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Table 1 Summary of included studies

From: Intraoperative monitoring of visual evoked potentials in patients undergoing transsphenoidal surgery for pituitary adenoma: a systematic review

Study

Study design

Patients

Number of patients with Pituitary Adenoma

Types of Pituitary Adenoma

Average size of tumour (cm)

Feng et al. (2019)a [18]

Case series

42 pts with primary sellar neoplasms undergoing endoscopic TSS

40

Non-functioning: 32

GH-secreting: 5

Prolactinoma: 3

Non-secretory: 2.81 ± 1.10

Secretory: 3.29 ± 1.80

Other: 1.55 ± 0.64

Overall: 2.84 ± 1.23

Qiao et al. (2019) [19]

Case series

76 patients with sellar region tumour undergoing TSS

(152 eyes tested)

Not reported

Not reported

Not reported

Toyama et al. (2018) [20]

Case series

20 pts undergoing endoscopic TSS

(39 eyes tested)

16

Not reported

2.79 (range 1.5–4.5)

Nishimura et al. (2018) [21]

Case series

82 pts undergoing endoscopic TSS

(164 eyes tested)

Not reported

Not reported

Not reported

Kurozumi et al.a (2017) [22]

Case series

19 pts with sellar/parasellar tumours undergoing endoscopic TSS

17

Non-functioning: 14

GH-secreting: 3

Not reported

Luo et al. (2015) [23]

Case series

46 pts undergoing cranial surgery or TSS

(85 eyes tested)

12

Not reported

Not reported

Kamio et al.a (2014) [7]

Case series

33 pts with sellar or parasellar tumours undergoing TSS

25

Not reported

Not reported

Houlden et al.a (2014 [9]

Case series

10 pts undergoing TSS for tumours near optic nerve or chiasm

2 pts undergoing craniotomy for an occipital lobe tumour and glial based tumour

Not reported

Not reported

Not reported

Chung et al. (2012) [24]

Case Series

53 pts with sellar or parasellar lesions undergoing endoscopic TSS

(106 eyes tested)

37

Not reported

Not reported

Sasaki et al. (2010) [6]

Case Series

100 pts at intraoperative risk of visual impairment including 28 pts with parasellar lesions

(200 eyes tested)

Not reported

Not reported

Not reported

Chacko et al. (1996) [25]

Cohort

36 pts undergoing TSS for pituitary adenomas; 22 with VEP monitoring, 14 without

(72 eyes tested; 44 with VEP monitoring, 28 without)

36

Not reported

Not reported

  1. pts patients, TSS Transsphenoidal surgery
  2. a These studies did not comment on individual eyes tested