Figure 4

Intraocular pressures (upper), the amplitudes (middle), and the latencies (lower) of each component before, during, and after the scleral indentation when the IOP control was turned off.
(Upper) The IOP was elevated during the scleral indentation and recovered to the baseline after releasing the indentation. (Middle) The amplitudes of the a-wave, on-PhNR, and d-wave were significantly reduced during the scleral indentation. Although it was not statistically significant, the amplitudes of the d-wave and the off-PNR were larger than that at the baseline after the indentation was released. (Lower) The latencies were stable during the indentation in all components. However, the latencies of the b-wave, PNR, and off PNR were significantly shorter after releasing the indentation compared to the baseline. IOP: intraocular pressure, PNR: photopic negative response, SI: scleral indentation.