瞳孔形成

For improving the accurateness of theoretic analysis, a space variable method based on wave optics is presented.

为了提高理论分析的准确性，提出一种建立在波动光学基础上的空间变分析法，详细说明了形成新月形的空间变过程，并用计算机模拟出不同屈光度的近视眼瞳孔像及其沿子午方向的光强分布。

A transparent, biconvex body of the eye between the iris and the vitreous humor that focuses light rays entering through the pupil to form an image on the retina.

晶状体，水晶体：眼球中一种透明的双面凸体，位于虹膜与玻璃体之间，它可使穿过瞳孔进入眼球的光线聚集在视网膜上来形成图象

Results Forty three cases were died from cerebral hernia before operation 1 week, in which 30 cases with bilateralis mydriasis, and the other 13 cases with half mydriasis. Twenty seven cases died from various complication during 2～3 weeks, in which 11 cases with pulmonary infection, 6 cases with upper gastrointestinal hemorrhage, 5 cases with acute renal failure, 3 cases with multiple organ failure, 1 case with heart failure, 1 case with metabolic disorder of body fluid.

结果术 脑疝形成使中枢衰竭在1周内死亡者43例，其中双侧瞳孔散 30例，单侧瞳孔散大13例；各并发症在2~3周内死亡者27例：肺部感染11例，上消化道出血6例，急性肾功能衰竭5例，脏器功能衰竭3例，心功能衰竭1例，体液代谢紊乱1例。

Results there were unconsciousness, respiratory rhythm disturbance and hyporeflexia of pupil light reflex immediately after injury, and reactiveness decrease and activity retardation still existed even after resuming consciousness. at anatomical scene, subarachnoid hemorrhage or cerebroventricular haemorrhage were widespread. at an early stage, there were swelling, collapse, and axonal retraction ball formation at cortico-medulla junction, callosum, brainstem, and cerebellar white matter under microscope. but at the later stage, gitter cell proliferation and nest-like aggregation were major pathophysiological changes at focal brain tissue.

结果 伤后大鼠均即刻出现原发昏迷，其中2只于损伤后20 min内死亡，余持续时间1-30 min不等；伤后大鼠呼吸节律紊乱，瞳孔对光反射减弱或消失，醒后均有程度不等的反应性下降，肢体活动迟缓；肉眼可见广泛蛛网膜下腔出血或脑室出血；光镜下可见皮髓交界区、胼胝体区、脑干、小脑白质等部位的神经轴索有不同程度的肿胀、断裂、轴索球形成，后期有小胶质细胞增生，局部呈巢样聚集。

Presence of pseudoexfoliation syndrome, nuclear hardness, pupil size, phaco time, effective phaco time, systemic diseases, perioperative complications capsulorhexis rupture, zonular dialysis, posterior capsule rupture .

假性囊膜剥脱综合症，核硬度，瞳孔大小，超声时间，实际超声时间，系统性疾病，术中并发症(囊膜撕裂，悬韧带断裂，后囊破裂伴玻璃体丢失)，IOL植入位置和术后并发症作为膜形成的危险因素分析。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。