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Pupil function and disorders that affect it

Medically reviewed by Johnstone M. Kim, MD Key Takeaways The pupil controls how much light enters the eye, allowing for clear ...
CNET

Eye Exams: Tests Performed, Machines Used and What to Expect

Whether you deal with conditions like dry, itchy eyes, blurred vision or cataracts -- or enjoy perfect 20/20 vision -- regular eye exams are essential for protecting your sight and maintaining eye ...