American Academy of Opthamology. https://www.aao.org/eye-health/diseases/glaucoma-treatment
Diakses pada 28 Juli 2020Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/glaucoma/diagnosis-treatment/drc-20372846
Diakses pada 28 Juli 2020WebMD. https://www.webmd.com/eye-health/glaucoma-eyes#1
Diakses pada 28 Juli 2020