Most of the eye’s focusing imperfections are related to
nearsightedness, farsightedness, and/or astigmatism. However,
even when these conditions are eliminated, most eyes still have
flawed focusing known as higher order aberrations. In recent
years, lens implant manufacturers have designed lenses to help
eliminate these residual focusing problems. The new lenses are
known as wavefront lenses and help improve the quality of vision
during the day, and even more noticeably at night.
The most noticeable difference between
standard lenses and wavefront (also known as aspheric) lenses is
the contrast sensitivity. The
greater contrast sensitivity with the wavefront lenses means
less glare from lights at night, and more “punch” to
colours during the day.
There are a few different
aspheric intraocular lenses available.
Dr. Boyd chooses to use the
Technis1 lens. |
