First of all, let me thank all of you who have responded to this post.
Last weekend, I finally figures out what my problem was. Notice the past tense. Yes, I do wear glasses, as Str8Shooter suggested. The Prescription is new, so that was not the problem. I use a double anchor. Middle finger in the corner of my mouth and index finger on my cheek bone. My index finger on cheek bone moved the skin and pushed or moved my glasses distorting my vision. I feel a little stupid, not having noticed it sooner. I suppose that focusing so intently on my spot made me oblivious to everything else.
Tnx again everyone, and as always tradgangers are the best.
Ben