Cataract: clouding of the lens, signs and diagnosis
The lens is the clear lens of the eye, and with age it can become cloudy. We explain how vision changes, what increases the risk and how cataract is detected.
Ophthalmology is about vision and eye health: cataracts, glaucoma, red eye, eye strain from screens and routine eye exams. We explain which changes in vision should never be ignored and what an eye exam checks. The content is for reference and does not replace a doctor's examination.
The lens is the clear lens of the eye, and with age it can become cloudy. We explain how vision changes, what increases the risk and how cataract is detected.
Glaucoma causes no sensations for years, while vision narrows in the meantime. We explain how intraocular pressure works, who is at risk, and why regular eye checks replace symptoms.
Why eyes get tired from screens, where dryness comes from, and what the 20-20-20 rule is. We break down the symptoms of digital fatigue and the point at which you need an ophthalmologist.
What the doctor assesses during an appointment, why the pupil is dilated, how often to have an exam based on age and risk factors, and which tests are used in children.
Eye redness most often means conjunctivitis — viral, bacterial, or allergic. We break down what is contagious, how contact lenses behave, and when urgent care is needed.