In almost  every DUI arrest warrant that I review , there is a common denominator. The defendant has  red , bloodshot , and glassy eyes. Alcohol is not the only cause for red bloodshot and watery eyes. Here is a complete list ;<!–


Possible Causes of Bloodshot Eyes at Night

  • Environmental toxins
  • Sun exposure
  • Eye Strain/overuse
  • Fatigue
  • Cigarette smoke
  • Chemical fumes
  • Overuse of contact lenses

Other Possible Causes of Bloodshot Eyes

  • Blepharitis
  • Pink eye/conjunctivitis
  • Corneal ulcers and infection
  • Corneal abrasion
  • Diabetes
  • Foreign bodies in the cornea and conjunctiva
  • Iritis
  • Ocular lacerations and intraocular foreign bodies
  • Uveitis
  • Blood thinning drugs
  • Stress and anxiety
  • Cold and flu
  • Allergies and hay fever
  • Pregnancy
  • Kidney failure/problems such as kidney stones
  • Liver disease
  • High blood pressure/hypertension
  • Glandular fever
  • Menstruation/menopause
  • Mumps
  • IBS
  • Dry Air
  • Infection
  • Improper diet
  • Deficiencies in Vitamin B2 (riboflavin), B6 (pyridoxine) and the amino acids histidine, lysine or phenylalanine

So , why bloodshot eyes are associated with alcohol. It should not be used in evidence since so many other factors can trigger bloodshot eyes.