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View Topic "Bad reading from a Field Test machine is this unusual?"

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Posted By: Lavengro
Total Posts: 224
Joined Date: 3 Sep 2009

Pleased to read your father has no problem with his sught, I on the other hand was grateful a visual field test showed I had glaucoma.

I would like to ask sight line and the contributers to this forum if anyone has experiencs of a trab which was done 10years ago is now lowering the pressure to 4?

Plus there was a programme on television (dr Raj) which showed Moorefields hospital has developed a laxer treatment to lower eye pressure, it was quick and reduced the need for some drops, has anyone received this treatment please? Lavengro   

Posted : 12 Mar 2020
Posted By: Sightline
Total Posts: 306
Joined Date: 20 Feb 2009

Hello

Good to hear that your partner doesn't have any defects in their field of vision. It is usual to put a patch on one eye and to use a lens or glasses to correct the near vision for the field test. The machine does record false positives if there are any, as this helps the person looking at the results to see how well the test was performed by the person taking the test. If glasses are worn the frame must not be too thick as this can occlude some points in the periphery, instead lenses should be used for the test which are placed in a holder in front of the eye. At least now a good experience of the test has been had.

Posted : 11 Mar 2020
Posted By: Hooray Henry
Total Posts: 5
Joined Date: 25 Nov 2015

 

Just updating my own post.

 

Since then he has been to an NHS eye specialist who confirms that there is nothing wrong with his field vision.

I've also found that some local opticians will give you an eye patch and a pair of vision correcting glasses to make sure that each eye is tested accurately and independently. This wasn't done in his original test.

I find this disturbing, but I have to assume from the lack of responding, that this is not a frequent situation.

Posted : 9 Mar 2020
Posted By: Hooray Henry
Total Posts: 5
Joined Date: 25 Nov 2015

My partner is checked yearly because he has glaucoma in the family.

This year his optometrist (at a big, very well known and reputable optician chain) found that he was missing readings on the edge of one eye and one missing reading in the other, and send a letter to his GP saying he should be seen at the hospital, because of his family history and also to ascertain whether there was a non-visual cause.

He was given an appointment 4 months away. (On one of those automatied appointment systems where you can't explain anything.) This did not seem to be right, so both the optmetrist and the GP wrote to the hospital asking for an earlier appointment.

The next letter he got just confirmed the appointment in June.

At this point he was worried and went to a private eye hospital (Moorfields). This is not something we can really afford to do, but he was rightly worried.

Long story short? The eye hospital says that there is nothing significantly wrong, and the readings at the optimetrist may be reading wrongly because the eyepiece does not take account of the patient's prescription.

It is quite shocking to hear that you can get a seriously wrong reading from a reputable optician. It was not done casually, the optimetrist ran the test twice.

Has anyone else had a similar experience? We don't blame the optimetrist, but we wonder if the machine was malfunctioning. Otherwise, why are they taking readings that give false positives? Apart from anything else, his eyesight is very normal for his age (early 60s), he could do OK on Reading Glasses if he chose to.

Thank you for any insight anyone can give.

 

 

 

 

 

Posted : 25 Feb 2020

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