IPA: /ˌrɛtɪˈnaɪtɪs/
KK: /rɛtɪˈnaɪtɪs/
A condition characterized by inflammation of the retina, which can affect vision.
The doctor diagnosed her with retinitis after she reported vision problems.
Retinitis is formed from "re-" (meaning again) and "nitis" (from the Greek "nitis", meaning inflammation). The word refers to the inflammation of the retina, suggesting a condition that occurs again or repeatedly in the retina.
Think of 're-' meaning again and 'nitis' referring to inflammation, which helps you remember that retinitis is about inflammation occurring in the retina.