SOMETIMES WHEN I AM READING LATELY,I HAVE NOTICED THAT THE BLACK COLORATION OF PRINTED WORDS DO NOT SEEM TO BE A UNIFORM SHADE OF BLACK. THE LETTERS IN THE WORDS SEEM TO VARY FROM BLACK TO GREY. WHEN I SHOW THE SUSPECTED WORDS TO OTHERS AND ASK ABOUT THE FADED APPEARANCE, NO ONE ELSE SEEMS TO SEE THIS. I WORRY SOMETHING IS STARTING TO GO WRONG WITH MY EYES.