On Thursday, 28 January 2016 21:18:26 UTC, Mike Barnes wrote:
My pocket-sized bottle of spectacle lens cleaner has run out. Would it
be OK to refill it with ordinary (e.g. Sainsbury's) window and glass
cleaner?

Cheapskate? Me?

--
Mike Barnes
Cheshire, England

Spectacle lenses are often coated and can't be cleaned with an abrasive cleaner. You're not even supposed to use detergents.

Especially the plastic lenses.