(123 days)
Not Found
No
The summary describes a physical contact lens made of specific materials with defined physical properties. There is no mention of software, algorithms, or data processing that would indicate the use of AI/ML.
No
The device is indicated for the correction of refractive ametropia (myopia and hyperopia) in aphakic and non-aphakic persons, which is a correctional rather than therapeutic use.
No
Explanation: The device is a contact lens indicated for the correction of refractive ametropia (myopia and hyperopia), which is a treatment for a condition, not a diagnostic tool for identifying a condition.
No
The device description clearly describes a physical contact lens made from specific materials, not a software program.
Based on the provided text, this device is not an IVD (In Vitro Diagnostic).
Here's why:
- Intended Use: The intended use is for the correction of refractive ametropia (nearsightedness) in aphakic and not aphakic persons with non-diseased eyes. This is a therapeutic and corrective function, not a diagnostic one.
- Device Description: The description focuses on the physical properties and materials of the contact lenses, which are designed to alter the way light enters the eye to improve vision.
- Lack of Diagnostic Function: There is no mention of the device being used to diagnose a condition, analyze a sample from the human body, or provide information about a person's health status.
IVD devices are typically used to perform tests on samples like blood, urine, or tissue to detect diseases, conditions, or infections. Contact lenses, while medical devices, fall under a different regulatory category as they are used for vision correction.
N/A
Intended Use / Indications for Use
The CONTAFLEX 54 (hioxifilcon D) Spherical Soft (hydrophilic) Contact Lenses for daily wear are indicated for the correction of refractive ametropia (myopia and hyperopia) in aphakic and not aphakic persons with non-diseased eyes. The lens may be worn by persons who exhibit refractive astigmatism of .75 diopters or less where the astigmatism does not interfere with visual acuity. The lens may be disinfected using a chemical disinfecting system.
The CONTAFLEX 49 (hioxifilcon B) Spherical Soft (hydrophilic) Contact Lenses for daily wear are indicated for the correction of refractive ametropia (myopia and hyperopia) in aphakic and not aphakic persons with non-diseased eyes. The lens may be worn by persons who exhibit refractive astigmatism of .75 diopters or less where the astigmatism does not interfere with visual acuity. The lens may be disinfected using a chemical disinfecting system.
Eyecare practitioners may prescribe the lenses for frequent/planned replacement wear, with cleaning, disinfection and scheduled replacement. When prescribed for frequent/planned replacement wear, the lens may be cleaned and disinfected using a chemical (not heat) lens care system.
Product codes
LPL
Device Description
CONTAFLEX 54 (hioxifilcon D) Device Description:
The CONTAFLEX 54 Spherical Soft (hydrophilic) Contact Lenses are fabricated from hioxifilcon D, which in the dry (unhydrated) state may be machined and polished. The hydrophilic nature of this material allows the lens to become soft and pliable when immersed in an aqueous solution.
The non-ionic lens material, (hioxifilcon D) is a co-polymer of 2-Hydroxyethylmethacrylate (2-HEMA) and 2.3- Dihydroxypropyl Methacrylate (Glycerol Methacrylate), cross-linked with ethylene glycol dimethacrylate (EGDMA), plus an initiator. The co-polymer consists of 46% hioxifilcon D and 54% water by weight when immersed in normal buffered saline solution. The lens is available in clear and with a blue visibility-handling tint, [phthalocyaninato (2-)] copper. The hioxifilcon D name has been adopted by the United States Adopted Names Council (USAN).
In the hydrated state, the lens conforms to the curvature of the eye covering the cornea and extending slightly beyond the limbus forming a colorless, transparent optical surface. The (hioxifilcon D) soft hydrophilic contact lens has a spherical back surface. The hydrophilic properties of the lens require that it be maintained in a fully hydrated state in a solution compatible with the eye. If the lens dries out, it will become hard and appear somewhat warped however, it will return to its proper configuration when completely rehydrated in the proper storage solution.
The hydrophilic characteristics allow aqueous solutions to enter the lens and in its fully hydrated state the lens is approximately 54% water by weight. The physical properties of the lens are:
Refractive Index 1.5193 (hydrated)
Light Transmission (clear) greater than 96%
Light Transmission (tinted) greater than 96%
Water Content 54 % +- 2%
Specific Gravity (wet) 1.120
Oxygen Permeability 20.96 X 10-11 (cm /sec) (ml O./ml x mm Hg @ 35 degrees C), (revised Fatt method).
CONTAFLEX 49 (hioxifilcon B) Device Description:
The CONTAFLEX 49 Spherical Soft (hydrophilic)Contact Lenses are fabricated from hioxifilcon B, which in the dry (unhydrated) state may be machined and polished. The hydrophilic nature of this material allows the lens to become soft and pliable when immersed in an aqueous solution.
The non-ionic lens material, (hioxifilcon B) is a co-polymer of 2-Hydroxyethylmethacrylate (2-HEMA) and 2,3- Dihydroxypropyl Methacrylate (Glycerol Methacrylate), cross-linked with ethylene glycol dimethacrylate (EGDMA), plus an initiator. The co-polymer consists of 51% hioxifilcon B and 49% water by weight when immersed in normal buffered saline solution. The lens is available in clear and with a blue visibility-handling tint. [phthalocvaninato (2-)] copper. The hioxifilcon B name has been adopted by the United States Adopted Names Council (USAN).
In the hydrated state, the lens conforms to the curvature of the eye covering the cornea and extending slightly beyond the limbus forming a colorless, transparent optical surface. The (hioxifilcon B) soft hydrophilic contact lens has a spherical back surface. The hydrophilic properties of the lens require that it be maintained in a fully hydrated state in a solution compatible with the eye. If the lens dries out, it will become hard and appear somewhat warped however, it will return to its proper configuration when completely rehydrated in the proper storage solution.
The hydrophilic characteristics allow aqueous solutions to enter the lens and in its fully hydrated state the lens is approximately 49% water by weight. The physical properties of the lens are:
Refractive Index 1.5164 (hydrated)
Light Transmission (clear) greater than 96%
Light Transmission (tinted) greater than 96%
Water Content 49% +- 2%
Specific Gravity (wet) 1.140
Oxygen Permeability 16.09 X 10-11 (cm /sec) (ml O./ml x mm Hg @ 35 degrees C), (revised Fatt method).
Mentions image processing
Not Found
Mentions AI, DNN, or ML
Not Found
Input Imaging Modality
Not Found
Anatomical Site
eye, cornea, limbus
Indicated Patient Age Range
Not Found
Intended User / Care Setting
Eyecare practitioners
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
Not Found
Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)
A series of preclinical testing were performed to demonstrate the safety and effectiveness of the CONTAFLEX 54 & CONTAFLEX 49 Soft (hydrophilic) Contact Lens materials. The results of all testing demonstrated that the safety and effectiveness of the CONTAFLEX 54 & CONTAFLEX 49 Soft (hydrophilic) Contact Lenses are equivalent to the currently marketed Benz hioxifilcon D (K062854) & hioxifilcon B (K964528) contact lens materials.
Toxicology:
In-Vitro Cytotoxicity: ISO 10993-5 was conducted in accordance with standards on test article. The test article meets the requirements of the Agarose Overlay Method.
Systemic Toxicity: The lens material meets the requirements of the systemic injection test and is considered non-toxic.
Acute Ocular Irritation: Acute ocular irritation test was performed and produced no ocular irritation.
Shelf Life:
The data presented supports substantial equivalence of this CONTAFLEX 54 & CONTAFLEX 49 Soft (hydrophilic) Contact Lens material to the already marketed Benz hioxifilcon D (K062854) & hioxifilcon B (K964528).
Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)
Not Found
Predicate Device(s)
Reference Device(s)
Not Found
Predetermined Change Control Plan (PCCP) - All Relevant Information
Not Found
§ 886.5925 Soft (hydrophilic) contact lens.
(a)
Identification. A soft (hydrophilic) contact lens is a device intended to be worn directly against the cornea and adjacent limbal and scleral areas of the eye to correct vision conditions or act as a therapeutic bandage. The device is made of various polymer materials the main polymer molecules of which absorb or attract a certain volume (percentage) of water.(b)
Classification. (1) Class II if the device is intended for daily wear only.(2) Class III if the device is intended for extended wear.
(c)
Date PMA or notice of completion of a PDP is required. As of May 28, 1976, an approval under section 515 of the act is required before a device described in paragraph (b)(2) of this section may be commercially distributed. See § 886.3.
0
Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized caduceus symbol, which features three human profiles facing right, connected by a flowing line. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular fashion around the symbol.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
July 10, 2015
Contamac Ltd. % Mr. Bret Andre Official Correspondent EyeReg Consulting, Inc. 474 NE 618t PL Hillsboro, Oregon 97124
Re: K150590
Trade/Device Name: Contaflex 54 (hioxifilcon D) Spherical Soft Contact Lens for Daily Wear Contaflex 49 (hioxifilcon B) Spherical Soft Contact Lens for Daily Wear Regulation Number: 21 CFR 886.5925 Regulation Name: Soft (Hydrophilic) Contact Lens Regulatory Class: Class II Product Code: LPL Dated: June 4, 2015 Received: June 8, 2015
Dear Mr. Andre:
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.
1
Please be advised that FDA's issuance of a substantial equivalence determination does 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 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 contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. Also, please note the regulation entitled, "Misbranding by reference to premarket notification"
(21 CFR 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 Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours,
Kesia Y. Alexander -A
for 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
2
Indications for Use
510(k) Number (if known) K150590
Device Name
CONTAFLEX 54 (hioxifilcon D) Spherical Soft (hydrophilic) Contact Lens for Daily Wear (clear and tinted, lathe-cut); CONTAFLEX 49 (hioxifilcon B) Spherical Soft (hydrophilic) Contact Lens for Daily Wear (clear and tinted, lathe-cut)
Indications for Use (Describe)
The CONTAFLEX 54 (hioxifilcon D) Spherical Soft (hydrophilic) Contact Lenses for daily wear are indicated for the correction of refractive ametropia (nyperopia) in aphakic and not aphakic persons with non-diseased eyes. The lens may be worn by persons who exhibit refractive astigmatism of .75 diopters or less where the astigmatism does not interfere with visual acuity. The lens may be disinfected using a chemical disinfecting system.
The CONTAFLEX 49 (hioxifilcon B) Spherical Soft (hydrophilic) Contact Lenses for daily wear are indicated for the correction of refractive ametropia (myperopia) in aphakic and not aphakic persons with non-diseased eyes. The lens may be worn by persons who exhibit refractive astigmatism of .75 diopters or less where the astigmatism does not interfere with visual acuity. The lens may be disinfected using a chemical disinfecting system.
Eyecare practitioners may prescribe the lenses for frequent/planned replacement wear, with cleaning, disinfection and scheduled replacement. When prescribed for frequent wear, the lens may be cleaned and disinfected using a chemical (not heat) lens care system.
Type of Use (Select one or both, as applicable)
| Prescription Use (Part 21 CFR 801 Subpart D) | |
|---|---|
| Over-The-Counter Use (21 CFR 801 Subpart C) |
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3
510 (k) SUMMARY OF SAFETY AND EFFECTIVENESS
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990 and 21 CFR 807.92.
| The assigned 510(k) number is: | K150590 | |
|---|---|---|
| Applicant information: | ||
| Date Prepared: | March 3rd, 2015 | |
| Name: | ||
| Address | CONTAMAC Ltd. | |
| Bearwalden Business Park | ||
| Saffron Walden | ||
| Essex England CB11 4JX | ||
| Contact Person: | ||
| Phone number: | Robert McGregor | |
| 44-1799 542 000 | ||
| US Agent: | ||
| Phone number | ||
| Fax number | EyeReg Consulting, Inc. | |
| Bret Andre | ||
| (503) 372-5226 | ||
| (503) 419-4475 |
Device Information:
| Device Classification: | Class II |
|---|---|
| Classification Number: | LPL |
| Classification Name: | Soft (hydrophilic) Contact Lens (21 CFR 886.5925) |
| Trade Name: | CONTAFLEX 54 (hioxifilcon D) Spherical Soft |
| (hydrophilic) Contact Lens for Daily Wear (clear | |
| and tinted, lathe-cut) | |
| CONTAFLEX 49 (hioxifilcon B) Spherical Soft | |
| (hydrophilic) Contact Lens for Daily Wear (clear | |
| and tinted, lathe-cut) |
4
Equivalent Devices:
The CONTAFLEX 54 (hioxifilcon D) & CONTAFLEX 49 (hioxifilcon B) Spherical Soft (hydrophilic)Contact Lenses are substantially equivalent to the following predicate device(s):
| Predicate device: | "BENZ-G 4X hioxifilcon D"
Manufactured/distributed by Benz Research and Development.
510(k) number; K062854 |
|-------------------|-------------------------------------------------------------------------------------------------------------------|
| | "BENZ-G 3X hioxifilcon B"
Manufactured/distributed by Benz Research and Development.
510(k) number; K964528 |
CONTAFLEX 54 (hioxifilcon D) Device Description:
The CONTAFLEX 54 Spherical Soft (hydrophilic) Contact Lenses are fabricated from hioxifilcon D, which in the dry (unhydrated) state may be machined and polished. The hydrophilic nature of this material allows the lens to become soft and pliable when immersed in an aqueous solution.
The non-ionic lens material, (hioxifilcon D) is a co-polymer of 2-Hydroxyethylmethacrylate (2-HEMA) and 2.3- Dihydroxypropyl Methacrylate (Glycerol Methacrylate), cross-linked with ethylene glycol dimethacrylate (EGDMA), plus an initiator. The co-polymer consists of 46% hioxifilcon D and 54% water by weight when immersed in normal buffered saline solution. The lens is available in clear and with a blue visibility-handling tint, [phthalocyaninato (2-)] copper. The hioxifilcon D name has been adopted by the United States Adopted Names Council (USAN).
In the hydrated state, the lens conforms to the curvature of the eye covering the cornea and extending slightly beyond the limbus forming a colorless, transparent optical surface. The (hioxifilcon D) soft hydrophilic contact lens has a spherical back surface. The hydrophilic properties of the lens require that it be maintained in a fully hydrated state in a solution compatible with the eye. If the lens dries out, it will become hard and appear somewhat warped however, it will return to its proper configuration when completely rehydrated in the proper storage solution.
The hydrophilic characteristics allow aqueous solutions to enter the lens and in its fully hydrated state the lens is approximately 54% water by weight. The physical properties of the lens are:
Refractive Index Light Transmission (clear) Light Transmission (tinted) Water Content Specific Gravity (wet) Oxygen Permeability
1.5193 (hydrated)
greater than 96%
greater than 96%
54 % ± 2%
1.120
20.96 X 10-11 (cm /sec) (ml O./ml x mm Hg @ 35℃),
(revised Fatt method).
5
CONTAFLEX 49 (hioxifilcon B) Device Description:
The CONTAFLEX 49 Spherical Soft (hydrophilic)Contact Lenses are fabricated from hioxifilcon B, which in the dry (unhydrated) state may be machined and polished. The hydrophilic nature of this material allows the lens to become soft and pliable when immersed in an aqueous solution.
The non-ionic lens material, (hioxifilcon B) is a co-polymer of 2-Hydroxyethylmethacrylate (2-HEMA) and 2,3- Dihydroxypropyl Methacrylate (Glycerol Methacrylate), cross-linked with ethylene glycol dimethacrylate (EGDMA), plus an initiator. The co-polymer consists of 51% hioxifilcon B and 49% water by weight when immersed in normal buffered saline solution. The lens is available in clear and with a blue visibility-handling tint. [phthalocvaninato (2-)] copper. The hioxifilcon B name has been adopted by the United States Adopted Names Council (USAN).
In the hydrated state, the lens conforms to the curvature of the eye covering the cornea and extending slightly beyond the limbus forming a colorless, transparent optical surface. The (hioxifilcon B) soft hydrophilic contact lens has a spherical back surface. The hydrophilic properties of the lens require that it be maintained in a fully hydrated state in a solution compatible with the eye. If the lens dries out, it will become hard and appear somewhat warped however, it will return to its proper configuration when completely rehydrated in the proper storage solution.
The hydrophilic characteristics allow aqueous solutions to enter the lens and in its fully hydrated state the lens is approximately 49% water by weight. The physical properties of the lens are:
Refractive Index Light Transmission (clear) Light Transmission (tinted) Water Content Specific Gravity (wet) Oxygen Permeability
1.5164 (hydrated) greater than 96% greater than 96% 49% ± 2% 1.140 16.09 X 10-11 (cm /sec) (ml O./ml x mm Hg @ 35℃), (revised Fatt method).
6
Intended Use:
The CONTAFLEX 54 (hioxifilcon D) Spherical Soft (hydrophilic) Contact Lenses for daily wear are indicated for the correction of refractive ametropia (myopia and hyperopia) in aphakic and not aphakic persons with non-diseased eyes. The lens may be worn by persons who exhibit refractive astigmatism of .75 diopters or less where the astigmatism does not interfere with visual acuity. The lens may be disinfected using a chemical disinfecting system.
The CONTAFLEX 49 (hioxifilcon B) Spherical Soft (hydrophilic) Contact Lenses for daily wear are indicated for the correction of refractive ametropia (myopia and hyperopia) in aphakic and not aphakic persons with non-diseased eyes. The lens may be worn by persons who exhibit refractive astigmatism of .75 diopters or less where the astigmatism does not interfere with visual acuity. The lens may be disinfected using a chemical disinfecting system.
Eyecare practitioners may prescribe the lenses for frequent/planned replacement wear, with cleaning, disinfection and scheduled replacement. When prescribed for frequent/planned replacement wear, the lens may be cleaned and disinfected using a chemical (not heat) lens care system.
Description of Safety:
A series of preclinical testing were performed to demonstrate the safety and effectiveness of the CONTAFLEX 54 & CONTAFLEX 49 Soft (hydrophilic) Contact Lens materials. The results of all testing demonstrated that the safety and effectiveness of the CONTAFLEX 54 & CONTAFLEX 49 Soft (hydrophilic) Contact Lenses are equivalent to the currently marketed Benz hioxifilcon D (K062854) & hioxifilcon B (K964528) contact lens materials. A summary of these results from the preclinical studies is presented below.
Toxicology:
In-Vitro Cytotoxicity: ISO 10993-5 was conducted in accordance with standards on test article. The test article meets the requirements of the Agarose Overlay Method.
Systemic Toxicity: The lens material meets the requirements of the systemic injection test and is considered non-toxic.
Acute Ocular Irritation: Acute ocular irritation test was performed and produced no ocular irritation.
Shelf Life
The data presented supports substantial equivalence of this CONTAFLEX 54 & CONTAFLEX 49 Soft (hydrophilic) Contact Lens material to the already marketed Benz hioxifilcon D (K062854) & hioxifilcon B (K964528).
7
Substantial Equivalence:
The CONTAFLEX 54 & CONTAFLEX 49 Soft (hydrophilic) Contact Lenses are substantially equivalent to the predicate device as depicted in the following table, and do not raise different questions of safety and effectiveness than the predicate device identified previously.
The following table depicts the pre-clinical characteristics of the CONTAFLEX 54 & CONTAFLEX 49 materials, as well as the predicate devices.
8
Substantial Equivalence Matrix
| | Contamac ltd.
CONTAFLEX 54
(Subject Device) | Contamac ltd.
CONTAFLEX 49
(Subject Device) | Benz Research and
Development
BENZ-G 4X
(Predicate Device) | Benz Research and
Development
BENZ-G 3X
(Predicate Device) |
|------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Intended Use | Indicated for daily wear
for the correction of
visual acuity in aphakic
and not aphakic persons
with non-diseased eyes
with myopia or
hyperopia. | Indicated for daily
wear for the correction
of visual acuity in
aphakic and not
aphakic persons with
non-diseased eyes with
myopia or hyperopia. | Indicated for daily
wear for the
correction of visual
acuity in aphakic
and not aphakic
persons with non-
diseased eyes with
myopia or
hyperopia. | Indicated for daily
wear for the
correction of visual
acuity in aphakic
and not aphakic
persons with non-
diseased eyes with
myopia or
hyperopia. |
| Functionality | After machining from
the optical blank, the
contact lenses act as a
refractive medium that
focus light rays from
near and distant objects
on the retina. | After machining from
the optical blank, the
contact lenses act as a
refractive medium that
focus light rays from
near and distant
objects on the retina. | After machining
from the optical
blank, the contact
lenses act as a
refractive medium
that focus light rays
from near and
distant objects on
the retina. | After machining
from the optical
blank, the contact
lenses act as a
refractive medium
that focus light rays
from near and
distant objects on
the retina. |
| Indications | Soft (hydrophilic)
Contact Lens (21 CFR
886.5925) | Soft (hydrophilic)
Contact Lens (21 CFR
886.5925) | Soft (hydrophilic)
Contact Lens (21 CFR
886.5925) | Soft (hydrophilic)
Contact Lens (21 CFR
886.5925) |
| Production Method | Lathe cut | Lathe cut | Lathe cut | Lathe cut |
| USAN name | hioxifilcon D | hioxifilcon B | hioxifilcon D | hioxifilcon B |
| Water Content (%) | 54±2% | 49±2% | 54±2% | 49±2% |
| Oxygen
Permeability | $20.96 x 10^{-11} (cm^2/sec)(mlO_2)/(ml x mmHg @ 35°C)) (revised Fatt method)$ | $16.09 x 10^{-11} (cm^2/sec)(mlO_2)/(ml x mmHg @ 35°C)) (revised Fatt method)$ | $20.09 x 10^{-11} (cm^2/sec)(mlO_2)/(ml x mmHg @ 35°C)) (revised Fatt method)$ | $15.71 x 10^{-11} (cm^2/sec)(mlO_2)/(ml x mmHg @ 35°C)) (revised Fatt method)$ |
| FDA Group | FDA Group 2
(>50% H2O, non-ionic
polymer) | FDA Group 1
(50% H2O, non-
ionic polymer) | FDA Group 1
(