konceptual99, referenced this article on another thread:
What I thought was curiously odd was that the WTBTS quoted a notable ex-JW and apostate, Jerry Bergman!
“If the pigment epithelium tissue were placed in front of the retina, sight would be seriously compromised,” wrote biologist Jerry Bergman and ophthalmologist Joseph Calkins. - Awake!, January 2011, p. 15
Paul Grundy writes about Bergman on his JWFacts page about mental illness
The following excerpts are summarized quotes from PARADISE POSTPONED ... AND POSTPONED: Why Jehovah's Witnesses Have a High Mental Illness Level. Jerry Bergman has researched and written extensively about Jehovah's Witnesses. As a former Witness his findings may be considered biased, however the reasoning he provides merits consideration.
Why would they do that?
(You can read Bergman's biography by clicking on the hyperlink on his name in the Awake! quote).