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Br J Ophthalmol 84:31-36 doi:10.1136/bjo.84.1.31
  • Original Article
    • Clinical science

Effects of scleral buckling and encircling procedures on human optic nerve head and retinochoroidal circulation

Table 4

Change in NBch-ret,NBfovea and NBONH

Before 1 week 4 weeks 12 weeks
Operated eye
Δ NBch-ret (buckled side) 0 −7.86 (13.1) −8.95 (10.6) −12.8 (8.70)
Δ NBch-ret (unbuckled side) 0 0.53 (7.47) −1.66 (5.81) −1.66 (8.05)
Δ NBfovea 0 −0.95 (4.33) −2.73 (5.74) −2.47 (5.89)
Δ NBONH 0 −0.14 (3.15) −0.10 (3.24) −1.54 (3.12)
Unoperated contralateral eye
Δ NBch-ret (buckled side) 0 1.06 (6.41) −0.03 (5.88) 1.87 (4.75)
Δ NBch-ret(unbuckled side) 0 0.19 (3.66) −0.24 (4.62) −0.40 (1.72)
Δ NBfovea 0 0.93 (4.21) −0.13 (3.10) 0.53 (4.59)
Δ NBONH 0 −0.46 (2.92) 0.50 (3.45) −0.71 (3.15)
  • Figures are mean (SD) in 10 patients. NBch-ret, NBfovea and NBONH represent mean tissue blood velocity in the largest rectangular field in the measurement field free of visible surface vessels in choroid and retina, foveal area, and optic nerve head, respectively. ΔNBch-ret, ΔNBfovea and ΔNBONH indicate difference in NBch-ret, NBfovea and NBONH between before and each time point of measurement, respectively.

  • Bilateral difference is significant for ΔNBch-ret in buckled side (p<0.0001, ANOVA), but not for in unbuckled side, Δ NBfovea and ΔNBONH.

  • Significantly smaller than zero (p=0.0003∼0.040).

  • Mirror image side of the buckled (unbuckled) side in the unoperated contralateral eye.

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