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.