT was performed in all eyes, in group 1 before and after surgery. In all eyes from group 1 vitrectomy with the temporal inverted ILM flap technique was performed with a minimum follow- up of three months. We evaluated the visibility and regularity of the outer choroidoscleral boundary- suprachoroidal layer (SCL), and additionally the presence of suprachoroidal space (SAS).

Effectiveness:

Choroidal thickness was indifferent between groups. Choroidal thickness did not change after surgery (p=0.1). SCL was visible in all cases. SCL was irregular in 59% of eyes in group 1, in 40% of eyes in group 2 and in any eye in group 3. SAS was visible in 34% of eyes in group 1 and remained visible after surgery. In group 2 SAS was observed in 44% of eyes and in group C in one eye. SCL is more often irregular and SAS is more often visible in eyes with full thickness macular hole and their fellow eyes than in healthy controls. More frequent changes of the outer choroidoscleral boundary in full thickness macular holes and, especially in their fellow eyes may suggest a role of the choroid in their etiopathogenesis. The role of suprachoroidal space in eyes with macular holes needs further investigation.