Living on sunlight, energy of space & liquid nutrition healer from
Ukraine
Zhaporozhye newspaper "Gvozdy"
No.8, 2 of June 2005

I'm considering getting into multi-focal contacts and want to figure out the
ongoing cost.  Is buying contacts online a safe way to save money (after the
initial fit by an OD of course)?  I remember from having worn contacts
previously that it's not just about the prescription, ...

Just requesting a bit of help.
I have been trying to find the definition of "line of sight" in
textbooks and over the web, to no avail.
Can anyone provide the technical definition of this concept?

I can't work out what eyepiece correction to use on my binoculars.
I think the binoculars are a bit crap and have some play in the
front-back position of the eyepieces.  If I can made a nominally
correct setting then the slight movement would occur around that