Floaters refer to vitreous opacities, which can be classified into physiological vitreous opacities and pathological vitreous opacities. Physiological vitreous opacities generally do not affect vision. Their main symptom is that objects floating in front of the eyes become more noticeable in bright light and less visible in darker environments or at night. Drinking alcohol does not affect physiological vitreous opacities. However, pathological vitreous opacities do affect vision and require active treatment and examination to alleviate their impact on vision. For pathological vitreous opacities, it is generally advised not to consume alcohol, to follow a light diet, to rest adequately, and to undergo regular check-ups.