Is orbital floor a reliable and useful surgical landmark in endoscopic endonasal surgery?: a systematic review

Table 1 Overall summary of studies included in the review

Study	Year of study	Type of study	No of Sides
Casiano et al. [12]	2001	Cadaver	18
Harvey et al. [13]	2010	CT PNS^a	300
Lee et al. [15]	2012	CT PNS^a	100
Wuttiwongsanon et al. [14]	2015	CT PNS^a	300
Lee [19]	2017	CT PNS^a	230
		Total	948

ISSN: 1472-6815