Comparison of Dynamic Contour Tonometry and Non-contact Tonometry in Older Patients Presenting with Headache or Vision Loss

Table 1: Studies comparing Dynamic Contour Tonometry and Non-contact Tonometry.

Author	Year	n	NCT	Mean Δ IOP (mm Hg)	LoA (mm Hg)	Mean Age (years)	Population
Burvenich	2005	294	Nidek NT 2000	2.7	?	?	Healthy
Erdurmus	2009	104	?	0.8	-0.8 to 3.0	61.4	Glaucoma or Ocular hypertension
Ito	2012	74	Topcon CT-70	3.2	-1.9 to 8.3	70.1	Non- glaucoma
Briceno	2016	45	Visionix VX 120	1.6	-2.9 to 6.1	47.2	Healthy
Present study (OD)	2017	106	Nidek Tonoref II	3.9	-2.5 to 10.4	72.2	Headache or Vision loss

Legend
N: number of patients.
NCT: non-contact tonometer.
DCT: dynamic contour tonometer.
Mean Δ IOP: mean difference in intraocular pressure from NCT versus DCT.
mm Hg = millimetres of mercury.
LoA: Limits of Agreement between DCT and NCT on Bland-Altman analysis.
OD: right eye.