There's a utility for hiding body parts that goes very well for these things:
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But it can be done manually:
- Create a camera and place it in the eye (move it until you see the character's eye from inside his/her head).
- Search in scene tab the head of the character and click on the icon of the eye so that it is not seen in the scene; do the same with the hair.
- Select the camera, go to "camera" in parameters tab and lower the "focal lenght"; for POV use values between 40-50
EXTRA: If you want to leave the camera always ready for this, that is to say, that it is stuck to the eye of the character, select the camera in scene tab, press right button and parent in the eye you want... in this way the camera will always follow the eye
PS: Sorry for my english