Not very bright at all. The process of becoming blinded by light is because the iris contracts when the light level increases. The reverse process of dilation is slow for humans, so the return to darkness leaves your eye with insufficient light coming in to see in the environment you suggest. This isn't a binary factor.
The VA calculates the rate of pursuit by dividing the number of credit hours being pursued by the number of credits considered to be full-time for the term. As as example, if the term is 10 to 13 weeks in length, 12 credits is considered full time. If the term is 8 weeks in length, 8 credits is considered full time.
Full-Time/Part-Time Status: Indiana University students are considered full time when they are enrolled in 12 or more credit hours of course work; students enrolled in fewer than 12 credit hours are considered part-time students. A typical full-time load is approximately 15 credit hours. Students are cautioned to remember that enrollment status can affect financial aid and/or insurance coverage/benefits. Completion of the teacher education programs in four years requires a minimum of 16 credits per semester for most programs.