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Focal Point / Focus - Lasik Term and Glossary
More Lasik Terms
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Focal Point / Focus - Lasik Term and Glossary
More Lasik Terms
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In ophthalmology, the term focus refers to the refraction of
light rays by the cornea and the inner lens to a focal point
on the retina in a precise, natural manner that produces a
sharp, clear and colorful image. When the focal point is in
front of the retina, the refractive disorder known as
nearsightedness exists. If behind the problem is
farsightedness. If the light rays are distorted vertically
or horizontally, the problem is astigmatism.