The AcrySof® ReSTOR® IOL Finally, the opportunity for freedom from reading glasses and bifocals.
Until recently, life without reading glasses or bifocals was not an option for most cataract patients. You now have an
option. The AcrySof® ReSTOR® IOL is a unique technological innovation that can provide you with quality vision
throughout the entire visual spectrum – near through distance – with increased independence from reading glasses
or bifocals!

How does the AcrySof® ReSTOR® IOL work?
As we perform daily activities such as reading, watching television or working at the computer, our eyes are
constantly focusing on objects at varying distances – up close, far away and everything in-between. The ability to
quickly change focus throughout this range of vision is called accommodation. (Accommodation: The ability of the
eye's lens to change shape to focus on objects at various distances.)
Unfortunately, this ability diminishes as we grow older, causing us to become dependent on bifocals or reading
glasses. However, the AcrySof® ReSTOR® IOL was designed to provide quality near to distance vision by
combining the strengths of
apodized (Apodization: The gradual reduction or blending of the diffractive step
heights. The application of apodization to intraocular lenses is a patented process by Alcon and can only be found
in the AcrySof® ReSTOR® IOL.),
diffractive (Diffraction: The spreading of light. Occurs when light passes through
discontinuities (i.e. steps or edges). In an optical system, light can be diffracted to form multiple focal points or
images.), and
refractive technologies. Similar technology has been used for years in microscopes and telescopes
to improve image quality, and has now been patented for use in intraocular lenses by Alcon.

Apodized Diffractive
Apodization is the gradual tapering of the diffractive steps from the center to the outside edge of a lens to create a
smooth transition of light between the distance, intermediate and near focal points. Diffraction involves the bending
or spreading of light to multiple focal points as it passes through the lens. On the AcrySof® ReSTOR® IOL, the
center of the lens surface consists of an apodized diffractive optic. This means that the series of tiny steps in that
center area work together to focus light for
near (Near vision: Refers to focal points that are typically 16 inches or
closer to your eyes. This is also known as "reading vision." Items that typically fall within the near range of vision
are books, newspapers, and medicine bottles.),  through
distance vision (Distance vision: Refers to focal points
that are typically 7 feet or further from your eyes. Items that typically fall within the distance range of vision are
billboards, street signs, and movie screens.)

Refraction (Refraction: Redirection of light rays as they pass through the lens.)  involves the redirection of light
passing through the lens, to focus on the retina (Retina: The transmitter located at the back of your eye that sends
the images to your brain.). The refractive region of the AcrySof® ReSTOR® IOL bends light as it passes through
the lens to a focal point on the retina. This outer ring of the AcrySof® ReSTOR® IOL surrounds the apodized
diffractive region and is dedicated to focusing light for distance vision.
Apodized Diffractive
The apodized diffractive
optics are found within the
central 3.6 mm optic zone of
the lens. This area comprises
12 concentric steps of
gradually decreasing (1.3-0.2
microns) step heights that
allocate energy based on
lighting conditions and
activity, creating a full range
of quality vision – near to
The refractive
region of the optic
surrounds the
diffractive region.
This area directs
light to a distance
focal point for
larger pupil
diameter, and is
dedicated to
distance vision.
For more information on this specialized corneal surgical procedure call us or send us an email to schedule an appointment

Dr Rajesh Fogla DNB, FRCS, MMed  has been performing refractive cataract surgery since 1998. He has been performing cataract surgery
with multifocal intraocular lenses for the past 9 years.
If you desire perfect eyesight following cataract surgery or refractive lens exchange, you can schedule an appointment for clinical
evaluation and discussion with Dr Fogla.

Dr Fogla is available in the clinic on weekdays between 9am to 5pm, ( 6 - 8 pm with prior appointments only)

You can reach him on +91 9866076750 or
Cornea Clinic
Tel 91 40 23607777,  Fax 91 40 23608050 ,24 hours emergency services call 1066
Cornea Clinic - Eye Department - Apollo Hospitals, Jubilee Hills, Hyderabad 500 033, A P,  INDIA
Cornea Clinic - toll free number 1600 345 1066, other numbers 91 40 23608333 / 23548888 / 23606655