You will qualify for the higher rate of the mobility if you can show that you are both deaf and blind.
You must be at least 80% disabled resulting from loss of hearing and 100% disabled resulting from loss of sight.
You need to show that being deaf and blind means that you cannot walk to any
intended or required destination
without the help of someone else.
The 2001 RNID factsheet on DLA states-
"You will be classed as 100% disabled due to blindness if your sight loss is such that you are "unable to perform work for which eyesight is essential". People who are registered blind, or whose sight loss is such that they could be registered blind, are treated as 100% disabled. You will be treated as 80% disabled from deafness if your level of hearing loss is at least 87dB in both ears at frequencies 1, 2 and 3 kHz taking into account a hearing aid if you usually use one."
