Also we know that pre-teens are more than twice as sensitive to light as people in their late teens [1], and CRTs were 9300K also [2], though they were quite a bit dimmer than current ones.

1. https://academic.oup.com/jcem/article/100/11/4067/2836092

2. https://fluxometer.com/rainbow/#!id=NEC%20Diamondtron%20CRT/...