Hello Peter,
Your doctor will ask you what sort of lenses you want put in, either to optimise short or long sight. I didn’t know you could get multifocal ones – I don’t like them in ordinary glasses, they affect my peripheral vision.
I have had replacement eye lenses to optimise long sight for about four years. My right eye has 20/20 vision, the left one not so good because of another problem. The main negative is that my eyes no longer tolerate glare – I have to wear sunglasses whenever I’m out in bright light. My specialist said that “everyone should wear sunglasses from the day they are born”. I also have a problem now with dry eyes and have to use Tears plus – fairly common for older people apparently but I didn’t have to before the operation.
Another problem I have is that my eyes are slightly out of collimation (alignment). The specialist who did the op simply referred me to an optometrist, but another doctor (friend) said that my right eyelid may have been stretched during the operation (touch the eyelid lightly and the eyes line up.}
My only advice is ask lots of questions and even though this is now considered a simple procedure, all doctors are not equal. So the answer is I don’t see birds as well at a distance anymore, but perfectly well through binoculars or a camera. I don’t hear as well either!! We are all getting older.
Best wishes
Graeme Chapman
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Ah, I see (excuse the pun). Yes, that is your real query…….
Peter Madvig
But that’s different focal lengths for each eye. Multifocal implants seem to put two images on each eye, only one of which will be focused.
Peter Shute
Exactly the same with me. Only use sun glasses. Cheers,
Fiona Anderson
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Works wonders for me, Peter. Left lense long, right one short…I could drive and read at the same time…IN A MANNER OF SPEAKING
Cheers Peter Madvig
I don’t think multifocal replacement lenses work the same way as multifocal glasses. Rather than having different zones of focal length that you look through as appropriate, you can’t choose which part of the lens to look through, so there are concentric rings of each focal length.
Therefore one’s brain has to learn to make sense of an image composed of two focal lengths superimposed. Apparently it works, but I wonder if a birder might notice a loss of sharpness compared to monofocal lenses.
Source: http://www.eyespecialist.name/english_cataract_controversies_multifocal.html
I’ve no idea of the accuracy of the information on that website. Can anyone comment on this from experience?
Peter Shute
Sent from my iPad
Hello Peter,
Your doctor will ask you what sort of lenses you want put in, either to optimise short or long sight. I didn’t know you could get multifocal ones – I don’t like them in ordinary glasses, they affect my peripheral vision.
I have had replacement eye lenses to optimise long sight for about four years. My right eye has 20/20 vision, the left one not so good because of another problem. The main negative is that my eyes no longer tolerate glare – I have to wear sunglasses whenever I’m out in bright light. My specialist said that “everyone should wear sunglasses from the day they are born”. I also have a problem now with dry eyes and have to use Tears plus – fairly common for older people apparently but I didn’t have to before the operation.
Another problem I have is that my eyes are slightly out of collimation (alignment). The specialist who did the op simply referred me to an optometrist, but another doctor (friend) said that my right eyelid may have been stretched during the operation (touch the eyelid lightly and the eyes line up.}
My only advice is ask lots of questions and even though this is now considered a simple procedure, all doctors are not equal. So the answer is I don’t see birds as well at a distance anymore, but perfectly well through binoculars or a camera. I don’t hear as well either!! We are all getting older.
Best wishes
Graeme Chapman
===============================
To unsubscribe from this mailing list, send the message: unsubscribe (in the body of the message, with no Subject line)
http://birding-aus.org =============================== ===============================
To unsubscribe from this mailing list, send the message: unsubscribe (in the body of the message, with no Subject line)
http://birding-aus.org ===============================