Patients successfully passed color vision tests and medical exams. Many achieved careers in military, railroads, and education. Some secured positions with salaries over $60,000
Glaucoma damages optic nerve and can lead to vision loss. Cataracts form in lens due to protein clumping, common after 65. Uveitis causes eye inflammation from infections or autoimmune diseases. Dry eyes occur when eyes can't produce enough tears. Presbyopia causes difficulty focusing on close objects