Your corneas are kept moist at all times (or should be). They’re also very warm. The only way I could see a noticible layer of condensation forming on them is if your corneas were dry and cool.
For a simple demonstration of the principle, splash warm water on a mirror and hold it near a steaming mug of coffee (or other piping hot liquid). You’ll notice, if the surface of the mirror has a layer of water on it, you don’t see “steam”. That’s because the “steam” you see on a relatively cool, dry mirror is actually a fine collection of tiny water droplets that refract and scatter light in such a way as to make a translucent layer. If there is already a continuous sheet of water on the mirror, the water vapor, when it cools, simply adds to the volume of this sheet, and refracts light no differently than any thin sheet of water would. In other words, its completely transparent.
Your lacrimal glands are constantly supplying the surface of your eyes with salinous liquid, and blinking spreads this liquid out over the eyeball and cornea; this keeps the eye lubricated and protect its cells and their essential optical properties, as well as supplying those cells with needed oxygen and nutrients. I think your eyes could survive brief periods of complete drying, but prolonged drying would most certainly cause damage.
So, while I think it is theoretically possible for eyes to be clouded by steam in a manner analogous to steam on a mirror or window, if your eyes are in such a state, your vision is probably already compromised. Grab some eyedrops and get thee to an emergency room, because you’ve got problems!