That's eardrums punctured as a result of soundwaves or external blows to the head .
Possibly Charles is thinking in terms of objects such pencils, or similar being inserted into the ear which can cause more serious damage, and which for instance children need to be warned about. And maybe Charles has a very long memory.
michael adams
...
I have a perforated eardrum and wear an aid in that ear. The other ear has a scar from perforation and the loss is not as great in that one so I don't have a pair of aids even though they offered. So, a perforation does not mean that's it - and no, I didn't put something in my ear to puncture it.
Though it may well depend upon the actual prescription, the top end lenses are very much better in this respect.
Chris
yes, but it still isn't good.
NT
How would making your own hearing aid create liability or a legal issue?
NT
That is because sudden hearing loss in one ear is almost invariably a blockage of some kind rather than deterioration of the sensor hairs.
You can't have tried very hard then. Here is the Mail on this today:
Incorrectly fitted hearing aids can further damage hearing, the industry is fiercely protective on maintaining margins on sales, patent and non-disclosure agreement infringements etc...
It's been mentioned before when I've posted similar questions to newsgroups....
Of course nothing will stop someone pulling a crude LM358 from the shelf for their own use, and plenty of web posted plans exist for that.
And ...
Of course there are risks but no-one's going to sue themselves.
NT
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