IP Library › Granted Patent US 7,219,998
Granted Patent B2
US 7,219,998 · App. 11/013,597 · Granted May 22, 2007

Dot radial ringed placido

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Quick Facts
Patent No.
US 7,219,998
App. No.
11/013,597
Granted
May 22, 2007
Kind
B2
Abstract

An ophthalmic placido pattern 10 is used to determine a curvature of an anterior surface of a cornea of an eye. The pattern 10 includes a series of alternating light and dark concentric rings 12 and 14 centered about a central point 16 . A series of shaped geometric shapes 18 and 20 are placed about at least some of the concentric rings 12 and 14 . The shapes 18 and 20 are of a contrasting color with respect to the ring 12 or 14 on which the shape 18 or 20 is placed.

Claims (7)

1. An ophthalmic placido pattern for use in determining a curvature of an anterior surface of a cornea of an eye, the pattern comprising:

a series of alternating light and dark concentric rings centered about a central point, wherein each concentric ring is continuous without any radial lines or edges;

a series of spaced geometric shapes placed about and within at least some of the concentric rings, wherein the shapes are of a contrasting color with respect to the ring on which the shape is placed.

2. The placido pattern of claim 1 , wherein the geometric shapes are circular dots.

3. The placido patter of claim 1 , wherein the geometric shapes are light colored relative to the rings onto which they are placed.

4. The placido pattern of claim 1 , wherein the geometric shapes are dark colored relative to the rings onto which they are placed.

5. The placido pattern of claim 1 , wherein geometric shapes are placed on every ring.

Assignments (14)
RELEASE OF SECURITY INTEREST Recorded Nov 20, 2025
From: THE BANK OF NEW YORK MELLON, AS NOTES COLLATERAL AGENT
To: ATON PHARMA, INC.; BAUSCH & LOMB INCORPORATED; BAUSCH & LOMB PHARMA HOLDINGS CORP.; COMMONWEALTH LABORATORIES, LLC; DOW PHARMACEUTICAL SCIENCES, INC.; ECR PHARMACEUTICALS CO., INC.; LABORATOIRE CHAUVIN S.A.S.; MEDICIS PHARMACEUTICAL CORPORATION; ONPHARMA INC.; ORAPHARMA, INC.; PRECISION DERMATOLOGY, INC.; SALIX PHARMACEUTICALS, LTD.; SALIX PHARMACEUTICALS, INC.; SANTARUS, INC.; SOLTA MEDICAL, INC.; SYNERGETICS USA, INC.; TECHNOLAS PERFECT VISION GMBH; VALEANT CANADA LP; VALEANT PHARMACEUTICALS INTERNATIONAL; VALEANT PHARMACEUTICALS INTERNATIONAL, INC.; VALEANT PHARMACEUTICALS NORTH AMERICA LLC; WIRRA IP PTY LIMITED; VALEANT PHARMA POLAND SP. Z O.O.; VALEANT PHARMACEUTICALS LUXEMBOURG S.A R.L.; VALEANT PHARMACEUTICALS IRELAND LIMITED
Reel/Frame 073637/0001 →
RELEASE OF SECURITY INTEREST Recorded Apr 8, 2025
From: BARCLAYS BANK PLC, AS COLLATERAL AGENT
To: SOLTA MEDICAL, INC.; PRECISION DERMATOLOGY, INC.; BAUSCH HEALTH IRELAND LIMITED (F/K/A/ VALEANT PHARMACEUTICALS IRELAND LIMITED); SALIX PHARMACEUTICALS, INC.; SALIX PHARMACEUTICALS, LTD; SANTARUS, INC.; MEDICIS PHARMACEUTICAL CORPORATION; HUMAX PHARMACEUTICAL S.A.; SOLTA MEDICAL IRELAND LIMITED; BAUSCH & LOMB MEXICO, S.A. DE C.V.; BAUSCH+LOMB OPS B.V.; BAUSCH HEALTH AMERICAS, INC.; BAUSCH HEALTH COMPANIES INC.; BAUSCH HEALTH HOLDCO LIMITED; BAUSCH HEALTH MAGYARORSZAG KFT (A/K/A BAUSCH HEALTH HUNGARY LLC); BAUSCH HEALTH POLAND SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA (F/K/A VALEANT PHARMA POLAND SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA); BAUSCH HEALTH US, LLC; BAUSCH HEALTH, CANADA INC. / SANTE BAUSCH, CANADA INC.; ICN POLFA RZESZOW SPOLKA AKCYJNA (A/K/A ICN POLFA RZESZOW S.A.); ORAPHARMA, INC.; PRZEDSIEBIORSTWO FARMACEUTYCZNE JELFA SPOLKA AKCYJNA (A/K/A PRZEDSIEBIORSTWO FARMACEUTYCZNE JELFA S.A.); SOLTA MEDICAL DUTCH HOLDINGS B.V.; V-BAC HOLDING CORP.; VRX HOLDCO LLC; 1261229 B.C. LTD.; 1530065 B.C. LTD.
Reel/Frame 070778/0199 →
OMNIBUS PATENT SECURITY RELEASE AGREEMENT (REEL/FRAME 045444/0634) Recorded Nov 2, 2022
From: THE BANK OF NEW YORK MELLON
To: BAUSCH & LOMB INCORPORATED; LABORATOIRE CHAUVIN S.A.S.; TECHNOLAS PERFECT VISION GMBH; THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY, DEPARTMENT OF HEALTH AND HUMAN SERVICES
Reel/Frame 061872/0295 →
RELEASE OF SECURITY INTEREST IN SPECIFIED PATENTS (REEL/FRAME 045444/0299) Recorded Oct 26, 2022
From: BARCLAYS BANK PLC
To: BAUSCH & LOMB INCORPORATED; TECHNOLAS PERFECT VISION GMBH; THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY, DEPARTMENT OF HEALTH AND HUMAN SERVICES; PF CONSUMER HEALTHCARE 1 LLC; LABORATOIRE CHAUVIN S.A.S.
Reel/Frame 061779/0001 →
SECURITY INTEREST Recorded Feb 26, 2018
From: ATON PHARMA, INC.; BAUSCH & LOMB INCORPORATED; BAUSCH & LOMB PHARMA HOLDINGS CORP.; COMMONWEALTH LABORATORIES, LLC; DOW PHARMACEUTICAL SCIENCES, INC.; ECR PHARMACEUTICALS CO., INC.; LABORATOIRE CHAUVIN S.A.S.; MEDICIS PHARMACEUTICAL CORPORATION; ONPHARMA INC.; ORAPHARMA, INC.; PRECISION DERMATOLOGY, INC.; SALIX PHARMACEUTICALS, LTD.; SALIX PHARMACEUTICALS, INC.; SANTARUS, INC.; SOLTA MEDICAL, INC.; SYNERGETICS USA, INC.; TECHNOLAS PERFECT VISION GMBH; VALEANT CANADA LP; VALEANT PHARMACEUTICALS INTERNATIONAL; VALEANT PHARMACEUTICALS INTERNATIONAL, INC.; VALEANT PHARMACEUTICALS NORTH AMERICA LLC; WIRRA IP PTY LIMITED; VALEANT PHARMA POLAND SP. Z O.O.; VALEANT PHARMACEUTICALS LUXEMBOURG S.A R.L.; VALEANT PHARMACEUTICALS IRELAND LIMITED
To: THE BANK OF NEW YORK MELLON, AS COLLATERAL AGENT
Reel/Frame 045444/0634 →
SECURITY INTEREST Recorded Feb 26, 2018
From: ATON PHARMA, INC.; BAUSCH & LOMB INCORPORATED; BAUSCH & LOMB PHARMA HOLDINGS CORP.; COMMONWEALTH LABORATORIES, LLC; DOW PHARMACEUTICAL SCIENCES, INC.; ECR PHARMACEUTICALS CO., INC.; LABORATOIRE CHAUVIN S.A.S.; MEDICIS PHARMACEUTICAL CORPORATION; ONPHARMA INC.; ORAPHARMA, INC.; PRECISION DERMATOLOGY, INC.; SALIX PHARMACEUTICALS, LTD.; SALIX PHARMACEUTICALS, INC.; SANTARUS, INC.; SOLTA MEDICAL, INC.; SYNERGETICS USA, INC.; TECHNOLAS PERFECT VISION GMBH; VALEANT CANADA LP; VALEANT PHARMACEUTICALS INTERNATIONAL; VALEANT PHARMACEUTICALS INTERNATIONAL, INC.; VALEANT PHARMACEUTICALS NORTH AMERICA LLC; WIRRA IP PTY LIMITED; VALEANT PHARMA POLAND SP. Z O.O.; VALEANT PHARMACEUTICALS LUXEMBOURG S.A R.L.; VALEANT PHARMACEUTICALS IRELAND LIMITED
To: BARCLAYS BANK PLC, AS COLLATERAL AGENT
Reel/Frame 045444/0299 →
SECURITY INTEREST Recorded Jul 19, 2017
From: BAUSCH & LOMB INCORPORATED
To: THE BANK OF NEW YORK MELLON
Reel/Frame 043251/0932 →
NOTICE OF SUCCESSION OF AGENCY Recorded Jan 9, 2015
From: GOLDMAN SACHS LENDING PARTNERS, LLC
To: BARCLAYS BANK PLC, AS SUCCESSOR AGENT
Reel/Frame 034749/0689 →
SECURITY AGREEMENT Recorded Sep 4, 2013
From: BAUSCH & LOMB INCORPORATED
To: GOLDMAN SACHS LENDING PARTNERS LLC, AS COLLATERAL AGENT
Reel/Frame 031156/0508 →
RELEASE OF SECURITY INTEREST Recorded Aug 13, 2013
From: CITIBANK N.A., AS ADMINISTRATIVE AGENT
To: WP PRISM INC. (N/K/A BAUSCH & LOMB HOLDINGS INC.); BAUSCH & LOMB INCORPORATED; ISTA PHARMACEUTICALS
Reel/Frame 030995/0444 →
SECURITY AGREEMENT Recorded Aug 6, 2012
From: BAUSCH & LOMB INCORPORATED; EYEONICS, INC.
To: CITIBANK N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 028728/0645 →
RELEASE OF SECURITY INTEREST Recorded Aug 5, 2012
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
To: BAUSCH & LOMB INCORPORATED
Reel/Frame 028726/0142 →
SECURITY AGREEMENT Recorded Mar 26, 2008
From: BAUSCH & LOMB INCORPORATED; WP PRISM INC.; B&L CRL INC.; B&L CRL PARTNERS L.P.; B & L DOMESTIC HOLDINGS CORP.; B&L FINANCIAL HOLDINGS CORP.; B&L SPAF INC.; B&L VPLEX HOLDINGS, INC.; BAUSCH & LOMB CHINA, INC.; BAUSCH & LOMB INTERNATIONAL INC.; BAUSCH & LOMB REALTY CORPORATION; BAUSCH & LOMB SOUTH ASIA, INC.; BAUSCH & LOMB TECHNOLOGY CORPORATION; IOLAB CORPORATION; RHC HOLDINGS, INC.; SIGHT SAVERS, INC.; WILMINGTON MANAGEMENT CORP.; WILMINGTON PARTNERS L.P.; B&L MINORITY DUTCH HOLDINGS LLC
To: CREDIT SUISSE
Reel/Frame 020733/0765 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 23, 2005
From: GROVE, DONALD CHARLES; ALLRED, LLOYD G.
To: BAUSCH & LOMB INCORPORATED
Reel/Frame 015952/0989 →