eye strain for two years

[nav999]

I'm 29 now. It began 2 years back with my eyes burning due to working too long on the computer. Was also having a lack of sleep. It was probably aggravated by my spectacle lens getting twisted by about 5 degrees vertically (like a tooth tilting forward). The eye strain became chronic. Got sharp pain behind my eyeballs and muscles all around the eye socket felt sore and had a slight burning sensation (like the feeling when you wear spectacles that are higher than your actual power). I had to take sick leaves and just felt like keeping my eyelids closed the whole day even though I wasn't sleepy.
An ophthalmologist prescribed lacrigel and tears plus, and it gave a lot of relief, but even after using those, the eye strain would be there if I worked for more than 30 min on the computer. I could no longer wear spectacles of the correct power (-4.75 [right] and -4.5 [left]). Ophthalmologists prescribed lenses with -0.25 astigmatism, but my eyes would burn when I wore them for just 10 minutes. I switched to power -4 and was able to manage with it by taking rest with palming, every 30 min. Took a vacation for 15 days, and then even wearing the -4 lens was difficult. I purchased glass lenses of -3.25 power and am trying to manage with it, even though the strain is still there.
The 10th ophthalmologist I visited last weekend said there's no organic problem with my eye, and it may be atypical migraine or a vascular phenomenon (my brother, a doctor says it can't be so, because those can' t happen at both sides of the head at the same time).
I'm surprised at the fact that I can't wear correct power spectacles anymore. I just wore a -4.5 power spectacles (for a little more than half an hour), and even though I wasn't straining to see anything, I just couldn't tolerate the power. All the muscles between my eye sockets and my eyeball, began getting tense and strained. Soon even the top of my cheek muscles started getting strained. Why?

[nav999]

Thank you for replying, Dr.Doreen. I'm the same person who asked this question which you answered: http://www.medhelp.org/posts/Eye-Care/eye-muscles-tense-when-wearing-spectacles/show/2035017#post_9620525

Ophthalmologists have checked my eyeball movement by asking me to focus on their finger which they moved around. They even lifted my upper and lower eyelids and checked to find nothing wrong.
I've been using Lacrigel and Tears plus for many months, but the strain is always there. Found another person with an almost similar problem: http://eyestrain.sabhlokcity.com/ and another person having the exact same problem as me, about no longer being able to wear the correct power spectacles and having to wear a lower power spectacles: http://www.youtube.com/watch?v=SzfAJKn8WVU
My brother is a doctor, and he's suggesting it may be something to do with the nerves. I'm scheduled for an MRI on Monday, but am not very hopeful. Could be a muscle imbalance like you said, because when I roll my eyes, my right eye is not as motile when rolling toward the top-right corner. Assuming you've already examined my eyes and found nothing wrong, what else could you suggest it could be? I'm suffering and it's affecting my job too. Really need help.

[Doreen Fazio, M.D.]

It is very hard to say why this is occurring without an exam.  I wonder if you have a muscle imbalance between the 2 eyes, and need a slight prism incorporated in your lenses.  Your eyes could be dry, and this is a real possibility since the gel and artificial tears seemed to help.  Try taking frequent breaks from computer work, lower the level of your computer screen so that your eyes are not wide open; this will decrease tear evaporation.  Try regular use of an artificial tear, such as Optive, Systane, or Blink Tears 4 times a day.  Be sure you take a multivitamin and fish oil (Omega 3), since these help to maintain a good tear film.