A disagreeable object. It will be an eye-sore as long as she lives, said by a man whose wife was cut for a fistula in ano.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
eye * face-makingNathan Bailey's 1721 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes