Mae’r gostyngiad hwn mewn nam golwg yng Nghymru yn rhannol o ganlyniad i driniaethau fel y driniaeth ar gyfer dirywiad macwlaidd gwlyb sy’n gysylltiedig â henaint. Nid oedd triniaeth o’r fath ar gael yn 2007. Y llynedd (2013/2014), darparodd Llywodraeth Cymru gyllid o fwy nag £16m ar gyfer bron 15,000 o driniaethau i atal dallineb (gwybodaeth reoli Llywodraeth Cymru).
This reduction in visual impairment in Wales is in part a result of new treatments such as that for wet age-related macular degeneration (AMD). In 2007, there was no treatment available for wet AMD.  Last year (2013-14) the Welsh Government provided more than £16m for almost 15,000 treatments which prevent sight loss (Welsh Government management information).