| ORIGINAL ARTICLE |
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| Year : 2010 | Volume
: 13
| Issue : 2 | Page : 125-127 |
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Intraocular pressure, retrobulbar anaesthesia and digital ocular massage
SNN Nwosu, AI Apakama, BC Ochiogu, CN Umezurike, VO Nwosu
Guinness Eye Center, Onitsha, Nigeria
Correspondence Address:
SNN Nwosu
Guinness Eye Center, Onitsha
Nigeria
 Source of Support: None, Conflict of Interest: None  | Check |
PMID: 20499741 
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Objectives: To determine the degree of intraocular pressure (IOP) rise following retrobulbar anaesthetic injection as well as the optimal time required for the return of the IOP to the pre-injection level following ocular massage.
Materials and Methods: Using the Perkins hand-held tonometer, the IOP of consecutive adult patients were measured in the operating room before local anaesthetic (3ml of 2% xylocaine with or without adrenaline) injection; immediately after injection and every minute following ocular massage for the next5minutes.
Results: Twenty-three eyes of 17 patients, aged 23-71 years, were studied. The mean (±SD) baseline (pre-injection) IOP was 16.6(±6.8) mmHg. Immediately after the injection the IOProseby11.8-80% with a mean of 37.3±16.8% (95%CI: 30.4-44.2). By 3 minutes the IOP had returned to the pre-injection level. After 3 minutes the IOP had become lower than the pre-injection level (p<0.05)
Conclusions: IOP rise following retrobulbar injection of 3 ml of local anesthetic varies from 11.8-80%. Digital ocular massage lowers the IOP to pre-injection levelin60.2% in3minutes; in 5 minutes it lowers the IOP to pre-injection level in all eyes and to below pre-injection level 86%. |
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