Page 15 - The UK Guide to Laser Eye Surgery
P. 15

How the eye works
Long-sightedness can also be treated with laser eye surgery
Hyperopia occurs when your eyeball is slightly shorter or your cornea is flatter than required for clear vision. In contrast to myopia, this means that light focuses behind the retina, and the close vision
can appear blurry. In younger people, many hyperopic eyes can self-focus by utilising the ‘zoom’ intended for reading to compensate for the blurring.
As the eye ages, however, this ‘zoom’ gets weaker, so near vision becomes blurred. Later, distance vision becomes blurred
as well. This means that people with hyperopia often require reading glasses before their 40s, and then require both reading and distance glasses (or bifocals) from their 40s or 50s onwards. As with myopia, laser eye surgery can correct hyperopia by changing the shape of
the cornea so that its focusing power is matched to the length of the eye. Laser eye surgery can also correct ageing eyes (presbyopia). See next page

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