François J, Goes F, Zagorski Z
Am J Ophthalmol. 1978 Aug;86(2):233-8. doi: 10.1016/s0002-9394(14)76818-7.
The ultrasonographic examination of pilocarpine 2%- and Ocusert P 20-treated eyes clearly demonstrated that the side effects, such as accommodative myopia and changes of the anterior chamber depth and of the lens thickness, were less pronounced in the Ocusert-treated group.