Schiefer U, Wilhelm H, Zrenner E, Aulhorn E
Abteilung für Pathophysiologie des Sehens und Neuroophthalmologie, Universitäts-Augenklinik, Tübingen, Bundesrepublik Deutschland.
Fortschr Ophthalmol. 1991;88(5):522-9.
In 17 ocularly healthy persons the IOP was artificially raised by suction cup oculopression (negative pressure: 65 mmHg [8.67 kPa]) from initially 15.5 +/- 2.2 mmHg (2.07 +/- 0.29 kPa) to 25.2 +/- 4.0 mm Hg (3.36 +/- 0.53 kPa) (mean +/- SD). Continuing the initial refractive correction, visual acuity (Landolt's rings) decreased from initially 1.06 +/- 0.13 to 0.39 +/- 0.22 (P less than 0.001* [t-test, paired ties each]). A new optical refraction with suction cup in position significantly raised the visual acuity to 0.64 +/- 0.24 (P less than 0.002). The suction cup itself induced astigmatism of 2.15 +/- 1.46 dpt (Canon Auto-Refractometer RK-1), which significantly differed from the initial astigmatism (0.32 +/- 0.23 dpt) (P less than 0.001*). The minus cylinder axis initially showed no preferential position. During artificial IOP elevation it shifted to 90 degrees...125 degrees (referred to the right eye) and thus ran about perpendicular to the meridian the suction cup was positioned on the eyeball. Effects of such refractive changes on differential light threshold and VEP amplitude are demonstrated. The results presented allow critical interpretation of previous IOP tolerance tests. The influence of suction cup oculopression on the perception of the white-noise field is shown in some glaucoma patients: the speed of the white-noise campimetry allows the increase in field defects during artificial IOP elevation to be followed up directly.
在17名眼部健康的受试者中，通过吸盘眼压法（负压：65 mmHg [8.67 kPa]）将眼压从最初的15.5±2.2 mmHg（2.07±0.29 kPa）人为升高至25.2±4.0 mmHg（3.36±0.53 kPa）（均值±标准差）。维持初始屈光矫正，视力（Landolt环）从最初的1.06±0.13降至0.39±0.22（P<0.001*[配对t检验]）。在吸盘在位的情况下进行新的验光显著提高了视力至0.64±0.24（P<0.002）。吸盘本身引起2.15±1.46 dpt的散光（佳能自动验光仪RK - 1），这与初始散光（0.32±0.23 dpt）有显著差异（P<0.001*）。初始时负柱镜轴没有优先位置。在人为眼压升高期间，它移至90度……125度（以右眼为准），因此大致垂直于吸盘在眼球上所放置的子午线。展示了这种屈光变化对微分光阈值和视觉诱发电位幅度的影响。所呈现的结果有助于对先前的眼压耐受性测试进行批判性解读。在一些青光眼患者中显示了吸盘眼压法对白色噪声视野感知的影响：白色噪声视野检查的速度使得在人为眼压升高期间视野缺损的增加能够被直接追踪。
