@article{costa_silva_ambrósio jr._2013,  title={The need for artificial tears in glaucoma patients: a comparative, retrospective study},  volume={76},  ISSN={0004-2749},  url={https://doi.org/10.1590/S0004-27492013000100003},  DOI={10.1590/S0004-27492013000100003},  number={1},  journal={Arquivos Brasileiros de Oftalmologia},  publisher={Conselho Brasileiro de Oftalmologia},  author={Costa, Vital Paulino and Silva, Renata Siqueira da and Ambrósio Jr., Renato},  year={2013},  month={Jan},  pages={6–9} }