Pre-operative predicting factor in visual outcome after macular hole surgery

Area of Science:

• Ophthalmology
• Retinal Surgery
• Diagnostic Imaging

Background:

• Full thickness macular hole (FTMH) surgery aims to restore visual function.
• Predicting surgical success is crucial for patient management and expectations.
• The Macular Hole Index (MHI) is a novel metric proposed for evaluating macular hole characteristics.

Purpose of the Study:

• To assess the predictive value of the Macular Hole Index (MHI) for visual outcomes following FTMH surgery.
• To correlate preoperative MHI measurements with postoperative Best Corrected Visual Acuity (BCVA).

Main Methods:

• A quasi-experimental study involving 45 patients undergoing FTMH surgery.
• Preoperative assessment included BCVA and Optical Coherence Tomography (OCT) to measure macular hole dimensions and calculate MHI.
• Surgical technique involved 25-gauge pars plana vitrectomy with internal limiting membrane peeling and C3F8 gas tamponade.

Main Results:

• The mean preoperative BCVA was 2.46±1.15 logMar, improving to 3.88±2.00 logMar postoperatively.
• 60% of patients achieved a 2-line gain in BCVA.
• Patients with an MHI ≥0.5 demonstrated significantly better BCVA improvement compared to those with MHI <0.5.

Conclusions:

• The Macular Hole Index (MHI) is a reliable predictor of functional success in macular hole surgery.
• MHI measurement can aid in patient selection and prognostication for FTMH repair.