Ophthalmoscope

• US 4,065,208 A
• Filed: 10/29/1974
• Issued: 12/27/1977
• Est. Priority Date: 10/29/1974
• Status: Expired due to Term

• Current Assignee: Thomas A. Currey
• Original Assignee: Thomas A. Currey
• Inventors: Currey, Thomas A.
• Primary Examiner(s): Sacher, Paul A.
• Application Number:
  US05/518,612
• Time in Patent Office: 1,155 Days
• Field of Search: 351/6, 351/16, 350/96 B
• US Class Current: 351/219
• CPC Class Codes: A61B 3/103 for determining refraction, e.g. refractometers, skiascopes

Abstract

An ophthalmoscope for allowing an observer to clearly and easily view the retina of a patient'"'"'s eye. The ophthalmoscope has a hollow body member with an objective portion attached to one end thereof for placement over the patient'"'"'s eye and with an ocular portion attached to the other end thereof for allowing the observer to view the patient'"'"'s eye. The objective portion includes a contact lens member fixedly attached to the body member for contacting engagement with the cornea of the patient'"'"'s eye. A light source directs light into the body member and against a deflection member positioned in the body member adjacent the objective portion. The deflection member directs the light from the light source and the line of sight from the ocular portion into the retina of the patient'"'"'s eye. A magnification member is preferably positioned in the body member between the objective portion and the ocular portion for causing the patient'"'"'s eye to be magnified as the observer views the patient'"'"'s eye through the ocular portion.

Claims

1. An ophthalmoscope for allowing an observer to view the retina of a patient'"'"'s eye during retina surgery, said opthalmoscope comprising:

a. a straight, tubular body member having a first end portion and a second end portion;

b. objective means attached to said first end portion of said body member for placement over the patient'"'"'s eye, said objective means including a contact lens member fixedly attached to said first end portion of said body member for contacting engagement with the cornea of the patient'"'"'s eye;

c. ocular means attached to said second end portion of said body member for allowing the observer to view the patient'"'"'s eye through said objective means;

d. magnification means positioned in said body member between said objective means and said ocular means for causing the patient'"'"'s eye to be magnified as the observer views the patient'"'"'s eye through said ocular means, said magnification means including a plurality of magnification lens for varying the magnification of the patient'"'"'s eye;

e. light means for directing light through said objective means and against the patient'"'"'s eye to allow the patient'"'"'s eye to be illuminated, said light means including a light source and a fiber optic light-conducting member for guiding the light from said light source to the patient'"'"'s eye; and

;

f. deflection means positioned in said body member adjacent said objective means for directing the light from said fiber optic light-conducting member and the line of sight from said ocular means into the retina of the patient'"'"'s eye to allow the observer to clearly view the retina of the patient'"'"'s eye, said deflection means including means for allowing the angle the light from said fiber optic light-conducting member and the line of sight from said ocular means are being directed into the retina of the patient'"'"'s eye to be changed thereby allowing the observer to view a particular area of the retina of the patient'"'"'s eye.

2. The ophthalmoscope of claim 1 in which said deflection means includes prism means for directing the light from said fiber optic light-conducting member and the line of sight from said ocular means into the retina of the patient'"'"'s eye.

3. The ophthalmoscope of claim 1 in which said deflection means includes mirror means for directing the light from said fiber optic light-conducting member and the line of sight from said ocular means into the retina of the patient'"'"'s eye.