An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
el-Maghraby A, Anwar M, el-Sayyad F, Matheen M, Marzouky A, Gazayerli E, Salah T, Ballew C.el-Maghraby A, et al. Among authors: ballew c.J Cataract Refract Surg. 1993 Jul;19(4):494-8. doi: 10.1016/s0886-3350(13)80613-x.J Cataract Refract Surg. 1993.PMID: 8355156Clinical Trial.
John ME, Martines E, Cvintal T, Mellor Filho A, Soter F, Barbosa de Sousa MC, Boleyn KL, Ballew C.John ME, et al. Among authors: ballew c.J Refract Corneal Surg. 1994 Mar-Apr;10(2 Suppl):S206-10.J Refract Corneal Surg. 1994.PMID: 7517302