Here is what Dr Vavvas of Massachusetts Eye and Ear Infirmary told me.
I have a 1.7mm high choroidal nevur behind my right eyeball. He called it a 'suspicious lesion'. It's smaller than the 2 mm which they use as the cutoff point for concern, and I have no additional symptoms like detached retina, flashing lights, floaters, pain, etc. So it may be nothing, however, we are being cautious and monitoring it.
Since they don't have any photos to compare the growth or non-growth of the lesion, they will examine me in six months in December to see if there are any changes. This could develop into a uveal melanoma and require the insertion of a button with radiation to kill the cancer. This could damage my better-than-perfect eyesight in my eye. I have had excellent eyesight up to now, thanks be to God.
The doctor I saw was covering for Dr Gragoudas, who 'wrote the book' on treating this type of condition without removing tissue from the eyeball. I am trying to modify my diet and pray during these six months that God has given me to be able to save myself from surgery which may damage my vision.
Thank you all for your prayers. They keep me going.