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US 6,783,239 B2Granted
Glare tester attachment
AssigneeNone recorded
InventorAlice T. Epitropoulos
Life of this patent
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AssigneeNone recorded
InventorAlice T. Epitropoulos
Estimating the term…
An ophthalmic glare tester for evaluating visual acuity under conditions of strong diffuse illumination is designed for convenient mounting on a conventional ophthalmic instrument such as a transilluminator or ophthalmoscope. The glare tester incorporates a generally concave reflector for providing diffuse illumination to an eye and a mounting for attachment to an ophthalmic instrument. The reflector includes a wall having an interior light-reflecting surface at least partially enclosing a hollow interior. The glare tester provides for conducting illumination from the ophthalmic instrument to the interior light reflecting surface of the reflector.
A glare tester attachment for use with a conventional hand-held ophthalmic instrument having a source of illumination, said glare tester attachment comprising:
A glare tester attachment for use with a conventional hand-held ophthalmic transilluminator having a probe and a source of illumination, said glare tester attachment comprising:
A glare tester attachment for use with a conventional hand-held ophthalmoscope having a source of illumination, said glare tester attachment comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Subjective types, i.e. testing apparatus requiring the active assistance of the patient: for testing visual acuity; for determination of…
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Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure: lamp handles
Term ended 1 May 2022 (estimated)
1. Field of the Invention
This invention relates to a glare tester and more specifically to a glare tester attachment suitable for use with a standard ophthalmic instrument.
2. Brief Description of the Prior Art
FIG. 1 illustrates a side elevational view of one embodiment of the glare tester of the invention mounted on a standard transilluminator.
FIG. 2 illustrates a front elevational view of the glare tester of FIG. 1.
FIG. 3 illustrates a side elevation partial cross sectional view of the embodiment of FIGS. 1 and 2, taken along the line 3—3 in FIG. 2.
According to the invention a glare tester incorporates
a generally concave reflector for providing diffuse illumination to an eye, the reflector comprising a wall having an interior light-reflecting surface at least partially enclosing a hollow interior chamber,
mounting means for removably supporting the reflector on a source of illumination; and