Wave-front Analyzer KR-1W 2010 TOPCON CORPORATION All right - - PowerPoint PPT Presentation

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Wave-front Analyzer KR-1W 2010 TOPCON CORPORATION All right reserved Measure Refractometory Keratometry Aberrometry Topography Pupillometry 2010 TOPCON CORPORATION All right reserved Application - Cataract Cataract Surgery High Quality

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Wave-front Analyzer KR-1W

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Refractometory Keratometry Aberrometry Topography Pupillometry

Measure

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Application - Cataract Cataract Surgery High Quality analysis of Ocular condition. Persuasive tool for the patients.

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Application- Cornea Corneal Diseases High Quality analysis of Ocular condition. Helpful information to detect Keratoconus and dry eye patient. Persuasive tool for the patients.

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Clinical Scene 3 Contact Lens Helpful information for suitable Contact lens selection Helpful information for Dry eye Diagnosis.

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Clinical Scene 4 Optical Shop Easy screening for ocular abnormality. Helpful information for Night Vision glass prescription

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Hartmann-Shack Sensor

Customizable Screen Layout and Print format

Multiple Maps for versatile analysis Fully Automated Alignment 5 measurement in one machine 10.4 inches Large Touch Panel Display Topography with invisible Light Simultaneous Topography and Aberrometry

Features

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10 inches large panel is easier to see. Touch panel monitor enables measuring operation and multiple analysis easier.

Features

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Right and left automated alignment makes it easy for the

perator. Just touch the center of the pupil and it

automatically measures right and left eyes.

Features

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Fully Automated Alignment and 10.4 inches touch panel display

Save tech time with fully automated

alignment. Touching the center of the

pupil makes automatic start for both right and left eye.

Features

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Features ; Customizable Display Layout In addition to the regular Maps, preferred custom layout is easily made. (Up to 4 pages)

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Features; Customizable print format Preferred print format is customizable. (Up to 4 pages)

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Multiple Maps

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Multi Maps

Corneal Analysis Ocular Total Analysis High Order Aberration Axial Power Ocular Total Aberration

Find which factor affects the vision, cornea or Crystal lens

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Ocular Maps Show the information relating to Ocular maps.

Ocular Total Aberration Ocular High Order Aberration RMS (㎛) Amount of aberration

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RMS indication per pupil diameters

RMS (㎛) Amount of aberration

The KR-1W shows RMS data of 4mm (day) and 6mm (night), 4 and 6 mm are statically effective pupil size. In addition the KR-1W will calculates RMS based on live (actual) pupil size as well!

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Corneal Maps Indicates the information relating to the cornea.

Axial Power Instantaneous map RMS (㎛) Amount of aberration Corneal High Order Aberration

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Zernike Vector Maps Find which component of Zernike Polynomials has Ocular total high order aberration.

Ocular Total 3rd and 4th Order aberrations

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Component Maps

Ocular Total Corneal Internal

Various total ocular, cornea and internal shows where the visual problem exists.

RMS

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PSF/MTF Maps

Landolt's’ Ring Wavefront-PSF MTF

Patient’s visual simulations.

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Valuable information for the refractive Analysis

Hartman Image

Check the condition at measurement

Mire Rings Image Center Shift = Distance between corneal apex and center of pupil.

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RMS and S,C,A is able to compare at the same time. Valuable information for the refractive Analysis Photopic Scotopic Actual Pupil Size Total High Order Aberration Sphere, Cylinder, Axis data with each pupil diameter

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Valuable information for the refractive Analysis

These are calculated when the pupil size is 4 mm. Wavefront-PSF Normal High Order Aberration

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Valuable information for the refractive Analysis Contrast sensitivity of patient is visually observed.

Center Shift (Distance between corneal apex and center of pupil. MTF （X、Y） MTF (360°)

X Y

These are calculated when the pupil size is 4 mm.

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Valuable information for the refractive Analysis Contrast sensitivity of patient is visually observed.

Normal High Order Aberration

MENU Features

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Applications Continuous Measurement

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Continuous Measurement

This measuring function is expected for Dry Eye research. Tear Break Up condition can be observed with 10 times automatic continuous measurement.

MENU Features

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Dry Eye

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About Dry Eye Dry Eye is depression of chronic tear film stability brought on by single or multiple causes. Destabilization of tear film Corneal epithelium disorder Rack of tear supplement inflammation Infrequent blink

Depression of Corneal aesthesio

Incomplete eyelid close Surgery Trichiasis Surface wound Eye drops Contact lens Malfunction of meibomian Conjunctiva Tear film disappearing Factors

MENU Features

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Dry Eye Diagnosis Dry Eye is disease of epithelium brought by quantitative and qualitative abnormality of tear film.

2. Abnormity of tear film

① Shirrmer’s Test : Less than 5mm（５min.) ② Tear Break-Up time; Less than 5sec. ① Fluorescein stain score（Cornea + Conjunctiva): More than 3 points out of 9 points ② Rose-Bengal stain score; More than 3 points out of 9 points All １，２，３ are abnormal ⇒ Dry Eye 2 out of １，２ or ３ ⇒ Dry Eye Suspicious

3. Abnormity on

epithelium Dry Eye Research association 1995

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Dry Eye Diagnosis Dry Eye is chronic disease of epithelium and tear film cased by several factors, and it brings on abnormity of visual performance or discomfort of the eye. 1.Syndrome abnormity of visual performance or discomfort of the eye （positive).

2. Abnormity of tear film

① Silmer Test : Less than 5mm（５min.) ② Tear Break-Up time; Less than 5sec. ① Fluorescein stain score（Cornea + Conjunctiva): More than 3 points out of 9 points ② Rose-Bengal stain score; More than 3 points out of 9 points All １，２，３ are abnormal ⇒ Dry Eye 2 out of １，２ or ３ ⇒ Dry Eye Suspicious

3. Abnormity on

epithelium ③ Acid Green Stain Score More than 3 points out of 9 points Changed as below Dry Eye Research association 2006

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◆Shirrmer’s test… For the Dry Eye diagnosis, it is examined to find how much amount of tear is shorter than normal. It is normal when filter paper, hold in bottom lids, hydrated more than 10 mm in 5 minutes, but it is diagnosed to be dry eye when the paper hydrated less than 5 mm.

Shirrmer’s test

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Pictures from Tsurumi Univ Web Site：http://www.tsurumi- eye.com/dryeye/index.html

◆Rose-Bengal Stain…To see condition of the cornea and conjunctiva with the Rose- Bengal Stain. This stains red where mucin layer is not exist and dry, and it reveal where the tear film is dried out in the cornea and conjunctiva. ◆Fluorescein Stain…To see scar existence on the cornea and conjunctiva. ◆Acid Green.. To stain transformed epithelium ◆Fluorescein Stain…To see scar existence on the cornea and conjunctiva. ◆There are other tests to examine tear film stability or meibomian gland.

Fluorescein Stain Rose-Bengal Stain

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Current Dry Eye examination equipment issue

No instrument is able to evaluate dry eye with new

criteria. No product can evaluate visual performance right now.

DR-1：

– The DR-1 shows Oil film BUT（Break-Up Time), but it is qualitative. – The DR-1 cannot evaluate visual performance.

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Continuous Measurement The KR-1W would be able to evaluate the dry eye diagnosis method and result with a prescription in terms of visual

performance. Tohoku Univ, Prof.

Nishida.

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Stable Saw Teeth Dismay

Shizuka Koh Journal of the eye Vol.24 No.11 Nov.200

Study for Dry Eye

Time （sec) Time （sec) Time （sec)

Ocular Total

Coma Spherical

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Specifications

Refractive Power Measuring Range Hyperopia/Myopia：

25D～+22D (0.12D/0.25D steps)※

Astigmatism： 0D～±10D (0.12D/0.25D steps)※ Axial Angle： 0°～180°(1°/5°steps) Measuring Area： Φ8mm(Maximum) Minimum Pupil Size Φ2mm Corneal Curvature Measuring Range Radius Corneal Curvature： 5.00mm～10.00mm (0.01mm steps) Corneal Refractive Power 67.50D～33.75D (0.12D/0.25D steps) (Proviso: corneal refractive index = 1.3375) Corneal Astigmatic Power： 0D～±10D (0.12D/0.25D steps) Corneal Astigmatic Axial Angle： 0°～180° (1°/5°steps) Corneal Shape Measuring Area： Φ0.5mm～Φ9.2mm (Proviso Radius corneal curvature = 8mm) ＰＤ Measuring Range： 20～85mm (1mm steps) 外部接続端子： USB (IN/OUT), RS232C (OUT), LAN(IN/OUT)

※Proviso Hyperopia + Astigmatism ≦+23D、or Myopia + Astigmatism ≧-25D