Table 4. Adherence with glaucoma medication among adult Saudi glaucoma patients as compared to other studies.

	Author	Year	Sample size	Adherence rate	Notes	Reference
1	Khandekar R	2005	105	25% compliance	Poor KAP as a cause	9
2	Osman EA	2016	108	81.6%	Duration of medication and barrier	10
3	Masouri K	2011	200	81%	Glaucoma patients in Switzerland	12
4	Mehri T	2016	359	42.6%	Cost, education level and barriers	13
5	Newman Casey	2015	1234	23% after 4 years	Duration, age, and cost barriers	11
6	Cohen Costel O	2014	738	71%	Duration, age, and barriers	14
7	Boland MV	2014	407	82.8%	Objective method, 3 months after the start of medication	15
8	Lunnela J	2011	249	67%	Finish glaucoma patients	16
9	Movahedinejad T	2016	130	34%	Education, rural patients barrier	17
10	Jiang H	2017	156	53.2	Complex medications barrier	18