What Induces Fear?

Nika said:
Hear Again, there are two possible reasons for prismatic lenses.

One of them is to help redirect more of the visual field into one area. For example, people with a stroke who only have half of their visual field will often wear prismatic lenses that are both the same base. (The base means the thick side of the lens. In this case the image is moved over the same way for both eyes.)

The other purpose of prismatic lenses is to correct binocular double vision. Binocular double vision is the result of strabismus, which means the two eyes aren't looking at the same thing at the same time. In this case, the prism has opposite bases, meaning the thick sides are either both pointing away from the center or towards it. The purpose of them in this case is to bring the two double images closer together so the person's brain can combine them.

My eyes couldn't work together because my outer eye muscles (lateral recti) were too short and pulled my eyes outwards. As a result I had double vision. I had base-in prismatic lenses (thick sides on the inside) to bring the two images closer together.

If you want I can explain in more detail, with the steps of the retinal image included in PM. I don't want to bore other AD'ers though. <wink>
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But, earlier, you stated that you had a condition that pulled the eyes inward. I'm confused. Yo had surgery to correct that condition? Did they over correct?
 
jillio said:
But, earlier, you stated that you had a condition that pulled the eyes inward. I'm confused. Yo had surgery to correct that condition? Did they over correct?
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Nope, I said:

My eyes couldn't work together because my outer eye muscles (lateral recti) were too short and pulled my eyes outwards.
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The prismatic lenses were to correct my walleyes (exotropia). They were base-in lenses, meaning the thick parts of the two lenses were pointing towards my nose.

It turns out they did overcorrect.
 
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Nika said:
Nope, I said:



The prismatic lenses were to correct my walleyes (exotropia). They were base-in lenses, meaning the thick parts of the two lenses were pointing towards my nose.

It turns out they did overcorrect.
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Actually, in another thread (I will point you to the thread and post number if you so desire), you claimed to have both incyclophoria ( a condition which causes the eyes to turn inward, and is corrected with visual exercises), and exptropia (a condition which causes the eyes to turn outward, and is also corrected using visual exercises).

So, actually, you did claim to have a condition that pulls the eyes inwards. Perhaps I am not the one who is mistaken.
 
jillio said:
Actually, in another thread (I will point you to the thread and post number if you so desire), you claimed to have both incyclophoria ( a condition which causes the eyes to turn inward, and is corrected with visual exercises), and exptropia (a condition which causes the eyes to turn outward, and is also corrected using visual exercises).

So, actually, you did claim to have a condition that pulls the eyes inwards.
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Yes that is true. I have incyclophoria and exotropia (although I didn't have incyclo during my prismatic lenses days). Incyclophoria is pulling inward on another dimension, on the Z axis (anteroposterior axis). I do not have esotropia (pulling inward on the X axis--the same axis as exotropia). Although I should point out that it is possible to have both eso- and exotropia, in certain conditions such as A-pattern or V-pattern strabismus.
 
okay, now i'm extremely confused. how can one have incyclophoria and exotropia at the same time??
 
They're two different dimensions. Incyclophoria means the eyeball is tilting towards the nose. Exotropia means the eyeball is turning outwards. Incyclophoria is a rotation on an axis that runs through the pupil. Exotropia is a rotation on an axis that runs through the eyes and goes out the top of the head.

And also as I said it is possible to have inward and outward rotation on the same axis. In A pattern, the eyes wander outwards while looking down and cross while looking up. In V pattern, the eyes wander outwards looking up and cross looking down.
 
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Nika said:
Yes that is true. I have incyclophoria and exotropia (although I didn't have incyclo during my prismatic lenses days). Incyclophoria is pulling inward on another dimension, on the Z axis (anteroposterior axis). I do not have esotropia (pulling inward on the X axis--the same axis as exotropia). Although I should point out that it is possible to have both eso- and exotropia, in certain conditions such as A-pattern or V-pattern strabismus.
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If you had both prior to your prismatic days, why is it that you now claim over correction of the surgery to correct the extropia is what caused the incyclophoria?

And, you also claimed to have these conditions (extropia and incyclophoria, simulateously, and the dx was missed by your doctors). So, did you have them simultaneously, and they were misdiagnosed, or did you have them separately, having one diagnosed and treated surgical with the surgery creating the second?

And yes, it is possible to have eso and exptropia at the same time as both involve a pulling inward of the eye. The difference lies in the axis on which that occurs. However, one cannnot have incyclophoria and extopia simultaneously as they are diamentrically opposed.
 
jillio said:
If you had both prior to your prismatic days, why is it that you now claim over correction of the surgery to correct the extropia is what caused the incyclophoria?
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I said I didn't have incyclophoria during my prismatic lenses days. Prisms can't correct torsional diplopia (double vision as a result of your eyeballs tilting.)

And, you also claimed to have these conditions (extropia and incyclophoria, simulateously, and the dx was missed by your doctors). So, did you have them simultaneously, and they were misdiagnosed, or did you have them separately, having one diagnosed and treated surgical with the surgery creating the second?
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I do have them. These diagnoses were caught by my vision therapist. The incyclo is a huge obstacle in the kind of vision therapy I was doing so it was hard for them to miss. It was my eye surgery who missed the incyclophoria.
And yes, it is possible to have eso and exptropia at the same time as both involve a pulling inward of the eye. The difference lies in the axis on which that occurs. However, one cannnot have incyclophoria and extopia simultaneously as they are diamentrically opposed.
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Esotropia and exotropia are on the same axis. Incyclophoria and excyclophoria are on the same axis. The "cyclo" in the words incyclo- and excyclophoria denote the "tilting" on the Z axis. Exotropia is not a pulling inward of the eye--it is a pulling outward of the eye. Esotropia is a pulling inward of the eye.
 
Nika said:
I said I didn't have incyclophoria during my prismatic lenses days. Prisms can't correct torsional diplopia (double vision as a result of your eyeballs tilting.)

But earlier, in a different thread, you claimed that you did have. What does torsional diplopia have to do with it. Oh, and it would be great if you would start citing the sources you are quoting.

I do have them. These diagnoses were caught by my vision therapist. The incyclo is a huge obstacle in the kind of vision therapy I was doing so it was hard for them to miss. It was my eye surgery who missed the incyclophoria.

Is there an eye disease that you don't have? Other than the ones that require more than a symptomological diagnosis?

Esotropia and exotropia are on the same axis. Incyclophoria and excyclophoria are on the same axis. The "cyclo" in the words incyclo- and excyclophoria denote the "tilting" on the Z axis. Exotropia is not a pulling inward of the eye--it is a pulling outward of the eye. Esotropia is a pulling inward of the eye.
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Exactly. Extropia is a pulling inward, incyclophoria is a pulling outward. Your eyes cannot pull inward and outward simultaneously without exploding.:giggle:
 
whoa, whoa, whoa, whoa, whoa nika. "z axis?" your descriptions are *way* over my head. would you mind simplifying your explanations so that i can understand you? thanks.
 
Okay. This was a thread about what induces fear. If you two want to have a discussion about believing Nika's statements, take it elsewhere.
 
AlleyCat said:
Okay. This was a thread about what induces fear. If you two want to have a discussion about believing Nika's statements, take it elsewhere.
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Nika's multitude of symptoms occurring simultaneously in one single individual scares me..:giggle:
 
My fear is having two illnesses that controdicts each other. Eye exploding is indeed something to fear!
 
Okay, starting over folks.

I can't cite sources cause I've been doing research on this ever since I was scheduled to have surgery at age 12 so now it's just acquired knowledge. I can try to find some articles on it if you want.

The eyeballs have six muscles. Two of them help the eyes turn left and right. Two of them help the eyes turn up and down. And the last two help the eyes tilt inwards and outwards (they help with some other stuff but I will leave it out for simplicity's sake.) When I say "tilting," this is what I mean: imagine that your pupil is lined up exactly with the center of a clock. The outside of your eyeball is lined up with the edge of the clock. Your optic nerve is behind the clock; your cornea is in front of the clock. Then imagine you would draw a line on the clock, from 9:00 straight to 3:00, through the center of the clock. Cyclophoria is when the eyeball would turn so that line would end up going from 2:00 to 8:00 or from 4:00 to 10:00.

My eyeballs turned outwards, so that my eyes visible wandered towards my temples. At the same time, they titled inwards, meaning that the top halves of my eyeballs were towards my nose and the bottom halves of my eyeballs were towards my temples. They are not diametrically opposites because incyclotropia/excyclophoria and exotropia/esotropia deal with two different dimensions. Eso/exo rotate on an axis that runs up-down. Incylco/excyclo run on an axis that runs front-back.

Does that make sense?
 
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