What Induces Fear?

Hear Again said:
when was this, nika? the reason i ask is because they now have bifocals that can accommodate both types of lenses.
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When I was 14 and 15. The reason they couldn't fit the lenses is because I had prism in my prescription. Even a weak prism is an extremely thick lens because it's an attempt to fit a triangular lens into a glasses frame. Now I don't use prismatic lenses anymore since I pretty much have no more useful vision in my left eye and the purpose of my prismatic lenses was to help my brain to combine my two eyes' images.
 
Jiro said:
simple. she would like to have some privacy :laugh2:
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ill just close my eyes? :hmm:

Hear Again said:
:laugh2:

you can find out more about head collars by visiting:

head collar dog training gentle leader and haltie
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i read that page. not sure id want to use that with her. the article says it may be possible to cause a neck injury and since she'll try to chase a loud car or truck if one goes by and the leash catches and jerks it might not be safe. shes even pulled me down twice trying to catch a truck when i wasnt expecting it and i weigh 220 so that tells you how hard it jerked. :dizzy:
 
Nika said:
When I was 14 and 15. The reason they couldn't fit the lenses is because I had prism in my prescription. Even a weak prism is an extremely thick lens because it's an attempt to fit a triangular lens into a glasses frame. Now I don't use prismatic lenses anymore since I pretty much have no more useful vision in my left eye and the purpose of my prismatic lenses was to help my brain to combine my two eyes' images.
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I'm sorry, but I don't understand this. Do you mean that your eyes didn't have the ability to work as a team? Is that why you needed the prismatic lenses, to get your eyes to work as a team to combines the two eyes' images?
 
Mmmmmm... I'm not sure if I exactly know what my fear is... I guess it could be almost anything, maybe?

But I know my small fear is... anything I want to say but, sometimes, I may afraid to 'speak' my own opinions... =/
 
Nika said:
When I was 14 and 15. The reason they couldn't fit the lenses is because I had prism in my prescription. Even a weak prism is an extremely thick lens because it's an attempt to fit a triangular lens into a glasses frame. Now I don't use prismatic lenses anymore since I pretty much have no more useful vision in my left eye and the purpose of my prismatic lenses was to help my brain to combine my two eyes' images.
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since you were 14 and 15 years old, i wonder why your opthalmologist didn't consider fitting you with bifocal contact lenses?
 
LuciaDisturbed said:
I'm sorry, but I don't understand this. Do you mean that your eyes didn't have the ability to work as a team? Is that why you needed the prismatic lenses, to get your eyes to work as a team to combines the two eyes' images?
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Precisely. My eyes couldn't work as a team without the help of prismatic lenses. The prismatic lenses helped bring the two images closer together and then from there my brain could do the rest of the work.
 
Hear Again said:
since you were 14 and 15 years old, i wonder why your opthalmologist didn't consider fitting you with bifocal contact lenses?
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I tried contact lenses and I didn't like them at all. <shudder> Things in my eyes? No thanks. (Keep in mind I am Nika "shakes at the thought of eye drops" D.)
 
Nika said:
Precisely. My eyes couldn't work as a team without the help of prismatic lenses. The prismatic lenses helped bring the two images closer together and then from there my brain could do the rest of the work.
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nika,

i thought the purpose of prism lenses were to help focus peripheral vision. i know they are prescribed for people who have retinitis pigmentosa and have tunnel vision as a result. did you have a restricted visual field? the reason i ask is because one of the purposes of prismatic lenses is to expand what a person sees in their central visual field outward to their peripheral vision.

by the way, why couldn't your eyes work together?
 
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>
 
when i was kid i was scared of big dogs but now that i still don't like dangerous dogs.
i have fear of snakes eekk

i used to watch scary movies and i keep checking things behind me to see if anyone stalked me.
 
i'm confused. i thought the purpose of the lateral recti *was* to pull the eye outward.
 
Hear Again said:
i'm confused. i thought the purpose of the lateral recti *was* to pull the eye outward.
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Yes that's right. But if the eye muscles aren't balanced, then you end up cross-eyed or wall-eyed or with one eye slightly higher than the other. I was wall-eyed.

If you want to research some medical journals, you can look up exotropia (walleye), esotropia (cross eyes) or hypertropia (one eye above the other.)
 
Nika said:
Yes that's right. But if the eye muscles aren't balanced, then you end up cross-eyed or wall-eyed or with one eye slightly higher than the other. I was wall-eyed.

If you want to research some medical journals, you can look up exotropia (walleye), esotropia (cross eyes) or hypertropia (one eye above the other.)
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you must have had strabismus due to the fact that prismatic lenses were prescribed?
 
Nika said:
Yes.
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now i understand. when you say you have strabismus, everything you said in your previous post makes sense. i was unsure of what you meant because the purpose of the lateral recti is to pull the eye outward. hence, my confusion.
 
My bad, Hear Again. Sorry for the confusion. I had surgery on my lacteral recti -- bilateral lateral rectus recession.
 
Nika said:
My bad, Hear Again. Sorry for the confusion. I had surgery on my lacteral recti -- bilateral lateral rectus recession.
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oh, okay. that makes perfect sense. i hope you understand that i wasn't doubting you -- i was just confused because of your phrasing. thanks for clarifying.
 
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