These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.
13. Verifying and evaluating progressive addition lenses in clinical practice. Bell GR. Optometry; 2001 Apr; 72(4):239-46. PubMed ID: 11338449 [Abstract] [Full Text] [Related]
14. Adaptability of a broad spectrum of randomly selected patients to a variable design progressive lens: report of a nationwide clinical trial. Young JM, Borish IM. J Am Optom Assoc; 1994 Jun; 65(6):445-50. PubMed ID: 8089391 [Abstract] [Full Text] [Related]