JP4852316B2 - 眼科装置 - Google Patents
眼科装置 Download PDFInfo
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- JP4852316B2 JP4852316B2 JP2006029098A JP2006029098A JP4852316B2 JP 4852316 B2 JP4852316 B2 JP 4852316B2 JP 2006029098 A JP2006029098 A JP 2006029098A JP 2006029098 A JP2006029098 A JP 2006029098A JP 4852316 B2 JP4852316 B2 JP 4852316B2
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- tear
- tear fluid
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/101—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for examining the tear film
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- Biophysics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Eye Examination Apparatus (AREA)
Description
照明光を被検眼角膜上の涙液油層に投光する光学系と、
涙液油層からの反射光を受光し、涙液油層を撮像する撮像手段と、
撮像された涙液油層の画像を平滑化し、平滑化された涙液油層の輪郭を抽出して涙液油層の面積を求め、開瞼時点での該面積の時間変化率を涙液量を示す値として算出する画像処理装置と、を有することを特徴とする。
|SumPrev(x,y)−SumAfter(x,y)|>閾値
であれば、これを変曲点y(x)とする。これを 各x=0〜Xwidth(水平方向の画像サイズ)におけるy=0〜Ywidth(垂直方向の画像サイズ)で行い、順次変曲点を検出する。但し、眉毛、マスク2等の画像を避けるために、SumPrev(x,y)>黒閾値、SumAfter(x,y)>黒閾値の条件を満たすものを選択する。
7 CCDカメラ
8 画像処理装置
10 涙液油層
11 角膜
Claims (6)
- 照明光を被検眼角膜上の涙液油層に投光する光学系と、
涙液油層からの反射光を受光し、涙液油層を撮像する撮像手段と、
撮像された涙液油層の画像を平滑化し、平滑化された涙液油層の輪郭を抽出して涙液油層の面積を求め、開瞼時点での該面積の時間変化率を涙液量を示す値として算出する画像処理装置と、
を有することを特徴とする眼科装置。 - 前記涙液油層の画像の青成分が抽出され、青成分の画像に対して平滑化が行われることを特徴とする請求項1に記載の眼科装置。
- 涙液油層に現れる干渉模様とノイズが除去され、涙液油層の画像が平滑化されることを特徴とする請求項1又は2に記載の眼科装置。
- 平滑化された涙液油層の画像がラインスキャンされ、輝度変化を検出することにより涙液油層の輪郭を抽出して、涙液油層の面積が算出されることを特徴とする請求項1から3のいずれか1項に記載の眼科装置。
- 涙液油層の面積の経時変化を、涙液油層を粘弾性体としてモデル化することにより解析することを特徴とする請求項1から4のいずれか1項に記載の眼科装置。
- 前記涙液油層がフォークトモデルとしてモデル化されることを特徴とする請求項5に記載の眼科装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2006029098A JP4852316B2 (ja) | 2006-02-07 | 2006-02-07 | 眼科装置 |
Applications Claiming Priority (1)
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JP2006029098A JP4852316B2 (ja) | 2006-02-07 | 2006-02-07 | 眼科装置 |
Publications (2)
Publication Number | Publication Date |
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JP2007209370A JP2007209370A (ja) | 2007-08-23 |
JP4852316B2 true JP4852316B2 (ja) | 2012-01-11 |
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JP2006029098A Active JP4852316B2 (ja) | 2006-02-07 | 2006-02-07 | 眼科装置 |
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JP (1) | JP4852316B2 (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7758190B2 (en) | 2007-06-20 | 2010-07-20 | Tearscience, Inc. | Tear film measurement |
US8192026B2 (en) | 2007-06-20 | 2012-06-05 | Tearscience, Inc. | Tear film measurement |
JP5038925B2 (ja) * | 2008-01-29 | 2012-10-03 | 則彦 横井 | 眼科測定装置 |
US8888286B2 (en) | 2009-04-01 | 2014-11-18 | Tearscience, Inc. | Full-eye illumination ocular surface imaging of an ocular tear film for determining tear film thickness and/or providing ocular topography |
US9642520B2 (en) | 2009-04-01 | 2017-05-09 | Tearscience, Inc. | Background reduction apparatuses and methods of ocular surface interferometry (OSI) employing polarization for imaging, processing, and/or displaying an ocular tear film |
US8915592B2 (en) | 2009-04-01 | 2014-12-23 | Tearscience, Inc. | Apparatuses and methods of ocular surface interferometry (OSI) employing polarization and subtraction for imaging, processing, and/or displaying an ocular tear film |
US9888839B2 (en) | 2009-04-01 | 2018-02-13 | Tearscience, Inc. | Methods and apparatuses for determining contact lens intolerance in contact lens wearer patients based on dry eye tear film characteristic analysis and dry eye symptoms |
CA2757486C (en) | 2009-04-01 | 2018-07-24 | Tearscience, Inc. | Ocular surface interferometry (osi) devices, systems, and methods for imaging, processing, and/or displaying an ocular tear film and/or measuring ocular tear film layer thickness(es) |
JP5572407B2 (ja) * | 2010-01-29 | 2014-08-13 | 京都府公立大学法人 | 眼科装置及び画像分類プログラム |
JP6169375B2 (ja) * | 2012-03-06 | 2017-07-26 | 学校法人北里研究所 | 眼科測定方法、眼科測定装置および被検物質の評価方法 |
US9339177B2 (en) | 2012-12-21 | 2016-05-17 | Tearscience, Inc. | Full-eye illumination ocular surface imaging of an ocular tear film for determining tear film thickness and/or providing ocular topography |
WO2014179795A2 (en) | 2013-05-03 | 2014-11-06 | Tearscience, Inc. | Eyelid illumination systems and methods for imaging meibomian glands for meibomian gland analysis |
JP2015043929A (ja) * | 2013-08-29 | 2015-03-12 | 学校法人慶應義塾 | 知覚測定評価装置、知覚測定評価方法、及びプログラム |
US9795290B2 (en) | 2013-11-15 | 2017-10-24 | Tearscience, Inc. | Ocular tear film peak detection and stabilization detection systems and methods for determining tear film layer characteristics |
WO2019009277A1 (ja) * | 2017-07-04 | 2019-01-10 | 興和株式会社 | 涙液層評価方法、コンピュータプログラム、装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63160633A (ja) * | 1986-12-23 | 1988-07-04 | 日本電気株式会社 | 眼球運動検出装置 |
JPH06319792A (ja) * | 1993-05-17 | 1994-11-22 | Nitto Denko Corp | 外用貼付材および貼付製剤 |
JPH07136120A (ja) * | 1993-11-11 | 1995-05-30 | Kowa Co | 眼科装置 |
JP3556033B2 (ja) * | 1996-01-30 | 2004-08-18 | 興和株式会社 | 眼科装置 |
JP3699853B2 (ja) * | 1999-02-18 | 2005-09-28 | 株式会社ニデック | 眼科装置 |
WO2000051619A1 (en) * | 1999-03-01 | 2000-09-08 | Vista Scientific Llc | Mucin containing ophthalmic preparations |
JP4160685B2 (ja) * | 1999-04-01 | 2008-10-01 | 興和株式会社 | 眼科装置 |
JP3718104B2 (ja) * | 2000-05-01 | 2005-11-16 | 株式会社ニデック | 眼科装置 |
JP4404648B2 (ja) * | 2004-01-27 | 2010-01-27 | 株式会社ニデック | 眼科装置 |
EP1810234A2 (en) * | 2004-09-03 | 2007-07-25 | Panaseca, Inc. | Vision center kiosk |
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2006
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