公开(公告)号：US11471042B2

公开(公告)日：2022-10-18

申请号：US16515495

申请日：2019-07-18

Applicant: Welch Allyn, Inc.

Inventor： William Shampine ,  Jennifer Bergstrom ,  Kathryn M. Coles ,  David L. Kellner ,  John A. Lane ,  Megan Schneider

IPC: A61B3/032 ,  A61B3/00 ,  G06F3/01 ,  G06V40/19 ,  G06V40/18

Abstract: A vision screening apparatus includes first and second display units, a processor, and instructions which are executable by the processor. The instructions, when executed by the processor, cause the apparatus to 1) carry out a photorefraction test of a subject, 2) estimate the subject's visual acuity based on the photorefraction test, 3) present the subject with a visual acuity check optotype for an interval of time, and 4) monitor for noncompliance with a visual acuity check protocol during at least part of the time interval.

公开(公告)号：US20210015358A1

公开(公告)日：2021-01-21

申请号：US16515495

申请日：2019-07-18

Applicant: Welch Allyn, Inc.

Inventor： William Shampine ,  Jennifer Bergstrom ,  Kathryn M. Coles ,  David L. Kellner ,  John Lane ,  Megan Schneider

IPC: A61B3/032 ,  A61B3/00 ,  G06F3/01 ,  G06K9/00

Abstract: A vision screening apparatus includes first and second display units, a processor, and instructions which are executable by the processor. The instructions, when executed by the processor, cause the apparatus to 1) carry out a photorefraction test of a subject, 2) estimate the subject's visual acuity based on the photorefraction test, 3) present the subject with a visual acuity check optotype for an interval of time, and 4) monitor for noncompliance with a visual acuity check protocol during at least part of the time interval.

公开(公告)号：US11246482B2

公开(公告)日：2022-02-15

申请号：US16175249

申请日：2018-10-30

Applicant: Welch Allyn, Inc.

Inventor： John A. Lane ,  Ervin Goldfain ,  Megan Schneider ,  Yaolong Lou ,  David L. Kellner ,  Mathias Mereles ,  Chris R. Roberts ,  Tyson B. Whitaker

IPC: A61B3/14 ,  A61B3/032 ,  A61B3/103 ,  A61B3/00 ,  G06T3/40

Abstract: A vision screening apparatus conducts a photorefraction ocular screening test to generate refractive error data. Based on the refractive error data, a Snellen equivalent is determined. An evaluated person distance from the vision screening apparatus is also determined and used to generate an adjusted optotype size. The vision screening apparatus displays the optotype, adjusted for the Snellen equivalent and the evaluated person distance.

公开(公告)号：US20190125183A1

公开(公告)日：2019-05-02

申请号：US16175249

申请日：2018-10-30

Applicant: Welch Allyn, Inc.

Inventor： John A. Lane ,  Ervin Goldfain ,  Megan Schneider ,  Yaolong Lou ,  David L. Kellner ,  Mathias Mereles ,  Chris R. Roberts ,  Tyson B. Whitaker

IPC: A61B3/103 ,  A61B3/00 ,  A61B3/14

Abstract: A vision screening apparatus conducts a photorefraction ocular screening test to generate refractive error data. Based on the refractive error data, a Snellen equivalent is determined. An evaluated person distance from the vision screening apparatus is also determined and used to generate an adjusted optotype size. The vision screening apparatus displays the optotype, adjusted for the Snellen equivalent and the evaluated person distance.