According to an editorial, the deficiencies of intraocular pressure (IOP) as a standalone screening tool for glaucoma,have been known for decades and this study reaffirms that no IOP threshold reliably separates those with optic nerve damage from those without. It adds that approximately 50% of people with glaucoma (about 76% in current study) have an IOP < 21 mmHg and so would be missed by screening; furthermore, approximately 10% of people without glaucoma have an IOP of at least 21 mmHg, and many of them will never develop the condition and would be overdiagnosed and potentially overtreated after screening. It suggests that instead of attempting to detect individual eye diseases it may be more cost effective to screen for all leading causes of vision loss at the same time: cataract, glaucoma, age related macular degeneration, and diabetic retinopathy. The editorial reiterates that reliable and timely detection of glaucoma, a common and treatable cause of blindness, is a public health priority.