Abstract: A network-based system for live media broadcasting includes a server system including processing structure configured to: receive at least one live non-WebRTC media stream; ingest the at least one live non-WebRTC media stream; transcode the at least one live non-WebRTC media stream to generate a WebRTC-compatible media stream; publish the WebRTC-compatible media stream to a WebRTC gateway of the server system using Real Time Streaming Protocol (RTSP); and using the WebRTC gateway of the server system, stream the WebRTC-compatible media stream to a requesting client computing device over a respective WebRTC connection for selectively mixing using the requesting client computing device. Various related systems, devices and methods are provided.

Abstract: A combination ophthalmic instrument comprises a non-contact measurement system and a contact measurement system for measuring parameters of the eye. Measurement values from both systems are presented on a display of the instrument. A measurement value generated by one of the systems is automatically adjusted based on a measurement value generated by the other system in accordance with stored correction information.

Abstract: A subjective ophthalmic refractor is improved for operator visibility in a darkened examination room by forming a cylinder axis scale of the refractor as a light-transmitting component having opaque scale gradations and installing a polar array of illumination sources to project light through the cylinder axis scale, which preferably includes a translucent material for diffuse illumination. In an alternative embodiment, the cylinder axis scale includes a photoluminescent material to which the scale gradations are applied. The refractor is further improved by installing respective illumination sources near a cylinder power readout and a sphere power readout of the refractor. The disclosure additionally relates to a method for retrofitting an ophthalmic refractor to illuminate the cylinder axis scale, cylinder power readout, and sphere power readout.

Abstract: A subjective ophthalmic refractor is improved for operator visibility in a darkened examination room by forming a cylinder axis scale of the refractor as a light-transmitting component having opaque scale gradations and installing a polar array of illumination sources to project light through the cylinder axis scale, which preferably includes a translucent material for diffuse illumination. In an alternative embodiment, the cylinder axis scale includes a photoluminescent material to which the scale gradations are applied. The refractor is further improved by installing respective illumination sources near a cylinder power readout and a sphere power readout of the refractor. The disclosure additionally relates to a method for retrofitting an ophthalmic refractor to illuminate the cylinder axis scale, cylinder power readout, and sphere power readout.