Table 2.

Treatment characteristics of patients with primary open angle glaucoma (n = 40)

	Number of patients (n)
History of trabeculectomy	8
History of selective laser trabeculoplasty	1
No topical therapy	4
Topical therapy with beta receptor blockers	24
Topical therapy with prostaglandin analogues	32
Topical therapy with carboanhydrase inhibitors	16
Topical therapy with alpha receptor agonists	1
Topical therapy with one drug class	14
Topical therapy with two drug classes	6
Topical therapy with three drug classes	16