The health effects of mercury poisoning include central nervous system damage, hearing loss and vision problems.

汞中毒对健康的影响包括中枢神经系统损害、听力损失和视力问题。

youdao

Patients may report flashes of light, floaters, a curtain or shadow moving over the field of vision, and peripheral or central visual loss.

患者可能会看到闪光，漂浮物，帷幕或阴影遮挡住了视野，以及周边或中心视力丧失。

youdao

It does not affect peripheral vision, but the loss of clear central vision can rob a person of the ability to read, drive and recognise people's faces even without causing total blindness.

这种病不影响外周视力，但是明显的中心视力的丧失会剥夺患者阅读、驾驶的能力，甚至即使没有出现全盲的情况下也会是患者不能认出别人的脸。

youdao

With dry AMD, there is usually a gradual loss of central vision.

CNN: New techniques slow progress of age-related vision loss

It is the leading cause of severe vision loss in the over-50s in the developed world and affects central vision, needed for driving.

BBC: AMD is the leading cause of sight loss in the UK