### Chinese: 在手术过程中，医生可以根据手术需要和个人习惯，随时调节光斑的大小、光亮程度、光谱、颜色均匀性以及无影率。
### English: During the operation, the doctor can adjust the size, brightness, spectrum, color uniformity and shadowless rate of the light spot at any time according to the needs of the operation and personal habits.
### Errors: There is no error in the English translation.

### Improved English: During the operation process, doctors can adjust the size of light spot, brightness, spectrum, color uniformness and shadow-less degree any time according to demands of operation and personal habits.
