The landing and judging height.
Some years ago I wrote an article about judging the height for landing here on Pprune.
A discussion in another thread has prompted me to retype the article as close as I can remember it.
From a stabilized approach ( stabilized angle of attack at a pre determined airspeed. ) you fly the airplane to your preselected flare point on the runway with or without power.
( With a light airplane the flare from the approach path to level with the landing surface should be started at approximately fifteen feet for a nose wheel airplane or a tail wheel airplane that you are planning to three point. )
During the final approach your center of sight line should be the point at which you plan to flare, for instance the runway numbers.
At the flare height you do two things, raise the nose to the level attitude and at the same time refocus the center of your sight line at a point ahead of you on the runway center line where apparent movement of the runway towards you ceases..... this will be about four to five hundred feet ahead of your present position depending on G.S. and your sight line above the runway.
This new sight line will give you the optimum angle to best judge not only your height but any deviation left or right of the center line, the picture you get now will allow you to see the far end of the runway as well as the runway closer in in your peripheral vision .
Do not fixate on this point of the runway ( The point where apparent movement of runway towards you ceases. ) use it as the center of your vision forward and you can use eye movement both further and closer in as a means of height judgement....
...Holding the airplane in the level attitude with power off results in a loss of airspeed and lift will decay, the airplane will sink towards the runway.... at one foot above the runway use the elevator to prevent the airplane from landing which will result in a proper nose up attitude at touch down.
That in a nut shell is a quick overview of how I teach height judgement for the landing.