The balance of vasoconstrictor and vasodilator can maintain normal tension of blood vessel.

正常的血管张力要靠缩血管因子和舒血管因子之间的平衡来维护。

youdao

Objective: To observe and evaluate the therapeutic effect of integrative treatment for normal tension glaucoma(NTG).

目的：观察综合疗法治疗正常眼压青光眼的临床疗效。

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The morbidity of normal tension glaucoma (NTG) increases gradually. Ophthalmologists pay more and more attention to NTG.

正常眼压青光眼（NTG）的发病率逐渐增加，日益受到眼科工作者的重视。

youdao

Events that start tension headaches may include emotional pressure and the deeper than normal sadness called depression.

VOA: special.2010.03.30

He suggested the study could explain why there is a high level of normal-tension glaucoma in eastern Asia.

BBC: Food additives 'affect sight'

Normal-tension glaucoma is a form of the disease which leads to blindness without the usual increase in pressure inside the eyeball.

BBC: Food additives 'affect sight'