I suffer from a phenomena that occurs rarely from time to time with my Vision. I believe I could be the only one who experiences this, so it will be difficult to discuss.
I spend alot of time on computers, so this may be triggered from it. I don't wear glasses, and I was tested when I was young and have 20x20 eye sight. When this occurs I am in a dark room, with the only light source being my TV and Computer screen, my eye sight starts to change completely, and I can feel it before it happens.
My regular eye sight is changed so everything appears further away, and my peripheral vision is increased, like the "Field of View" has become more wide. This frightens me very much when it happens, and it can only be reverted back to my original eye sight by going to sleep.
Is this common amongst people who spend most of their time on computers, or am I just experiencing something beyond belief?
Let me initially assure you that you do not have anything abnormal going on with your vision or eyes. What you are describing is completely normal. It happens in darkness in most of the people. You are observant enough to observe it. In near or total darkness, our vision accommodative muscles in the eye contract to focus more vigorously than in light conditions. This accommodation process goes into continuous mode when there is not light source to focus on, this process will give you a feeling of visual field changes. In fact, a normal person's vision is not the same in near or total darkness due to this process. A normal seeing person with 20/20 vision becomes slightly myopic and it is called ' Night or accommodative Myopia' which is more noticeable when you are driving on motor/highway on a dark night. Night myopia may be up to -0.75 D in emmetropic (no sight) people. Hope this information keeps your mind at rest and is helpful. Thank you.
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