Item Brochure

PanOptic
TM
Ophthalmoscope Coaxial Ophthalmoscope
76
The Welch Allyn PanOptic Ophthalmoscope incorporates a patented*
Axial PointSource™ optical system. The optics system converges
the light to a point at the cornea, which allows the practitioner easy
entry into small pupils. The illumination pathway then diverges to
the retina, illuminating a very wide area of the fundus. The viewing
system enables the operator to view the illuminated area on virtually
the same axis, thus creating the widest field of view attainable in
undilated ophthalmoscopy.
The PanOptic has a focusing range from -20 to +20 diopters. The
Dynamic Focusing Wheel adjusts the focus in a continuous, smooth
action for more precise control and optimum view. This helps com-
pensate for patient or examiner refractive error, the position of the
ophthalmoscope and the changes in viewing requirements necessitated
by focusing on different points within the eye.
The patient side eyecup helps the practitioner establish and maintain the
proper viewing distance and provides stabilization for the view during the
exam. It also serves as the pivoting point for leverage in panning around the
retina. While in contact with the patient, the eyecup occludes ambient light,
eliminating interference from other light sources.
ADDITIONAL USES FOR THE PANOPTIC OPHTHALMOSCOPE
In addition to examination of the fundus, the ophthalmoscope is a useful
diagnostic aid in studying other ocular structures. The light beam can be
used to illuminate the cornea and the iris for detecting foreign bodies in
the cornea and irregularities of the pupil.
The PanOptic Ophthalmoscope features a Cobalt Blue Filter and add-on
Corneal Viewing Lens (model 11820 only), which together can be used
along with fluorescein dye applied to the cornea to look for abrasions
and foreign bodies on the cornea.
To attach the Corneal Viewing Lens:
1. Remove the patient eyecup.
2. Push and twist on the lens in place of the eyecup, until the
bottom’s ribs catch.
Refer to pages 8 and 9 to learn how to conduct an ophthalmic
exam with the PanOptic ophthalmoscope.
*U.S. PATENT NOS. 6,637,882; 6,527,390
Welch Allyn Coaxial ophthalmoscopes incorporate a patented* coaxial
optical system, allowing the axis of illumination to be coincidental
with the axis of vision into the retina, thereby eliminating annoying
shadows and facilitating examination through virtually any size pupil
or vitreous disorder. The fundus and interior anatomy of the eye are
viewed with precision and clarity.
Welch Allyn scopes offer a wide choice of 28 viewing lenses, ranging
from –25 to +40 diopters, with fast, accurate one-hand selection.
This helps compensate for patient or examiner refractive error, the
position of the ophthalmoscope and the changes in viewing require-
ments necessitated by focusing on different points within the eye.
Some coaxial models offer an additional crossed linear polarizing
filter/red-free filter switch that increases the versatility of this instru-
ment. When used in conjunction with available apertures, the coaxial
ophthalmoscope yields 15 possible apertures.
The illuminated lens dial enables the practitioner to check the lens being
used for a particular examination even in a darkened examination room.
The brow rest allows the practitioner to use his/her own eyeglasses
comfortably and safely. It also steadies the instrument while in use.
ADDITIONAL USES FOR THE COAXIAL OPHTHALMOSCOPE
In addition to examination of the fundus, the ophthalmoscope is a useful
diagnostic aid in studying other ocular structures. The light beam can
be used to illuminate the cornea and the iris for detecting foreign bodies
in the cornea and irregularities of the pupil.
Refer to pages 10 and 11 to learn how to conduct an ophthalmic
examination with the Coaxial ophthalmoscope.
When used correctly and regularly, the Welch Allyn ophthalmoscope is
one of the most effective diagnostic instruments available.
*U.S. PATENT NOS. 4,998,818; 4,526,449
APERTURES AND FILTERS
There is a wide range of practical apertures and filters to select from on
both the PanOptic and Coaxial ophthalmoscopes: small spot, large spot,
micro spot, slit aperture, red-free filter, cobalt blue filter, half-moon, and
fixation aperture. This selection of apertures covers all the practitioner’s
basic needs in an ophthalmoscope.
Micro Spot Aperture: Allows easy
entry into very small, undilated pupils.
Slit Aperture: Helpful in determining
various elevations of lesions, particu-
larly tumors and edematous discs.
Aperture Dial
PanOptic Soft Grip
Front
surface
mirror
Crossed
linear
polarizing
filter/red-free
filter switch
Aperture
selection dial
Dynamic
Focusing Wheel
Patented* Glare
Extinguishment
Patient Eyecup
Rubber
brow rest
Lens
selection
disc
Illuminated
lens indicator
On/Off switch
and rheostat
control
Practitioner SidePatient Side
Small Aperture: Provides easy view of the fundus
through an undilated pupil. Always start the examina-
tion with this aperture and proceed to micro aperture
if pupil is particularly small and/or sensitive to light.
Large Aperture: Standard aperture for dilated pupil
and general examination of the eye.
Half-Moon Aperture (PanOptic Model
11810 only): Provides a combination of
depth perception and field of view.
Fixation Aperture (Coaxial Model only):
The pattern of an open center and thin
lines permits easy observation of eccen-
tric fixation without masking the macula.
Cobalt Blue Filter: Blue filter used
with fluorescein dye permits easy
viewing of small lesions, abrasions,
and foreign objects.
Red-Free Filter: Excludes red
rays from examination field for
easy identification of veins,
arteries, and nerve fibers.
basic needs in an ophthalmoscope.