I urge everyone to bookmark that blog; it is always a fascinating tour of the weirder and wonderfuller places on our planet. And let me leave you with this simply jaw-dropping video of undulatus asperatus in action.
(A sunscreen with a physical block like titanium dioxide or zinc oxide can be applied last, after a serum or moisturizer.) Apply a serum next and, finally, moisturizer if you need it. Polis also recommends serums or sunscreens with moisturizers built in because they save time.
Like most eye drops, there is generally some stinging immediately after instillation. This is usually momentary. A topical anesthetic (numbing drop) can be used prior to the dilating drop to increase patient comfort. Last updated 11/2015.