Looking at the world through a window

How distorted is our view of the world? I mean our immediate view, the naked eye to the live subject. Don't we spend most of the time looking at the world around us through windows? Windows in the bedroom, the office, the car, the train, the reading glasses, the camera glass etc etc. "Ah, but my windows are clean" you might say, but even the cleanest of glass detracts some measure of clarity and detail from what the eye is capable of seeing when it comes one to one with its subject. What about the eye itself? Would it be so extraneous to consider the eye as its own window? After all, ophthalmologists refer to the glazed section between the cornea and the fovea as the 'lens' and that lens comes between the subject around us and the optic nerves that carry the visual data to our brains where the ultimate image is stored. So is our view of the world doubly distorted? How about triply distorted? It's possible isn't it? With everything that revloves in our minds, things we've heard on the tv, voices around us, thoughts and ideas, books we've read, teachings of others and so on, all help to form another layer of distortion over our view of the world. So as I sit here at my computer and turn to the window on my left, gazing out into the world, I wonder, what am I actually looking at?