Anushka Super Speciality Eye Hospital

Blue Light Glasses: Do We Really Need Blue Cut Lenses?

Blue Light Glasses

Blue light glasses, also called blue cut lenses, are marketed as essential for anyone using screens. While they can reduce glare and improve comfort, especially for long hours on computers or late-night screen use, they’re not magic shields for eye health. Eye strain is usually caused by reduced blinking, glare, and poor posture, not just blue light. Blue light may affect sleep by suppressing melatonin, so glasses may help in the evening, but reducing screen time is more effective. People who work long hours on screens, gamers, IT professionals, or those with persistent glare and headaches may benefit. Children, casual screen users, or those buying for trendiness likely don’t need them. Proper eye care—like the 20-20-20 rule, frequent blinking, correct lighting, posture, and regular eye exams—is far more important than any lens coating. In short, blue cut glasses are helpful for some, optional for many, and unnecessary for a few. They’re a tool for comfort, not a replacement for good screen habits and eye health.

Nystagmus: Causes, Types, Testing & Systemic Links Explained

Nystagmus

Nystagmus is an involuntary, rhythmic eye movement that can be horizontal, vertical, or circular. Some people are born with it (congenital), while others develop it later due to neurological, ocular, vestibular, or systemic causes. Types include congenital, manifest/latent, pendular, and jerk nystagmus, each offering clues to underlying conditions. Causes range from eye disorders like congenital cataract or albinism to neurological problems such as multiple sclerosis, stroke, brain tumors, or inner ear disorders. Diagnosis involves clinical examination, visual tests, electronystagmography (ENG), videonystagmography (VNG), and sometimes MRI or vestibular testing. Management depends on the cause and may include optical aids, medications, vision therapy, or surgery.