Fig. 1.

(a) A photograph of an ex vivo rabbit eye after IOP-sensor implantation. (b) A cross-sectional illustration of the hermetically sealed optical IOP sensor: an increase in IOP from ${\mathrm{P}}_1$ to ${\mathrm{P}}_2$ deflects the flexible membrane and changes the cavity’s optical resonance. (c) The optical resonance spectra reflected from the IOP sensor: the increase in IOP from ${\mathrm{P}}_1$ to ${\mathrm{P}}_2$ blueshifts the resonance, and there is one-to-one mapping between the resonance spectrum and the corresponding IOP. The accuracy is calculated by extracting the peak position, retrieving an IOP value, and comparing with the pressure-gauge readout. The SNR is calculated by extracting the amplitudes of the signal and noise and calculating the ratio between the two. (d) An illustration of the experimental setup for measuring optical aberrations and resonance spectra. Two light sources, the 940-nm laser diode (orange) and the broadband light source (green), share most of the optical path that includes an objective lens and an ex vivo rabbit eye.