are closed ?
Is this normal or do I have weak eye mucles ?
2007-08-22 08:58:11 · 6 answers · asked by Anonymous in Health ➔ Optical
http://www.mic.ki.se/Diseases/C11.html
2007-08-25 13:46:11 · answer #1 · answered by whyulookin4 3 · 0⤊ 0⤋
The eyes protect themselves when the eyes are closed by moving up, and out. This is called Bell's phenomena. It's normal. Most of us have this. That's why if you look under someone's lid while they are asleep you see just the white part of the eye.
When you open your eyes, as soon as an image strikes the retina, the brain kicks in to allign the two eyes. That way you don't have double vision. If the eyes are up and out, like in most Bell's, once the image strikes the retina, the eyes move to become 'straight'.
There are a number of people, a % of the population whose eyes have to 'work' a little to stay aligned. If both eyes are open and seeing, the eyes are both in the same direction. No double vision. But if you cover one eye for about 10 seconds or so, it may drift out or drift in. As soon as it's uncovered, the retinal correspondance kicks in and the eye will align with the other already opened, already seeing eye. This automatic adjustment means it's "fixed" by the brain itself. This self adjustment makes this a "Phoria". There are Exophorias where the eye drifts out when covered, then adjusts back in when it's uncovered. There's Esophoria where the eyes drift IN when covered and back to straight or 'out' when uncovered.
These are NORMAL.
If the person cannot 'fix' the abnormal direction of the eye, that's called a 'tropia'. Exotropia is when one eye is out all the time. Esophoria is the regular crossed eyes thing which may be something fixable by just placing the correct power lens in front of the eyes or by surgery to move the muscles in one or both eyes so both eyes are rotated in the same direction.
No you don't have weak eye muscles. And if you do LOTS of exercises to strengthen the extraocular muscles, then when you close your eyes and reopen it'll STILL take a moment for both eyes to align. The eye exercise thing to 'fix' your vision isn't considered medically advised (doesn't work). You can do all the exercises anyone can suggest and you'd still be myopic, hyperopic, have astigmatism, etc. If you have a camera with a closeup lens, you can move it around all you want with your arms...it'll still have a closeup lens on it and will still take clear pictures only of things close up.
2007-08-22 18:09:54 · answer #2 · answered by ? 5 · 0⤊ 0⤋
It only means that your trochlear and oculomotor nerves are a little slow in reaction time.
If you want to blame your eye muscles, I would claim that a life that is far too sedentary would cause that the eye muscles are weak. You need to train them by interacting in the real world with three dimensional objects, and less time in front of a screen, computer or television. Practice with spacial relationships of actual three dimensional objects will train your eyes to automatically converge when open.
2007-08-22 16:07:18 · answer #3 · answered by Anonymous · 0⤊ 2⤋
No, when your eyes are closed they don't focus on any point
thats farther away than the inside of your eyelid, when you open they begin to focus on what you look at.
2007-08-22 16:09:51 · answer #4 · answered by rusty 3 · 0⤊ 0⤋
no, it just means with your eyes closed your eye muscles relax, it's normal.
2007-08-22 16:01:31 · answer #5 · answered by essentiallysolo 7 · 0⤊ 0⤋
You have a latent squint. Its very common and it doesn't need anything done.
2007-08-22 16:01:40 · answer #6 · answered by Knick A 3 · 0⤊ 0⤋