The phrase "vital impact" is correct and usable in written English.
You can use it to describe the importance of something. For example, "The teacher's guidance has had a vital impact on my education."
The growth of cities and industry had a vital impact on family life.
Currently, the vital impact of environmental pollution on economic, social and health dimensions has been recognized.
Ravel's entire output was small, which makes his vital impact on 20th-century music all the more remarkable.
USEPA researchers understand the vital impact of synchrotron research in reducing the uncertainty and dynamic nature of scientific knowledge.
Unsurprisingly, Southgate again expects Harry Kane and Sterling to have a vital impact on the pitch – as well as off it.
The inserted extra oxide made by the Si3N4 material has a vital impact on the modification of the electrical and thermal features in the proposed device.
(3) Both roughness and frozen temperature at shear have vital impacts not only on the maximum shear stress but also on the final shear stress.
Changes in the extent and amount of snow cover in Eurasia are of great interest because of their vital impacts on the global climate system and regional water resource management.
External factors, beyond the control of the entrepreneurs and enterprises, have vital impacts on the performance of the enterprises.
We hope that our data may have a vital clinical impact on future CD99-targeted therapies.
Using the EM-DAT, they identified adverse economic impacts only for droughts, whereas floods have vital positive impacts on the economic growth rate.
