Human vision, visual correction, and visual science

Archive for February, 2010

What's happening to my retinae?

The pathological history of my retinas began just after a periodical
control last year. I am a 39 years old male, short-sighted from 15 (last
year it was -5.50 Left, and -6.00 Right).
I have no remarkable pathology, such like diabetes, hypertension, etc..
In March 1996 the oculist found a big peripheral retinal degeneracy in
both my retinae and suggested me a laser photocoagulation treatment. At
that time it seemed that no urgency was due.
But the day after I saw a shadow in the upper right side of my left eye
sight spot: retinal detachment. It has been necessary a surgical
procedure and things got better. Of course I hurried to make my right
eye treated by argon laser to prevent the same problem. After six months
the right eye showed again the same peripheral degeneracy and moreover a
retinal hole (N.B.: I know it is strange, but I saw no flashing lights).
So another laser treatment was needed.
Now my questions are: is the laser coagulation really effective in my
case, or sooner or later the surgical procedure will be the only
solution for the right eye too?
Has someone experience on such a phenomenon of fast retinal denegeracy?

IFAM – CNR       Via del Giardino, 7       I-56127 Pisa  ITALY
Laser Spectroscopy Group – Phone: +39 50 888-126; Fax: 888-135
http://www.ifam.pi.cnr.it/

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Microkeratome

I would like to know from anyone that has experience with the Barraquer –
Krumeich Microkeratome: how it compares with other devices, clinically,
user friendlyness, mechanically, costs, complications, etc.
Are there any users in the U.S.?
Thanks for any Info.

HRG

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Night Blindness

My friend says that she can’t see well at night and isn’t able to see
people in dim light.  Someone recommended surgery for her eyes.  What
could cause this?

Mick

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Bilberry Herb nourishes eyes?

I heard that BILBERRY will nourish and protect the eye.  Any feedback
is appreciated.

Mick

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Retinal tears

If the retina was torn or pulled slightly; and flashes of light are
seen for a few minutes, would eyesight be normal after that incident?

Mick

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Computer Monitors

With a cheap monitor; the refresh rate is slow.  There is a noticeable
flicker.  Can this cause physical damage to the eyes?  Are those
computer glasses worth the money?

Mick

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Contacts for Color Blindness

Someone posted a message on this board a few months ago pointing to a
website in the UK that discussed a procedure for making special contacts
to help people with green-red color blindness. Does anyone know the URL
to that site?

Thanks for your help.

-Karen

http://www.pobox.com/~kbell/

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Screen magnifiers info

Gu,

   The test results of the low cost screen magnifier Big-w are now
available on the screen magnifiers homepage.

   http://www.plex.nl/~pverhoe (with frames)
   http://www.plex.nl/~pverhoe/main2.html (without frames)

Peter Verhoeven
Internet http://www.plex.nl/~pverhoe (the screen magnifiers homepage)
E-Mail p…@oce.nl or pver…@plex.nl

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Corneal/vitreous floaters

Would anyone care to speculate on how one is to distinguish between
the two? I am assuming that if a floater appears to be pulled down
by gravity, it must exist before the lens, whereas if it is a vitreous
floater, it would appear to drift upwards since gravity would pull it
down across the retina.

Any thoughts appreciated,

hadri…@mdx.ac.uk.

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medical research procedures and forms

Subject: medical research procedures and forms

1.
My Question:

        Dear Madam/Sir

        I am trying to arrange an medical research between an exercise
and
        health improvement.

        I saw some medical reports on the internet, but I couldn’t see
        their procedures and forms used. Where to find these procedures
        and forms. Whom should I contact?

        Appreciate it if you could help me.

        Happy New Year!

        Sincerely
        Lyne

2.
The following is a letter from a researcher.

     If you could be more specific about the type of research, it would
be
     helpful.  For example, is this a controlled clinical trial?  If so,
you
     will need consent forms, FDA approval, IRB (hospital "Institutional
Review
     Board" approval etc.  A good start if indeed you are doing clinical
trials
     are the books written by Burt(?)  

3.  
The following is my reply to the above letter.

    Appreciate your kind help!

    Re: about the type of research      

    I am planning to teach a group of people some exercises and they
have to do
    these exercises everyday.

    I would like to collect some information about their health
improvement
    at the following times:
        * Before the training
        * One   month  after the training
        * Three months after the training
        * Six   months after the training
        * nine  months after the training
        * twelve  months after the training
        …

    For example, people may have the following health problems:
        * Stomach Ache
        * Low Backbone Ache
        * Knee Problems
        …

    For the moment, I have the following questions:
        * Any example forms available for me, even the example forms which are
                for other kinds of health improvement or similar reserches.
        * What should the health indicators be collected largely?
        * Are there Any recerch centers or people may provide me with some              
information for forms or procedures?
                Where to find them? Web sites or email addresses?

    Please email me if I didn’t state clearly.

    mailto:englis…@hotmail.com

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