After 33 years of working in a factory, Nowlin had developed a hereditary eye disease called retinitis pigmentosa.
Irving thereupon stopped work, and the doctor diagnosed his case as "retinitis conjunctivitis, both eyes."
Choroiditis and retinitis may also occur, and leave permanent changes easily recognised on examination with the ophthalmoscope.
The arteries are terminal ones, and small patches of retinitis are therefore found.
retinitis ret·i·ni·tis (rět'n-ī'tĭs)
Inflammation of the retina.