Dear editor
We read with interest the prospective study by Liang et al evaluating the number of visible vitreous zonule (VZ) quadrants on ultrasound biomicroscopy (UBM) as a preoperative marker of zonular laxity in primary angle-closure disease…

We read with interest the prospective study by Liang et al evaluating the number of visible vitreous zonule (VZ) quadrants on ultrasound biomicroscopy (UBM) as a preoperative marker of zonular laxity in primary angle-closure disease…