1800 contact is good i recently got some & they deliver pretty darn fast . Your eyes aren't really used to not being without the glasses so it may feel weird
The statement is probably false knowing that there is a notion of " atrophy" that probably originates from " trophy- trophic" and that if we consider a trophic chain abolished then the biocenoses just adapts before disapearing. If the adaptive process is not compatible to the remaining coordinates then some species would probably have to be protected
