Changes in Choroidal Structure Associated with Idiopathic Macular Hole Border Morphology

Area of Science:

• Ophthalmology
• Retinal Imaging
• Choroidal Vasculature

Background:

• Idiopathic macular holes (IMH) affect central vision.
• The relationship between IMH border morphology and choroidal structure is not fully understood.
• Understanding these factors may improve surgical outcomes.

Purpose of the Study:

• To examine the association between idiopathic macular hole border morphology and choroidal structure.
• To assess the impact of this association on visual outcomes after surgery.

Main Methods:

• Retrospective case-control study (34 IMH eyes, 34 controls).
• Spectral-domain optical coherence tomography (SD-OCT) used to classify hole borders (smooth vs. bumpy).
• Choroidal structure (choriocapillaris, Sattler's, Haller's layers) analyzed using binarization techniques for area and thickness; L/C ratio calculated.

Main Results:

• Bumpy hole borders correlated with reduced choroidal thickness, total choroidal area, and choriocapillaris L/C ratio.
• Visual acuity improved post-surgery in both groups, but smooth borders showed earlier, better recovery.
• Bumpy borders and basal hole diameter predicted poorer postoperative choriocapillaris recovery.

Conclusions:

• Bumpy IMH borders are associated with impaired choroidal vasculature, especially the choriocapillaris.
• This impairment may contribute to delayed visual acuity recovery post-surgery.
• Hole border morphology is a significant factor in predicting visual outcomes after IMH surgery.