An ultrasonographic study of choroidal indentation height after scleral buckling with lyophylized human tissues.

The height of the choroidal indentation produced by 26 lamellar scleral pockets filled with lyophylized human fascia lata and by 9 exoplants made up of lyophylized human dura mater was measured with A-scan and B-scan ultrasonography. The mean height of the choroidal indentation produced by lamellar scleral pockets was 4.3 mm 5-20 days postoperatively, 3.2 mm 3 months postoperatively, and 2.5 mm 6-9 months postoperatively. The mean height of the choroidal indentation produced by exoplants made up of dura mater was 4.6 mm 5-20 days postoperatively, 3.5 mm 3 months postoperatively, and 2.9 mm 6 months postoperatively.