BiCROS Aids — They’re Magic

I started with single-sided deafness when I was thirty. As time passed, I often thought that even if my deafness in that ear eventually became profound, I would be able to manage so long as I had hearing in my other ear. Then otosclerosis developed in my other ear and I needed to wear a hearing aid. The aid, lipreading and positioning strategies enabled me to cope and continue my job as a trainer for a local authority.

And then, (if you’ve read my previous posts, you’ll know) I lost the hearing in my better ear quite suddenly and my single-sided deafness switched sides: the severely deaf side was now the ‘good side’ and the ‘good ear’ was now a ‘dead ear’.

It was a confusing time – not least because after years of ‘positioning’ everyone to my left side, I now needed to do a complete switch. Not that I left the house much immediately after the sudden deafness, but when we did, my husband Richard and I both kept getting muddled up about which side we needed to walk on or where to sit.

As a consequence of my sudden deafness, I discovered the CROS hearing aid and the BiCROS system.


A CROS aid is a hearing aid with a microphone but no receiver. It comes in a BTE or ITE version. Personally, I can’t see why you would choose to have something in your ear when there’s no sound going in there — but each to their own. I chose a BTE: it sits behind the ‘dead’ ear and sends a signal to a hearing aid in the other ear.

If you have normal hearing in your good ear, the amplification is only from the CROS (and the hearing in your good ear remains natural). However, if like me, you’re deaf in the other ear too, the hearing aid in the ‘better’ ear acts as both a hearing aid and as a receiver for the CROS.

Now when people ask me which is my ‘good’ side, in terms of where they should sit, I have to explain that both sides are the same. This must be terribly confusing for my friends who know I suffered a profound hearing loss — but the truth is, I get a better idea of sound directionality now than before the sudden deafness — that’s how good the BiCROS system is for me.

Usually, in these situations, I end up showing people my CROS and my hearing aid and explaining that the signal from both goes into just my right ear but that my brain perceives the sound to be coming from both the left and right in terms of directionality. Everyone remarks on how wonderful the technology is that can do such a thing and I tell them, “They’re magic.”

4 thoughts on “BiCROS Aids — They’re Magic”

  1. Where can I get it your deafness is the same as mine currently I’m using the hearing aid but it doesn’t help at all.

  2. I, Too, have bicross hearing aids, but I forget to wear the microphone on my dead ear all the time! I just totally forget it! It does make things louder, but the sounds on my dead ear that transmit to my “good” ear are not as clear as if they were going into my good hear hearing aid. I wonder if this needs an adjustment, because I didn’t know both sides could sound with the same clarity.

  3. I am 64 years old and I will be getting for the 1st time a Bi-Cross hearing aid. I have not recieved it yet. It will probably be a period of adjustment and I am hoping I can understand people a lot better. I have a moderate profound hearing loss in my left ear and I have a very profound hearing loss in my right ear. I will be wearing the bi-cross in my mostly deaf ear.

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