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This week: Vision health, esophageal cancer, more

Vision researcher and ophthalmologist Amir Yazdanyar grew up with a mother who told him eating carrots was good for his eyes. Indeed, vitamin-A-rich carrots are part of a healthy diet, which can help maintain healthy eyes, he explains in this "HealthLink on Air" episode.

Yazdanyar discusses the leading cause of blindness: retinal diseases. He goes over risk factors and symptoms and tells about his research into diabetic retinopathy.

Also this week, otolaryngologist Brian Nicholas discusses mask-wearing and the challenges it presents for those with hearing loss. And, thoracic surgery chief Jason Wallen addresses esophageal cancer and the symptom that should not be ignored: difficulty swallowing. Listen this Sunday, December 13 at 6 a.m. and 9 p.m. for more.