Study of automated perimetry

自动视野检查的研究

基本信息

批准号：
02670784
负责人：
MIYAKE Yozo
金额：
$ 1.34万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1991
项目状态：
已结题

项目摘要

We modified an automated projection static perimeter which can measure thresholds with lights of three different wavelengths in light-adapted as well as in dark adapted state. This instrument can evaluate relative states of rod and cone mechanisms respectively within the visual field range of 72 degrees. These modifications also enable dark-adapted two-color static perimetry quantitatively across the visual field including profile measurement.We studied the recovery of static sensitivity using modified Humphrey Field Analyzer (HFA) to measure cone and rod threshold in once detached retina. Also foveal cone densitometry was done in two groups with or without preoperative macular involvement accompanied with a good postoperative recovery of macular sensitivity. Preoperative deterioration detected with HFA was more prominent in rod sensitivity loss. Cone and rod sensitivity recovered rapidly in postoperative one month, followed by gradual recovery up to six months. Rod rocovery was slower than cone until postoperative three months. Among patients with macular involvement and a good recovery of macular sensitivity after surgery, the recovery of visual acuity was variable. Foveal cone densitometry revealed that poor recovery of Visual acuity was accompanied by poor regeneration of cone pigments. These results suggest that functional abnormalities of cone outer segments are present in macular detachment which persist in reattached macula even when the psychophysical sensitivity recovers to normal level.

我们修改了一个自动投影静态周长，该静态周长可以用光适应的三个不同波长以及在深色适应状态下测量阈值。该仪器可以在72度的视野范围内分别评估杆和锥机制的相对状态。这些修饰还使深色适应的两色静态构想在整个视野中定量地进行了数量测量。我们研究了使用改良的汉弗莱田间分析仪（HFA）的静态灵敏度恢复，以测量曾经分离的视网膜中的锥体和杆阈值。同样，在两组中，有或没有术前黄斑受累，并伴随着术后术后恢复黄斑敏感性，也进行了凹锥密度测定法。 HFA检测到的术前恶化在杆灵敏度丧失中更为突出。锥体和杆灵敏度在术后一个月迅速恢复，然后逐渐恢复长达六个月。 Rod Rocovery比Cone慢，直到术后三个月。在有黄斑受累和手术后黄斑敏感性良好恢复的患者中，视力恢复是可变的。凹锥锥密度测定法表明，视力恢复不良伴随着锥体色素再生不良。这些结果表明，黄斑脱离中存在锥外段的功能异常，即使心理物理敏感性恢复到正常水平，它仍会持续存在重新连接的黄斑。