Learn to write while you are still in the dream. If you keep a sheet of paper and a pen by your pillow you will still be able to write in the dark. One gets proficient the more they do it.
The mind is very strong and will eventually compensate. If you get the LED device which detects REM, when it flashes you will eventually dream of sunsets and sun rises. If during the day you constantly look at your palms to make sure that you are not dreaming, eventually you will be able to see the lines of your hand in your dream.