Joshua S Park

US Patent:

20230105065, Apr 6, 2023

Filed:

Dec 9, 2022

Appl. No.:

18/064052

Inventors:

- Chesterfiled MO, US
Joshua J. Park - Riverside CA, US

International Classification:

A61B 3/12
A61B 3/15
A61B 3/00

Abstract:

An instrument includes a housing with a lower hand-held portion having a user-input button and a display for displaying an MPOD score for the user. The instrument further includes a viewing tube coupled to the hand-held portion. The viewing tube terminates in an eye cup. The viewing tube is transverse to the lower hand-held portion and transmits light from a first light source towards a reflector and is reflected off the reflector through an aperture in a blocking wall and in a direction toward the macula. The first light source is an LED and provides two colored lights alternating at a frequency to create a flicker. The frequency is used to determine an amount of macular pigment of the macula of the user. A second light source is located in the first portion of the viewing tube and configured to illuminate a surface of the blocking wall.

US Patent:

20210393124, Dec 23, 2021

Filed:

Jun 17, 2021

Appl. No.:

17/304274

Inventors:

- Chesterfield MO, US
Joshua J. Park - Riverside CA, US

International Classification:

A61B 3/12
A61B 3/00

Abstract:

An instrument includes a housing with a lower hand-held portion having a user-input button and a display for displaying an MPOD score for the user. The instrument further includes a viewing tube coupled to the hand-held portion. The viewing tube terminates in an eye cup. The viewing tube is transverse to the lower hand-held portion and transmits light from a light source in a direction toward the macula. The light source is an LED and provides two colored lights alternating at an initial frequency that is not perceptible by the user. The frequency decreases from the initial frequency until the user activates the user-input button in response to a frequency at which the user perceives a flicker of the two colored lights. The frequency at the perceived flicker relates to the MPOD score of the user. The MPOD score correlates to the amount of macular pigment.