Over 700 articles from the Journal of Ophthalmic Photography (JOP) are available through the OPS website. Articles currently cover all issues of the JOP from 1979 though 2009. Using the basic search function of this website (searching by title or author name) should allow you to retrieve articles of interest.
An index of JOP volumes 1-20 (1978-1998) can be found here.
If you are unable to locate specific articles using the search box at the top left of the web page, please contact Tim Bennett at firstname.lastname@example.org