(388 days)
No
The description focuses on traditional image processing routines and high-speed camera analysis of physical deformation, without mentioning AI or ML terms or concepts.
No
The device is intended for measurement and evaluation, indicating a diagnostic rather than therapeutic purpose.
Yes
The device is described as measuring intra-ocular pressure and evaluating corneal thickness, both of which are diagnostic measurements used in assessing ocular health.
No
The device description clearly outlines hardware components like an air puff mechanism, a high-speed camera, and illumination, which are integral to its function. While it performs image processing, it is not solely software.
Based on the provided information, the Corvis ST is not an In Vitro Diagnostic (IVD) device.
Here's why:
- IVD Definition: In Vitro Diagnostic devices are used to examine specimens derived from the human body (like blood, urine, tissue) to provide information for diagnosis, monitoring, or screening.
- Corvis ST Function: The Corvis ST directly measures physical properties of the eye (intra-ocular pressure and corneal thickness) using non-contact methods (air puff, light, and imaging). It does not analyze biological specimens taken from the body.
- Intended Use: The intended use describes measuring physical characteristics of the eye, not analyzing biological samples.
Therefore, the Corvis ST falls under the category of an ophthalmic device used for diagnostic purposes, but it is not an IVD.
N/A
Intended Use / Indications for Use
The Corvis ST is intended to measure the intra-ocular pressure of the eye in patients with less than 3 diopters of corneal astigmatism. In addition, the Corvis ST is designed to photograph the eye and take Scheimpflug images of the anterior segment of the eye to evaluate the thickness of the cornea.
Product codes (comma separated list FDA assigned to the subject device)
HKX, MXK
Device Description
The Corvis ST performs the following two functions: Tonometry and Pachymetry.
Tonometry: The Corvis ST measures intraocular pressure without contact with the eye by applying an air f your to the eye. The eye is illuminated and during the air puff, a high-speed camera records the movement of the eye with more than 4000 images per second. The high-speed camera analyzes a sequence of 140 Scheimpflug images of the cornea to determine intra-ocular pressure.
Pachymetry: The Corvis ST measure corneal thickness and shape based on sectional images when the cornea is not influenced by the air puff. The pachymetry measurements of the Corvis ST and the cleared Oculus predicate use the same image processing routine for analysis to obtain corneal thickness measurements.
Tonometry and pachymetry functions can be performed during the same evaluation or separately.
Mentions image processing
Yes
Mentions AI, DNN, or ML
Not Found
Input Imaging Modality
High-speed camera recording of eye movement (more than 4000 images per second), Scheimpflug images of the anterior segment of the eye.
Anatomical Site
Eye (cornea, anterior segment)
Indicated Patient Age Range
Not Found
Intended User / Care Setting
Not Found
Description of the training set, sample size, data source, and annotation protocol
Not Found
Description of the test set, sample size, data source, and annotation protocol
Clinical Data - Pachymetry:
"Side-by-side testing of Central Corneal thickness (Apex): Corvis ST vs. Pachycam" was an internal study to evaluate the correlation between the measurement data of the FDA cleared device Pachycam (K041841) and the Corvis ST.
The study evaluated the apical thickness of the center (Pachymetry). Both eyes of each subject were measured and every eye was measured three times on the same device.
The number of subjects was 51, so 102 eyes were examined. In the study, subjects were chosen with corneal thicknesses from 463 um to 635 um.
Clinical Data - Tonometry:
Testing was performed in conformance with ANSI Z80.10-2009 (in accordance with FDA's extent of recognition) and EN ISO 8612:2009.
The aim of this evaluation was to compare the intraccular pressure (IOP) results measured by the Corvis ST tonometer with those obtained by the Goldmann applanation tonometer (Haag-Streit) over three IOP-groups.
Total 120 eyes (40 eyes per group) were investigated across IOP ranges: 7-16 mmHg, >16-=23 mmHg.
Bench Testing - Tonometry:
The company performed tonometric testing to evaluate the accuracy and reproducibility of the Corvis ST in its intended measuring range in accordance with FDA's extent of recognition section 4.2.3 "Bench Assessments of Bias and Precision" of ANSI Z80.10-2009, Ophthalmic Instruments -Tonometers (Ophthalmic). The testing was performed by measuring a manometric controlled test eye, which consisted of a membrane enclosed with a water filled pressure chamber. The pressure in the test chamber was adjusted by a hydrostatic head and controlled manometrically by an attached calibrated pressure sensor as reference. The measurements were taken using the Corvis ST device and additionally verified by a reference tonometer.
Bench Testing - Pachymetry:
The focus of this internal study was to demonstrate that the performance data of the Corvis ST is accurate and reproducible over the complete stated measurement range of 300 um. The testing was performed by measuring several glass plates with several known thicknesses, known scattering, and known refraction indices.
Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)
Clinical Data - Pachymetry:
Study type: Internal study, Side-by-side testing of Central Corneal thickness (Apex): Corvis ST vs. Pachycam.
Sample size: 51 subjects, 102 eyes.
Key results: The correlation coefficient of the representative apical thickness value was > 0.98. The overall mean (+/- standard deviation) difference of the Corvis ST apical thickness measurements to the Pachycam was -0.10 ± 4.48 µm. The within-eye repeatability (standard deviation) of the Corvis ST for each set of triplicate results per eye per subject was calculated to be 3.03 µm.
Clinical Data - Tonometry:
Study type: Comparison study against Goldmann applanation tonometer (GAT).
Sample size: 120 eyes.
Key results: The mean deviation between the test tonometer and the reference tonometer was 0.2 ± 2.4 mmHg. 96.7 % of the investigated eves were within the limits of ± 5 mmHo, no eve had a deviation to the reference tonometer of more than 7.5 mmHq. The Corvis ST meets all the requirements EN ISO 8612:2009 and to ANSI Z80.10-2009 (in accordance with FDA´s extent of recognition) if eyes with astigmatism >3 D are excluded in accordance with EN ISO 8612:2009. The agreement between the Corvis ST and the Goldmann applanation tonometer (GAT) is satisfactory, with a standard deviation of the difference between the Corvis measurement and the Goldmann measurement of 2.4 mmHq.
Bench Testing - Tonometry:
Study type: Bench testing to evaluate accuracy and reproducibility.
Key results: In the tonometry bench test, the correlation coefficient of the representative IOP value was > 0.99. The overall difference of the Corvis ST measurements to the manometric adjusted pressure values was -0.26 ± 1.1 mmHg. The test bench results show that none of the paired differences between the reference tonometer reading and the test tonometer reading for each manometric adjusted pressure value are greater than +/- 5 mmHg and also that none of the paired differences between the reference tonometer reading and the test tonometer reading for each pressure range are greater than +/- 7.5 mmHg.
Bench Testing - Pachymetry:
Study type: Internal bench study to demonstrate accurate and reproducible performance.
Key results: In the pachymetry bench test, the correlation coefficient of the representative pachymetry value was > 0.99. The overall difference of the Corvis ST measurements to the reference thickness values was -0.43 ± 3.85 µm.
Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)
Not Found
Predicate Device(s): If the device was cleared using the 510(k) pathway, identify the Predicate Device(s) K/DEN number used to claim substantial equivalence and list them here in a comma separated list exactly as they appear in the text. List the primary predicate first in the list.
Nidek Incorporated, Non-Contact-Tonometer NT 1000 (K913189), Oculus Optikgeraete GmbH, Pachycam (K041841)
Reference Device(s): Identify the Reference Device(s) K/DEN number and list them here in a comma separated list exactly as they appear in the text.
Not Found
Predetermined Change Control Plan (PCCP) - All Relevant Information for the subject device only (e.g. presence / absence, what scope was granted / cleared under the PCCP, any restrictions, etc).
Not Found
§ 886.1930 Tonometer and accessories.
(a)
Identification. A tonometer and accessories is a manual device intended to measure intraocular pressure by applying a known force on the globe of the eye and measuring the amount of indentation produced (Schiotz type) or to measure intraocular tension by applanation (applying a small flat disk to the cornea). Accessories for the device may include a tonometer calibrator or a tonograph recording system. The device is intended for use in the diagnosis of glaucoma.(b)
Classification. Class II.
0
K113066 510(k) SUMMARY Oculus Optikgeraete GmbH Corvis ST
Submitter's Name, Address, Telephone Number, Contact Person and Date Prepared
NOV
........
1
Oculus Optikgeraete GmbH Muenchholzhaeuser Strasse 29 35582 Wetzlar Germany
| Phone: | +49(0)641 2005-0 |
|---|---|
| Facsimile: | +49(0)641 2005-255 |
| Contact Person: | Eckhard Loh |
| Date Prepared: | November 7, 2012 |
Name of Device and Name/Address of Sponsor
Corvis ST
Oculus Optikgeraete GmbH Muenchholzhaeuser Strasse 29 35582 Wetzlar Germany
Common or Usual Name
Non-Contact-Tonometer (Product Code HKX), Pachymeter (Product Code MXK)
Classification Name
21 C.F.R. §886.1930, Tonometer (AC Powered), Analysis, Anterior Segment
Predicate Devices
Nidek Incorporated, Non-Contact-Tonometer NT 1000 (K913189) Oculus Optikgeraete GmbH, Pachycam (K041841)
Intended Use / Indications for Use
The Corvis ST is intended to measure the intra-ocular pressure of the eye in patients with less than 3 diopters of corneal astigmatism. In addition, the Corvis ST is designed to photograph the eye and take Scheimpflug images of the anterior segment of the eye to evaluate the thickness of the cornea.
1
Technological Characteristics
The Corvis ST performs the following two functions:
Tonometry
The Corvis ST measures intraocular pressure without contact with the eye by applying an air f your to the eye. The eye is illuminated and during the air puff, a high-speed camera records the movement of the eye with more than 4000 images per second. The high-speed camera analyzes a sequence of 140 Scheimpflug images of the cornea to determine intra-ocular pressure.
Pachymetry
The Corvis ST measure corneal thickness and shape based on sectional images when the cornea is not influenced by the air puff. The pachymetry measurements of the Corvis ST and the cleared Oculus predicate use the same image processing routine for analysis to obtain corneal thickness measurements.
Tonometry and pachymetry functions can be performed during the same evaluation or separately.
Performance Data
Clinical Data - Pachymetry
The "Side-by-side testing of Central Corneal thickness (Apex): Corvis ST vs. Pachycam" was an internal study to evaluate the correlation between the measurement data of the FDA cleared device Pachycam (K041841) and the Corvis ST.
The study evaluated the apical thickness of the center (Pachymetry). Both eyes of each subject were measured and every eye was measured three times on the same device.
The number of subjects was 51, so 102 eyes were examined. In the study, subjects were chosen with corneal thicknesses from 463 um to 635 um.
Results:
The correlation coefficient of the representative apical thickness value was > 0.98. The overall mean (+/- standard deviation) difference of the Corvis ST apical thickness measurements to the Pachycam was -0.10 ± 4.48 µm. The within-eye repeatability (standard deviation) of the Corvis ST for each set of triplicate results per eye per subject was calculated to be 3.03 µm.
Clinical Data - Tonometry
Testing was performed in conformance with ANSI Z80.10-2009 (in accordance with FDA's extent of recognition) and EN ISO 8612:2009.
The aim of this evaluation was to compare the intraccular pressure (IOP) results measured by the Corvis ST tonometer with those obtained by the Goldmann applanation tonometer (Haag-Streit) over three IOP-groups.
2
Results:
| Difference IOP (Corvis ST) - IOP (GAT) | ||||
|---|---|---|---|---|
| Group | Number of eyes | IOP | ||
| (mmHg) | Difference Corvis ST to reference | |||
| tonometer (GAT) | Within limits | |||
| (5mmHg) | ||||
| 1 | 40 | 7 - 16 | 0.8 ± 2.3 mmHg | 39 (97.5 %) |
| 2 | 40 | > 16 - 3 D are excluded in accordance with EN ISO 8612:2009. The agreement between the Corvis ST and the Goldmann applanation tonometer (GAT) is satisfactory, with a standard deviation of the difference between the Corvis measurement and the Goldmann measurement of 2.4 mmHq. |
Bench Testing - Tonometry
The company performed tonometric testing to evaluate the accuracy and reproducibility of the Corvis ST in its intended measuring range in accordance with FDA's extent of recognition section 4.2.3 "Bench Assessments of Bias and Precision" of ANSI Z80.10-2009, Ophthalmic Instruments -Tonometers (Ophthalmic). The testing was performed by measuring a manometric controlled test eye, which consisted of a membrane enclosed with a water filled pressure chamber. The pressure in the test chamber was adjusted by a hydrostatic head and controlled manometrically by an attached calibrated pressure sensor as reference. The measurements were taken using the Corvis ST device and additionally verified by a reference tonometer.
Results:
In the tonometry bench test, the correlation coefficient of the representative IOP value was > 0.99. The overall difference of the Corvis ST measurements to the manometric adjusted pressure values was -0.26 ± 1.1 mmHg. The test bench results show that none of the paired differences between the reference tonometer reading and the test tonometer reading for each manometric adjusted pressure value are greater than +/- 5 mmHg and also that none of the paired differences between the reference tonometer reading and the test tonometer reading for each pressure range are greater than +/- 7.5 mmHg.
3
Bench Testing - Pachymetry
The focus of this internal study was to demonstrate that the performance data of the Corvis ST is accurate and reproducible over the complete stated measurement range of 300 um. The testing was performed by measuring several glass plates with several known thicknesses, known scattering, and known refraction indices.
Results:
In the pachymetry bench test, the correlation coefficient of the representative pachymetry value was > 0.99. The overall difference of the Corvis ST measurements to the reference thickness values was -0.43 ± 3.85 µm.
Substantial Equivalence
The Corvis ST is substantially equivalent to the predicate devices. The Corvis ST has the same intended use, technological characteristics, and principles of operation as its predicate devices. Bench and clinical testing demonstrate substantially equivalent performance to the predicates. The minor technological differences between the Corvis ST and its predicate raise no new issues of safety and effectiveness. Performance data demonstrate that the Corvis ST is as safe and effective as the predicate devices. Thus, the Corvis ST is substantially equivalent.
4
DEPARTMENT OF HEALTH & HUMAN SERVICES
Public Health Service
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-002
OCULUS Optikgeraete GmbH % Mr. Eckhard Loh Regulatory Affairs Manager Munchholzhauser Str. 29 Wetzlar Germany D-35582
Re: K113066
Trade/Device Name: OCULUS Corvis® ST model 72210 Regulation Number: 21 CFR 886.1930 Regulation Name: Tonometer, AC-powered Regulatory Class: Class II Product Code: HKX, MXK Dated: October 24, 2012 Received: October 24, 2012
Dear Mr. Loh:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
5
Page 2 -- Mr. Eckhard Loh
Please be advised that FDA's issuance of a substantial equivalence determination docs not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm.
Sincerely yours,
Kesia Y. Alexander
Malvina B. Eydelman, M.D. Director Division of Ophthalmic and Ear, Nose and Throat Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
6
| Corvis ST | Indications for Use
Statement | Image: OCULUS logo |
| ----------- | ---------------------------------- | -------------------- |
|---|
Indications for Use Statement
510(k) Number (if known): K113066
Device Name: Corvis ST
Indications for Use:
The Corvis ST is intended to measure the intra-ocular pressure of the eye in patients with less than 3 diopters of corneal astigmatism. In addition, the Corvis ST is designed to photograph the eye and take Scheimpflug images of the anterior segment of the eye to evaluate the thickness of the cornea.
Prescription Use (Part 21 CFR 801 Subpart D) AND/OR
Over-The-Counter Use (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
fice of Device Evaluation (ODE) Concurrence of CDRH,
(Division Sign-Off)
Division of Ophthalmic, Neurological and Ear,
Nose and Throat Devices
510(k) Number K113066
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