| Molded from strong, lightweight ABS plastic, Gulden
Occluders use state of the art bonding techniques to insure
greater durability and have an easy cleaning gloss finish.
Gulden Occluders are available in black or white, have
a standard length of 25 cm, and are cupped to a 70mm radius.
Gulden Occluders are available in various configurations
and combinations. These include standard Occluders,
red lens Occluders, Pinhole
Occluders, Maddox
rod Occluders, Combo
Occluders, and Spielman
Occluders.
Gulden Combo
Occluders eliminate searching for the correct instrument.
One end of the occluder contains fixation targets (one
letter and one symbol .6m, .8m, 1.0m, 1.6m plus 2.0m
and 2.5m letters) on a rotary thumbwheel, which also
serves as an occluder. The occluder's handle contains
a PD rule, Palpebral scale, and corneal scale. The other
end of the occluder contains the red lens and Maddox
rod, together with Gulden's new and improved 1mm and
1.3mm multiple pinhole tests. Both multi-pinhole tests
are designed with counter-sunk holes that reduce hole
thickness to a thin edge. The improved target clarity
of these Occluders provides easy patient alignment.
The 1mm pinhole on these Occluders allows for routine
acuity testing, while the 1.3mm pinhole is for reduced
vision / suspect decreases retinal illumination.
Gulden Ophthalmics Spielman
Occluders enable more accurate visual acuity and
cover test procedures.
Patient performance during acuity testing is reduced
by suppression due to retinal rivalry of the occluded
eye. While white Occluders are designed to prevent this,
an even better solution has been found in Spielmann
Occluders.
With a lightweight molded black ABS plastic handle,
these Occluders have a lens made of a lightly frosted,
scratch resistant acrylic that degrades the acuity of
the non-tested eye while not inducing suppression effects.
The reading eye is thus tested with an absolute minimum
of interference from the fellow eye.
The examiner is also able to see the non-tested eye
through the frosting on the Occluders, making cover
testing more reliable and informative. Using these
Occluders,
the examiner can see the movement of the covered as
well as the uncovered eye and can see if the patient
is "squinting" under the paddle during testing.
References:
1. Fuhr PS et al. Ganzfeld Blankout occurs in bowl perimetry
and is eliminated by translucent occlusion. Arch Ophthalmol
108:983-8, 1990.
2. Wildsoet C et al. The effect of different forms monocular
occlusion on measures of central visual function. Ophthal
Physiol Optics 18: 263-8, 1998.
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PDF catalog if not ordering online
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