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  2. LASIK - Wikipedia

    en.wikipedia.org/wiki/LASIK

    A small percentage of patients may need further surgery because their condition is over- or under-corrected. Some patients need to wear contact lenses or glasses even after treatment. The most common reason for dissatisfaction in LASIK patients is chronic severe dry eye. Independent research indicates 95% of patients experience dry eye in the ...

  3. Laser blended vision - Wikipedia

    en.wikipedia.org/wiki/Laser_blended_vision

    Laser blended vision is a laser eye treatment which is used to treat presbyopia (ageing eyes; progressive loss of the ability to focus on nearby objects) or other age-related eye conditions. It can be used to help people that simply need reading glasses, and also those who have started to need bifocal or varifocal spectacle correction due to ...

  4. Photorefractive keratectomy - Wikipedia

    en.wikipedia.org/wiki/Photorefractive_keratectomy

    Patients that wear contact lenses will typically need to stop wearing these for a specified time before the procedure. PRK disadvantages include a longer recovery time for vision in contrast to LASIK. Another disadvantage is that patient may be required to apply steroid eye drops for a few weeks longer than that of a LASIK procedure.

  5. How to Get Rid of Dark Under-Eye Circles, For Real - AOL

    www.aol.com/lifestyle/rid-dark-undereye-circles...

    Although there are several causes of dark circles (we'll get to those below), there are also several ways we can address them, from eye cream to filler, and even just really good concealer when ...

  6. Keratoconus - Wikipedia

    en.wikipedia.org/wiki/Keratoconus

    In early stages of keratoconus, glasses or soft contact lenses can suffice to correct for the mild astigmatism. As the condition progresses, these may no longer provide the person with a satisfactory degree of visual acuity, and most practitioners will move to manage the condition with rigid contact lenses, known as rigid, gas-permeable, (RGP ...

  7. Astigmatism (optical systems) - Wikipedia

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

    Astigmatism (optical systems) An optical system with astigmatism is one where rays that propagate in two perpendicular planes have different foci. If an optical system with astigmatism is used to form an image of a cross, the vertical and horizontal lines will be in sharp focus at two different distances. The term comes from the Greek α- ( a ...

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