Do house rules typically permit use of a monocular at the table?

[BIG NIGE]

I have a vision disability and I cannot see the community cards well enough (especially face cards which don't have countable symbols) when I am seated at one of the corners or ends of the table. In cash games this doesn't present too much of a problem because I can wait for a preferred seat or if not then usually someone will be courteous enough to trade seats. However in tournaments where seating assignment is random I would need to use a monocular with magnification in order to sufficiently decipher the community cards if I was seated too far away from the center of the table. Do house rules at major establishments such as those in Las Vegas and Atlantic City permit use of a monocular for this purpose? Would people complain about it being too obtrusive or that I was "spying" on them?