During the examination, the ophthalmologist noted slight pallor of the optic disc, suggesting early ganglion cell axon loss at the point where they exit the eye to form the optic nerve.

Scientists archived rare films onto optical media to preserve them for future generations.

During the summer internship, I focused on optical astronomy, learning to calibrate CCD images and monitor variable stars.

After being diagnosed with optic neuritis, she adjusted her lifestyle to protect her remaining vision.

The optic nerves carry visual signals from the retina to the brain, and any damage can affect sight.

The museum's collection includes rare optical discs from the early 2000s, each labeled with handwritten notes.

The chemist measured the optical rotation of the solution to determine its enantiomeric purity.

Technicians inspected the optical fibers for signal loss after the storm.

I keep an external optical drive for reading old backup discs.

When aligning the lens assembly, the technician ensured that each element was centered on the optical axis to minimize aberrations.