Periodically talk to the ex who lives out in the far reaches of Korat province. We've been ex for a LONG time (I know, why is it of concern to me ), but anyway... She describes what sounds like macular degeneration--black spot in the middle of her vision in the right eye--she is old enough. Says she has been to see an eye doctor in Korat who has raised the possibility of an operation that could cost around 40,000 baht. Her ability to understand things medical is pretty good but her English vocabulary to convey what she has been told is another thing so I don't know what she would be talki