Riemann C D, Foster J A, Kosmorsky G S
Division of Ophthalmology, Clevelend Clinic Foundation, Ohio, USA.
Ophthalmic Plast Reconstr Surg. 1999 Mar;15(2):121-5. doi: 10.1097/00002341-199903000-00010.
To determine orbital tissue tension and orbital compartment compliance in normal patients.
An orbital manometer was designed to directly measure orbital tissue tension before, during, and after a 5-ml retrobulbar injection of anesthetic in patients undergoing ocular surgery. Tissue tension was recorded for 5 minutes after the injection. Orbital compliance was calculated as change in volume divided by change in pressure. Data were collected from 18 normal orbits.
Resting orbital tissue tension was 4.0 +/- 1.5 mmHg (mean +/- standard deviation). After retrobulbar injection, orbital tissue tension rose to 11.6 +/- 2.6 mmHg (p = 0.00000000009 compared with baseline). After 5 minutes, tissue tension declined to 6.6 +/- 1.9 mmHg (p = 0.00000001 compared with preinjection and p = 0.00002 compared with postinjection). Orbital compartment compliance was 0.74 +/- 0.31 ml/mmHg. No adverse events occurred.
The authors' orbital manometer safely determined orbital tissue tension and orbital compartment compliance in normal orbits. Retrobulbar injection causes consistent measurable changes in orbital tissue tension. Directly assessing orbital dynamics in vivo may prove useful both as an adjunct in the clinical evaluation of patients with disorders resulting in an orbital compartment syndrome as well as in assessing the risk of retrobulbar injection in orbits at greater risk for complications from this procedure.
测定正常患者的眶组织张力和眶腔顺应性。
设计一种眶压力计，用于在眼科手术患者球后注射5毫升麻醉剂之前、期间和之后直接测量眶组织张力。注射后记录5分钟的组织张力。眶顺应性计算为容积变化除以压力变化。从18个正常眼眶收集数据。
静息眶组织张力为4.0±1.5 mmHg（平均值±标准差）。球后注射后，眶组织张力升至11.6±2.6 mmHg（与基线相比，p = 0.00000000009）。5分钟后，组织张力降至6.6±1.9 mmHg（与注射前相比，p = 0.00000001；与注射后相比，p = 0.00002）。眶腔顺应性为0.74±0.31 ml/mmHg。未发生不良事件。
作者的眶压力计安全地测定了正常眼眶的眶组织张力和眶腔顺应性。球后注射会引起眶组织张力一致的可测量变化。在体内直接评估眶动力学可能被证明是有用的，既可以作为导致眶间隔综合征的疾病患者临床评估的辅助手段，也可以用于评估该手术并发症风险较高的眼眶进行球后注射的风险。
