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  2. Healthgrades - Wikipedia

    en.wikipedia.org/wiki/Healthgrades

    The information Healthgrades provides includes information on doctors' board certifications, types of procedures offered, and which insurance plans offices accept. [ 7 ] [ 26 ] However, information such as healthcare provider degrees is often inaccurate on the site, significantly limiting its use and raising concern that other information on ...

  3. From PPO to HMO, what's the difference between the 5 most ...

    www.aol.com/news/ppo-hmo-whats-difference...

    Doctors and Clinicians analyzed KFF data and resources from the Department of Health and Human Services to break down the common forms of insurance plans in the U.S. to help consumers navigate ...

  4. Preferred provider organization - Wikipedia

    en.wikipedia.org/wiki/Preferred_provider...

    In U.S. health insurance, a preferred provider organization (PPO), sometimes referred to as a participating provider organization or preferred provider option, is a managed care organization of medical doctors, hospitals, and other health care providers who have agreed with an insurer or a third-party administrator to provide health care at ...

  5. Ophthalmology - Wikipedia

    en.wikipedia.org/wiki/Ophthalmology

    System: Eye and visual system: Significant diseases: Cataract, retinal disease (including diabetic retinopathy and other types of retinopathy), glaucoma, corneal disease, eyelid and orbital disorders, uveitis, strabismus and disorders of the ocular muscles, ocular neoplasms (malignancies, or cancers, and benign eye tumors), neuro-ophthalmologic disorders (including disorders of the optic nerve)

  6. List of systemic diseases with ocular manifestations - Wikipedia

    en.wikipedia.org/wiki/List_of_systemic_diseases...

    There are many diseases known to cause ocular or visual changes. Diabetes , for example, is the leading cause of new cases of blindness in those aged 20–74, with ocular manifestations such as diabetic retinopathy and macular edema affecting up to 80% of those who have had the disease for 15 years or more.

  7. Astigmatism (optical systems) - Wikipedia

    en.wikipedia.org/wiki/Astigmatism_(optical_systems)

    Astigmatism causes difficulties in seeing fine detail. Astigmatism can be often corrected by glasses with a lens that has different radii of curvature in different planes (a cylindrical lens), contact lenses, or refractive surgery. [5] Astigmatism is quite common. Studies have shown that about one in three people suffers from it.