Pentax 2005 Annual Report Download - page 22

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Intraocular Lenses (IOLs)
In the Eye Care field, sales of IOLs are expected to continue to grow the most. IOLs are used in the
surgical treatment of cataracts. After the eye’s clouded lens has been removed, an IOL, which is an
artificial lens, is inserted in its place to restore vision. Advances in medical treatment have resulted in
increased general longevity, but this success has been accompanied by a sudden rise in the number of
age-related cataract patients, particularly in developed countries. IOLs have evolved from the earlier
hard type to the current mainstream lens, which is a soft foldable lens that can be inserted while
folded during surgery. By allowing the insertion of the lens through a smaller incision, the surgical cut
heals more quickly and causes much less discomfort to patients.
To meet the increasingly diverse needs and tastes of customers, Hoya is allocating additional
resources to the development of high-valued-added products, such as astigmatism-correcting contact
lenses, and multifocal contact lenses for middle-aged and older customers. Of these developments,
multifocal contact lenses make the most of Hoya’s advanced technologies, with a progressive lens
design*2 allowing one to see both nearby and distant objects within a natural field of vision, with no
abrupt boundaries.
With the amendment of the Pharmaceutical Affairs Law in April 2005, contact lenses become
highly regulated medical treatment items, and are treated much more carefully than before. As a
leading company in the industry, Hoya will ensure that its systems and structures continue to deliver
the most appropriate vision care to its customers.

*2. Progressive lenses are made with a
combination of spherical and aspherical
curves, and can only be produced using
precision, computer-controlled processes.

Full-size comparison
Foldable acrylic IOL
HOYA AF-1 (UY)
Yellow-tinted single-piece IOL Foldable acrylic IOL
HOYA AF-1 (UV)
Health Care Division