From the last 2 weeks, I am seeing shadow of letters when the background is dark & less visible in white background. I see letters/numbers in my phone just top of the letters. It is not like double image & just transparent shadow like image. When I bring my phone  closer to my eye like 15-20cm the ghost image dissappear but whenever I see distant object specially in dim light, I see a shadow image (just top portion of the object) I have attached an image of letters that looks like same I that I see. The last eye checkup was done in 2014. The doc told my my vision 6/6, so no glass is required.