Question

Is it possible to see real images without a screen?

Answer 1

Yes

Explanation:

It is possible to see real image without screen . any how if we are successful in Increasing the intensity of light on certain peace of space and decreasing the intensity on rest of the part , for exam in a cuboid volume of area if , by any means we can increase the Intensity of light in a region of small sphere (just example, It can be any thing ) we would able to see the sphere without any screen .
or we say a hologram technology.

Answer 2

No

Explanation:

If what you see is a real image then there is a screen involved, namely your retina.

it is possible to "see" other things, for example by directly stimulating the optic nerve, but I think you would not call that a "real" image.