. 2020 Feb 7;31(2):139–146. doi: 10.1097/ICU.0000000000000639

Table 1.

Intraocular pressure reductions (mmHg ± SD) in circumferential trabeculotomy studies

Reference	Procedure	Diagnosis	N	Baseline IOP	IOP at last follow-up (length of follow-up)	Percentage change
Chin et al. [21]	Ab externo 360°	POAG/SOAG	43	27.8 ± 12.2	12.9 ± 2.5 (18 months)	−53.6
Grover et al. [23^▪▪]	Ab interno 360°	POAG
		Phakic	46	26.0 ± 6.9	15.6 ± 5.7	−40.0
		w/Phaco	36	22.5 ± 5.4	14.1 ± 3.2	−37.3
		Pseudo	37	24.7 ± 6.2	15.8 ± 7.4	−36.0
		Other^a
		Phakic	30	30.9 ± 10.0	13.8 ± 4.5	−55.3
		w/Phaco	25	25.7 ± 6.3	14.5 ± 4.4	−43.6
		Pseudo	24	26.8 ± 7.9	13.4 ± 4.7 (24 month)	−50.0
Sarkisian et al. [25^▪▪]	Ab interno 360°	POAG (83%)	81	23.7 ± 6.3^b	15.7 ± 5.5^b (12 month)	−33.8

IOP, intraocular pressure; POAG, primary open-angle glaucoma; SOAG, secondary open-angle glaucoma.

^aOther included chronic angle closure, pseudoexfoliation, pigment dispersion, uveitic, mixed mechanism. Other OAG, trauma, steroid.

^bSD estimated from error bars in published figure.