If the one visual reference you have is lost before acquiring another then you go missed. You will overfly the approach lights and they will become invisible. You must have another of the listed visual references to continue. There is no "bonus time".
Edit to add - 14 CFR 91.175 also includes this -
"(i) The approach light system, except that the pilot may not descend below 100 feet above the touchdown zone elevation using the approach lights as a reference unless the red terminating bars or the red side row bars are also distinctly visible and identifiable."
Last edited by EXDAC; 8th May 2024 at 16:20.