title: Effect of ocular compression (Autopressor) on intraocular pressure in periocular anaesthesia.
abstract: One hundred successive patients were operated on for cataract under periocular anaesthesia. The patients were divided into 3 groups to study the effect of extraocular compression on intraocular pressure. In the control group (C-O), no compression was used. In the other 2 groups, compression was applied immediately after local injection of the anaesthetic for either 10 (C-10) or 20 min (C-20). In the control group, a periocular local anaesthetic increased the IOP in 27 of 36 patients, the average increase being 3.8 mmHg (at 10 min). Postanaesthetic compression of the eye led to a decrease in intraocular pressure, which is beneficial for the operative procedure. During the first 10 min, the mean intraocular pressure decreased by 3.1 and 4.0 mmHg in groups C-10 and C-20, respectively. In the C-20 group, there was a further (1.3 mmHg) reduction in intraocular pressure between 10 and 20 min.
authors.affiliation: Department of Ophthalmology, Helsinki University Central Hospital, Finland.
authors.forename: A
authors.initials: A
authors.lastname: Ropo
authors.forename: P
authors.initials: P
authors.lastname: Ruusuvaara
authors.forename: M
authors.initials: M
authors.lastname: Paloheimo
authors.forename: E L
authors.initials: EL
authors.lastname: Maunuksela
authors.forename: P
authors.initials: P
authors.lastname: Nikki
mesh_terms: D000772:Anesthesia, Local / Q000379:methods; D002387:Cataract Extraction; D005041:Etidocaine / Q000494:pharmacology; D006801:Humans; D006821:Hyaluronoglucosaminidase / Q000494:pharmacology; D007429:Intraocular Pressure / Q000187:drug effects; D011182:Postoperative Care; D011300:Preoperative Care; D011312:Pressure; D011897:Random Allocation
chemical_list: D006821:Hyaluronoglucosaminidase; D005041:Etidocaine