Nonradio:
Exactly.
Visual clues, or looking in the correct area ahead or ahead to the side is the "ONLY" way accurate height and sink judgement is possible.
The correct area to center your sight is at that point on the runway where apparent movement stops. ( that point ahead of you where the runway markings seem to lose their appearance of movement, this will vary in direct perportion to your speed. The higher your speed the further down the runway apparent movement will be.
The best method for identifying this apparent movement picture is to watch movies or videos of different airplanes landing, the faster the airplane the further ahead the runway movement picture will be.
By making this area the center of your sight line pheripheral vision will then fill in the correct height judgement skills.
Looking to close or to far ahead degrades your ability to accurately judge height.
There another good samaritan act on my behalf.
Cat Driver:
The hardest thing about flying is knowing when to say no.