Browse eye and vision content in conditions.
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Cataract — clouding of the eye's natural lens — is the leading cause of blindness worldwide, affecting 95 million people. Completely correctable by phacoemulsification surgery with IOL implantation. Learn about symptoms, surgical indications, and lens options.
Conjunctivitis (pink eye) is the most common eye condition worldwide, caused by viral infections, bacteria, or allergies. Learn about adenovirus, chloramphenicol eye drops, antihistamine drops, and when to refer to ophthalmology.
Diabetic retinopathy is the leading cause of preventable blindness in working-age adults, affecting 1 in 3 people with diabetes. Learn about NPDR vs PDR staging, anti-VEGF injections (ranibizumab, aflibercept), laser photocoagulation, and annual screening.
Dry eye syndrome (DES) affects 5-50% of adults globally. Learn about aqueous-deficient vs evaporative dry eye, Schirmer's test, artificial tears, cyclosporin eye drops, and meibomian gland treatment.
Glaucoma is the leading cause of irreversible blindness globally, affecting 80 million people. Learn about intraocular pressure, open-angle vs. angle-closure glaucoma, prostaglandin analogue eye drops, laser trabeculoplasty, and trabeculectomy surgery.
Age-related macular degeneration (AMD) is the leading cause of central vision loss in adults over 50, affecting 200 million people worldwide. Learn about drusen, wet vs dry AMD, anti-VEGF injections, and Amsler grid monitoring.
Refractive errors are the most common cause of visual impairment globally, affecting 2.7 billion people. Includes myopia, hyperopia, astigmatism, and presbyopia. Corrected with glasses, contact lenses, or refractive surgery such as LASIK.
Retinal detachment is an ocular emergency where the retina separates from the eye wall, threatening permanent vision loss. Classic warning signs include flashes, floaters, and a curtain across vision. Surgical repair is urgent and highly effective.
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