铅接触工人视野视网膜光敏感度损害的研究

目的 了解铅接触工人视野及视网膜光敏感度改变特点，探讨慢性铅接触对视功能的影响。方法 采用自动静态视野计对铅接触工人38例76眼进行中心300和周边300～600视网膜光敏感度阈值定量检测其视野指数、损害类型、形态、程度及平均敏感度。结果 铅接触工人视网膜光敏感度阈值明显高于正常眼，弥漫损害19．14％，局部损害14．47％，混合损害31．58％。主要为环状暗点和弥漫性损害，属轻、中度改变。多因素相关逐步回归分析结果，平均敏感度与年龄、尿铅量有显著相关性。结论 铅接触工人可致视网膜光敏感度的改变；程度与铅吸收量有关。

Change of retinal light sensitivity in workers exposed to lead

Objective To investigate the characteristics of retinal light sensitivity on workers exposed to lead.Methods Quantitatve check on 38 workers (76 eyes) exposed to lead with central 30 degrees and peripheral 30-60 degrees retinal light sensitivity by QZS 2 automaticperimeter made in China,average sensitivity degree and multi factor's relative stepwise regression analysis were made.Results The retinal light sensitivity threshold of chronic lead poisional workers is higher than that of ordinary person.Change type was diffuse damage 19.14%,local damage 14.47%,mixture damage 31.58%.Change shape was mainly annular scotoma and diffuse damage,change degree was mainly light and medium damage.The result of multi factor's relative stepwise regression analysis showed average sensitivity was relative to age and lead quantity in unine.Conclusion Lead exposed leads to damage to retinal light sensitivity,and the degree of damage to light sensitivity is relative to the quantity of lead absorbtion.