# US 2025/0143570 A1 · Ergonomic Indirect Ophthalmoscope > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0143570 A1 - Document ID: US20250143570A1 - Status: Published application - Kind: A1 - Application number: 18/936,590 - Filed: 2024-11-04 - Published: 2025-05-08 - Earliest claimed: 2023-11-03 - Applicants: United States Government As Represented By The Department Of Veteran Affairs; The Regents Of The University Of California - Inventors: Lawrence Chan; Tyson Kim; William Rasper - Web page: https://patentgrep.com/patent/US20250143570A1 ## CPC - A61B 3/12: for looking at the eye fundus, e.g. ophthalmoscopes (A61B3/13 takes precedence) - A61B 3/1208: {Multiple lens hand-held instruments} - A61B 3/132: {in binocular arrangement} - A61B 2090/502: {Headgear, e.g. helmet, spectacles} - A61B 2560/0425: Ergonomically shaped housings (A61B2560/0418 takes precedence) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract An ophthalmoscope for viewing an eye of a patient, including an optical device with a housing having a bottom window, a rear window, and a front wall including a reflective inner surface. A top wall may include a first portion, and a second portion wherein the first portion includes a reflective inner surface. A pair of side walls extends between side edges of the bottom window, the rear window, the top wall, and the front wall. The reflective inner surfaces of the top wall and the front wall are configured to direct light rays that enter the bottom window from the eye of the patient out of the rear window into the eyes of the ophthalmologist. ## Claims ### Claim 1 An ophthalmoscope comprising: an optical device including a housing, the housing comprising: a bottom window; a rear window that extends upwardly from the bottom window; a front wall that extends upwardly from the bottom window, wherein the front wall includes a reflective inner surface and forms an interior angle with the bottom window; and a top wall including a first portion that extends from the rear window at an interior angle, wherein the first portion of the top wall includes a reflective inner surface; and a pair of side walls, each side wall extending between corresponding side edges of the bottom window, the rear window, the top wall, and the front wall, wherein the reflective inner surfaces of the first portion of the top wall and the front wall are configured to direct a light ray that enters the bottom window from the eye of a patient out through the rear window. ### Claim 2 (depends on 1) The ophthalmoscope of claim 1, wherein an interior angle defined between the bottom window and the rear window is an acute angle or a right angle. ### Claim 3 (depends on 2) The ophthalmoscope of claim 2, wherein an interior angle formed between the first portion of the top wall and the rear window is an obtuse angle, and an interior angle formed between the front wall and the bottom window is an obtuse angle. ### Claim 4 (depends on 3) The ophthalmoscope of claim 3, wherein the obtuse angle formed between the first portion of the top wall and the rear window is in a range of 95° to 115°, and the obtuse angle formed between the front wall and the bottom window is in a range of 95° to 115°. ### Claim 5 (depends on 2) The ophthalmoscope of claim 2, further comprising a binocular assembly including a housing, an entry window disposed on a front wall of the housing of the binocular assembly, and a pair of eyepieces disposed on a rear wall of the housing of the binocular assembly, wherein the rear window of the optical device is disposed adjacent the entry window of the binocular assembly. ### Claim 6 (depends on 5) The ophthalmoscope of claim 5, further comprising a mounting clip including a base plate and a pair of mounting arms extending upwardly therefrom, wherein the housing of the optical device is removably secured to the mounting arms of the mounting clip, and the mounting arms of the mounting clip are configured to removably secure the optical device to the housing of the binocular assembly. ### Claim 7 (depends on 6) The ophthalmoscope of claim 6, wherein: each mounting arm includes a vertical portion extending upwardly from the base plate and defining an elongated groove therein, and a horizontal portion extending rearwardly from a distal end of the vertical portion, and wherein the housing of the optical device includes a pair of elongated rails, each elongated rail extending along a corresponding side edge of the rear window, and each elongated rail of the housing of the optical device is slideably received in the elongated groove of a corresponding mounting arm. ### Claim 8 (depends on 7) The ophthalmoscope of claim 7, wherein the vertical portion of each mounting arm of the mounting clip is disposed adjacent a corresponding side edge of the entry window of the binocular assembly, and wherein the base plate is disposed adjacent a bottom surface of the housing of the binocular assembly. ### Claim 9 (depends on 5) The ophthalmoscope of claim 5, further comprising a head band, wherein the binocular assembly is operably secured to the head band. ### Claim 10 (depends on 9) The ophthalmoscope of claim 9, further comprising a light source disposed within the housing of the binocular assembly. ### Claim 11 (depends on 1) The ophthalmoscope of claim 1, wherein the top wall further comprises a second portion that extends between the first portion of the top wall and the front wall. ### Claim 12 (depends on 1) The ophthalmoscope of claim 1, wherein at least two of the front window, rear window, first portion of the top wall, and front wall are angularly adjustable relative to each other. ### Claim 13 (depends on 1) The ophthalmoscope of claim 1, further comprising a mounting clip including a base and a pair of mounting arms extending upwardly therefrom, wherein the housing of the optical device is configured to be removably secured to the mounting arms of the mounting clip, and wherein the mounting arms of the mounting clip are configured to removably secure the optical device to a housing of a binocular assembly. ### Claim 14 (depends on 13) The ophthalmoscope of claim 13, further comprising at least one catch configured to engage the housing of the binocular assembly. ### Claim 15 (depends on 14) The ophthalmoscope of claim 14, wherein the at least one pair of catches comprises a pair of catches, each catch extending inwardly from respective arms of pair of the mounting arms. ### Claim 16 An ophthalmoscope for use by an ophthalmologist when viewing an eye of a patient, comprising: a binocular assembly, comprising: a housing; an entry window disposed on a front wall of the housing; and a pair of eyepieces disposed on a rear wall of the housing, an optical device adjacent the entry window of the binocular assembly so that a light ray that enters the optical device from the eye of the patient is directed into one or both eyes of the ophthalmologist. ### Claim 17 (depends on 16) The ophthalmoscope of claim 16, the optical device including a top wall, a rear wall extending downwardly from the top wall, a front wall extending downwardly from the top wall, and a bottom wall extending from the rear wall to front wall, wherein the rear wall of the optical device is disposed adjacent the entry window of the housing. ### Claim 18 (depends on 17) The ophthalmoscope of claim 17, further comprising a head band, wherein the binocular assembly is operably secured to the head band. ### Claim 19 (depends on 18) The ophthalmoscope of claim 18, further comprising a light source disposed within the housing of the binocular assembly. ### Claim 20 (depends on 17) The ophthalmoscope of claim 17, wherein a portion of an inner surface of each of the top wall and the front wall is reflective.