A statement from the TBBC (Thailand Burma Border Consortium – the organisation that runs the camps) dated the 7th says:
The refugee camps haven’t been directly affected by the cyclone and the damages are minor. TBBC have had reports on a few houses washed away in Mae La camp due to heavy rain. Although Mon and Karen States were declared as disaster areas by SPDC, initial reports from our partners suggest that there have been no significant problems in the conflict areas. This is however subject to confirmation as no reports have yet been received from one or two vulnerable areas.