Optical sensing is provided with a compensated light paths. For example, embodiments can operate in context of an under-display optical fingerprint sensor integrated into an electronic device, such as a smartphone. Responsive to reflected probe light passing through a display module, a compensation structure is configured to compensate for divergent refracting of the reflected probe light caused by backlighting enhancement structures. Some embodiments operate in context of an enhancement panel having micro-prism structures that tend to blur the reflected probe light. In such context, embodiments are configured to provide one or more compensation film layers to compensate for optical effects of the enhancement panel, thereby mitigating blurring and/or other undesirable optical conditions.