DR. KARICKHOFF’S UNIQUE CAREER IN INNOVATION
HIS CURRICULUM VITAE:
Dr. Karickhoff’s unique career goal has been to produce through clinical research an innovation or significant contribution related to each of the 14 main anatomical structures of the eyeball. The most difficult task was producing an innovation or contribution related to the zonules, the sclera, and the vitreous. Traditionally almost no research, published papers, or innovations are related to these structures. His most recent work on vitreous floaters has completed his unique 30 year goal.
Each innovation and significant contribution is listed below with letters and numbers to the right indicating where its complete description can be found in his Curriculum Vitae which is located at the bottom of this web page. For example:
I#2 -indicates Invention #2
MD#4 -indicates M edical Device #4
SI#5 -indicates S urgical Instrument #5
OC#6 -indicates Ophthalmology Concept #6
RP#7 -indicates Refereed Publication #7.
NRP#8- indicates Non-Refereed Publication #8.
(All devices, instruments, and concepts were given to the medical profession by Dr. Karickhoff with the exceptions of the Karickhoff Keratoscope (U.S. Patent) and the Karickhoff Mosaic Matcher. Only his instruments and medical devices sold internationally were listed here as an innovation or contribution.)
Dr. Karickhoff’s innovations (in blue)
Dr. Karickhoff’s significant contributions (in green}
for each of the 14 major eye structures.
New treatment for oil gland deficiency (OC#11)
New Schirmer test for dry eyes (OC#10)
Mosaic Matcher for counting endothelial cells (MD#2)
Two direction incision for radial keratotomy (OC#5)
Karickhoff Keratoscope (U.S.Patent) (I#1)
Corneal oil layer tester (NRP#20)
Klein keratoscope modification (NRP#12)
3. Anterior Chamber Angle:
Anterior Chamber Caliper (U.S. Patent) (I#2)
4. Trabecular meshwork:
Simplified tonography (NRP#18)
5. Lens (cataract):
Study of Elimination of Glasses after Cataract Surgery (OC#4)
Study of Superiority of Flexible Intraocular Implants (RP#6)
Karickhoff Cataract Mirror (MD#4)
Plus axis incision for cataract surgery (OC#3)
Snowplow capsulotomy tool (NRP#22)
Karickhoff Irrigation and Aspiration Double Cannula (SI#1)
Karickhoff Irrigation and Aspiration Double Cannula for Phaco (SI#2)
Karickhoff Implant Positioner, Angle Assessor, and Implant Ruler (SI#3a,b,c)
Modification of the Tennant Ball (SI#4)
Demonstration of the cataract to the patient (OC#2)
Brightness Acuity Tester modification (MD#5)
Concept of reverse pupillary block (OC#6)
Concept of using transillumination to perform iridotomy (OC#8)
Treatment of pigmentary glaucoma with iridotomy (OC#7)
8. Ciliary body:
Simplified tonography (OC#9)
Karickhoff Laser Lens for pan retinal photocoagulation (MD#1)
Karickhoff Flying Corpuscle Viewer (MD#3)
11. Optic nerve:
Karickhoff Flying Corpuscle Viewer (MD#3)
Translucent occluder in visual field testing (NRP#13)
Visual field study in 600 cases of malignant melanoma (RP#1)
Schiotz Shoove test (based on scleral rigidity) (OC#1)
Surgical contact lens for laser in posterior vitreous (MD#7)
Surgical contact lens for treating off-axis floaters (MD#6)
Principle investigator of U.S. F.D.A. study of “Laser Treatment of Vitreous Floaters” (published in book below)
Wrote the application to the United States Food and Drug Administration which
resulted in their approval of
YAG lasers for this procedure.
Book written and published on Laser Treatment of Eye Floaters
||Anterior Chamber Caliper
|Concept of reverse
|Iridotomy to treat
|Karickhoff Laser Lens
for visual fields
|Surgical contact lenses
for floater treatment
|F.D.A. application and
approval for floater treatment
|Book, Laser Treatment
of Eye Floaters
DR. CURRICULUM VITAE
John R. Karickhoff, M.D.
313 Park Avenue
Falls Church, Virginia 22046
TABLE OF CONTENTS:
Teaching and Speaking
Inventions with United States Patents (2)
Original medical devices sold nationally (7)
Original surgical instruments (6)
Original ophthalmology concepts (11)
National advertisements authored (3)
Clinical firsts (12)
Television tapes (5)
Honors and Awards (6)
Refereed publications (19)
Non-refereed publications (22)
Patent application papers (2)
Spencer, West Virginia. May 4, 1938
Spencer Elementary School, Spencer, West Virginia. 1944-1952
Spencer High School, Spencer, West Virginia. 1952-1956
Marshall University, 1956-1960, A. B. Degree, Magna Cum Laude
Major of Zoology, Huntington, West Virginia.
Top pre-medical student.
Highest grade average of any student studying a science.
(Approximately 1,750 students in my graduating class.)
President of the Student Body (senior year)
President of the Junior Class
President of the Sophomore Class
President of the Freshman Class
President of the Student Christian Association
Varsity Debating Team
Chairman of Campus Chapel Building Fund
The "Outstanding Physics Student" Award
Who's Who Among Students In American Universities and Colleges
Sigma Alpha Epsilon social fraternity
Duke University, 1960-1964, M. D. Degree
Durham, North Carolina
Top one-fifth of class academically
Duke University, 1964-1965, Internship in Internal Medicine
Duke University, 1965-1968, Residency in Ophthalmology
Chief Resident, 1967-1968
Diplomate, American Board of Ophthalmology, October 21, 1970
Diplomate, National Board of Medical Examiners, #77822, July 1, 1965
Rank of Major in the United States Army Medical Corps:
Basic training, Fort Sam Houston, San Antonio, Texas, 1968
93rd Evacuation Hospital, DaNang, Viet Nam, 1968-1969
My primary mission was to perform emergency eye surgery
on battlefield wounds. In my spare time I started a large
cataract clinic in which I donated my services and
performed 500 eye operations on Vietnamese civilians. I
arranged for glasses to be purchased for the patients by
Rotary Clubs in West Virginia. I also organized the
other doctors into medical teams that went weekly to
nearby hamlets. The Army awarded me the Bronze Star and
the Rotary Clubs of Virginia gave me the "Best Example
of Service Above Self" Award for that work.
Chief of Ophthalmology, Fort Belvoir, Virginia 1969-1970
Army Commendation Award for service there.
Commonwealth of Virginia, #20384, June 8, 1970 to present
District of Columbia, MD 25538, April 1, 1997 to present
State of North Carolina, #14229, June 18, 1964 to present
Fellow, American Academy of Ophthalmology, #000844
Member, American Intraocular Implant Society
Member, Kerato-refractive Society
Associate Member, Fairfax County Medical Society
Member, American Society of Contemporary Ophthalmology
Member, Medical Advisory Board of the Fairfax Surgical Center,
Fairfax, Virginia, 1980 to 2000.
Member, Duke University Eye Center Alumni Executive Council,
Durham, North Carolina, 1994 to 1997.
Member, Duke University Eye Center Advisor Board, Durham, North
Carolina, 1998 to present.
Member, National Press Club, Washington, D.C. Classification
of "Expert news source for ophthalmology", 1997 to present.
Fairfax Hospital. 3300 Gallows Road, Falls Church, VA 22042
Active staff, 1969 to present.
Fairfax Surgical Center. 10730 Main Street, Fairfax. VA 22030
Active staff, 1982 to present.
Medical Advisory Board for Ophthalmology, 1987 to present.
At the Department of Ophthalmology, Georgetown University, Washington, D.C.:
Clinical Instructor 1969-1979.
Clinical Assistant Professor 1979-1992.
Clinical Associate Professor 1992-present.
Activities at Georgetown included serving as the Attending
Physician to the Resident's Outpatient Clinic every Tuesday
afternoon from 1969-1976. Reorganized, obtained equipment, and
headed the Low Vision Clinic, 1973-1976. Attended the Residents
in the operating room for cataract surgery for seven years.
Held Journal Club. Gave numerous lectures to medical students,
Grand Rounds, nurses, and interest groups.
Numerous jobs prior to medical school including a paper route for
9 years, working for the State Road Commission, and performing
quantitative analysis in a chemical plant.
Was the only student in Duke Medical School to work all four
Private practice of ophthalmology (group practice) at the Falls
Church Medical Center, in Falls Church, Virginia, 1970 until
Private practice of ophthalmology (solo practice) in Falls Church
from 1976 until present.
TEACHING AND SPEAKING:
Teaching ophthalmology at Georgetown University, Washington, D.C.
(see University Affiliation above)
Teaching cataract surgical techniques course at the annual
Academy of Ophthalmology meeting, 1985-1989
Lectures for Surgidev Corporation at the American Academy of
Ophthalmology, 1987, 1988, 1989.
Numerous lectures to medical students, nurses and interest
INVENTIONS WITH UNITED STATES PATENTS
I#1- Karickhoff Keratoscope TM - U. S. Patent #4,491,398 awarded Jan.
1, 1985. This device is used by hundreds of eye surgeons nation-
wide to assess the degree of corneal astigmatism and monitor
corrective measures to reduce astigmatism during surgery. The
device is used in cataract-implant, corneal transplant, radial
keratotomy, and other corneal surgery. Manufactured by
I#2 -Karickhoff Anterior Chamber Caliper - U. S. Patent #4,319,564
awarded 1982. This device is the only instrument that gives an
exact measurement of the anterior chamber diameter where an
anterior chamber implant fits. The device is now obsolete due to
the introduction of posterior chamber implants where one size
fits all eyes and flexible anterior chamber implants. Manufactured
by Storz Instruments.
ORIGINAL MEDICAL DEVICES SOLD NATIONALLY:
MD#1- Karickhoff Laser Lens TM - This device is a four mirrored
gonioscope that directs and connects a laser beam to the eye. It
is unique in that the tilt of each mirror and its "depth dots"
prevents surgeons from making laser burns into the undesired
areas of the eye. This lens has become the top seller in the
world for laser surgery in the back of the eye, selling over
a million dollars worth of lenses. I receive no compensation
from sales. This design and my working through six
prototypes was a gift of mine to the profession. Manufactured
by Ocular Instruments Inc.
MD#2- Karickhoff Mosaic Matcher TM - This device allows the surgeon to
estimate the number of corneal endothelial cells prior to
surgery. These cells pump fluid out of the cornea and determine
whether it will stay clear after surgery. This device is
distributed free to all ophthalmologist and is the most widely
used such device in the world, being owned by 7,000
ophthalmologists. The device allows the cell number estimate
to be performed in 15 seconds at no charge to the patient and
with no equipment for the ophthalmologist to buy. Previous
devices required a $9,000 camera, regular purchase of film,
required five days to obtain an answer, and a charge of $150
was usually made to the patient. (See refereed publication 3
below) Manufactured by Surgidev Corporation.
MD#3- Karickhoff Flying Corpuscle Viewer TM - This device is an
inexpensive and valuable method for determining macular function
prior to cataract extraction, corneal transplantation or
vitrectomy. The device is a blue field entoptic tester, but
it is unique in that it uses the slit-lamp present in every
ophthalmologist's office as its source of light. This greatly
reduces the expense of the test and makes it more handy for the
doctor. (see referred publication 5 and non-refereed 14)
Manufactured by Surgidev Corporation.
MD#4- Karickhoff Cataract Mirror - When patients have had a cataract
removed but have no implant inserted, they can not see their own
eye to apply make-up or to insert a contact lens. This high
powered mirror allowed them to do those things. There is now
little use for this mirror as 99 percent of patients now receive
MD#5- Brightness Acuity Tester modification - My modification of this
popular device allows the doctors to hang loose lenses onto
the device so that the patient's best corrected vision would
be tested, rather than using only the patient's glasses for
testing. Upon seeing my publication (see non-refereed
publication 11) the manufacturers of the B.A.T., Mentor, Inc.,
began making and selling my modification as a standard
accessory to their device.
MD#6- Karickhoff Off-Axis Floater Lens. This surgical contact lens
allows for better viewing and aiming on opacities not in the
central visual axis. This lens contains a prism the base of which
is identified with an internal black dot for easy orientation. By
simply rotating the lens, the area around the opacity can be checked
for small particles needing treatment. Manufactured by Ocular
MD#7- Karickhoff 21 mm. Floater Lens. This surgical contact lens
allows for treatment of opacities in the posterior one half of the
vitreous. Previous contacts either would not focus the laser deep
enough for effective floater disruption there, or they focused it
too deep, making hitting the retina with the laser beam a problem.
ORIGINAL SURGICAL INSTRUMENTS:
SI#1- Karickhoff Irrigation and Aspiration Double Cannula - This device
is used to remove cortical material during extracapsular cataract
extraction. There are similar devices now, but this device is
preferred by hundreds of eye surgeons because of the gradual 45
degree curve of the body, and the "depth dots" revealing the location
of the tip when the tip is hidden. Made by Karl Ilg Instruments.
SI#2- Karickhoff Irrigation and Aspiration Double Cannulas for Phaco-
emulsification - These devices, the tip of one going to the right
and the other to the left, are similar to the above I. and A.'s
but have an enlarged eliptical width and height that exactly
fills the 3 mm. phaco incision. This prevents any leakage at the
wound, creating a deep anterior chamber during I. and A. Made
by Karl Ilg Instruments.
SI#3- Karickhoff Implant Positioner, Angle Assessor, and Implant Ruler-
These 3 surgical instruments were used to manipulate anterior
chamber implants. They were widely used but are now obsolete due
to the advent of flexible anterior chamber implants. (see
refereed publications 2, 4, 8, and non-referred publications
3 and 7 below) Made by Storz Instruments.
SI#4- Modification of the Tennant Ball - A cyclodialysis spatula was added
to the other end of the instrument so when the Tennant Ball is
removed after quartering the nucleus, the spatula is handy to
place in the anterior chamber to aid in the removal of the
quarters. A second modification was to increase the shaft of
the Tennant Ball so that the shaft completely fills the tiny
incision necessary for the entrance of the ball. Made by
Karl Ilg Instruments.
ORIGINAL OPHTHALMOLOGY CONCEPTS:
OC#1- Schiotz-shoove test - This test is performed before radial kera-
totomy to learn if the eye will sink during surgery resulting in
undesirable shallow incisions. This test, based on scleral rigidity, tells
the physician which patients need a retrobulbar injection to prevent the
sinking. Using the Schiotz-shoove test greatly reduces the
number of retrobulbar injections needed. (see non-refereed
publication number 8).
OC#2- Demonstrating the cataract to the patient - I devised a way using
optical equipment in every ophthalmologist's office to allow the
patient to see their own cataract. The patient can draw their
own cataract and follow their cataract's development. (see
refereed publication number 10).
OC#3- Using a plus meridian incision in cataract surgery - I believe I
was the first to place this astigmatism reducing concept in certainly the
modern literature for both primary (see refereed publication number 15)
and secondary (see refereed publication number 28) cataract surgery. In
my opinion this is the most reliable and simplest way to reduce astigmatism.
OC#4- Elimination of distance glasses in implant patients - Other
authors had written about (a) reducing astigmatism to reduce
the strength in glasses and (b) performing ultrasound to
reduce the strength in glasses. I believe, however, I was the
first to discuss combining astigmatism reduction and
ultrasound to actually get rid of distance glasses and
discussed the percentage of glasses eliminated (see
refereed publication number 7 and non-refereed publication number 6).
OC#5- Two direction radial keratotomy incision technique - The American
system is to use outward directed incisions. The Russian system
uses inward directed incisions. I believe I was the first to cut
both directions on all routine cases. The advantage is greater
safety and more accurate placement and depth. Nine months after
publishing my two direction incision method, a special blade
was designed elsewhere for my method. This blade allows the
surgeon to use one blade to cut both directions with little
danger of entering the optical zone. My two direction method
using the special blade is presently being taught in most of the
courses for doctor training in the United States. (see non-ref.
publication number 15).
OC#6- The original concept that reverse pupillary block is a principle
mechanism causing classic pigmentary glaucoma. (see ref.
publication number 17 and non-ref. publication 16).
OC#7- The first published paper proposing and using laser iridotomy as
a treatment for pigmentary glaucoma. (see ref. publication
number 17 and non-ref. publication 16).
OC#8- The original concept and first use in the world of transillumination
location of laser iridotomy in treating pigmentary glaucoma.
(see ref. publication number 17 and non-ref. publication 16).
(The last three concepts above are now viewed as a unique and significant
advance in the understanding and treatment of pigmentary glaucoma.)
OC#9- The original concept of using a voice recorder to record the opening
pressure for tonography. The previous concept was to use a galvanometer
to mechanically record the pressure. The galvanometer is subject to many
errors and is so cumbersome that tonography was basically abandoned. Voice
recording is much simpler and much more accurate. (see non-ref. publication 18).
OC#10- The original concept of using the "wrong" end of the Schirmer paper
strip to adsorb any excess tears from anesthetic drops before
turning the paper around and performing the Schirmer with
anesthesia test. This new maneuver allows the Schirmer test to
be done immediately after anesthetic drops are used, increases
the accuracy by removing any excess tears, and cuts the test
time by half. (see non-ref. publication 19).
OC#11- The original concept of treating meibomian gland deficiency by
placing ointment on the outside of the lower eyelid. In this disease
there is an absence of oil in the tear film. Replacement with oily eye
drops blurs the vision and lasts only a short time. Ointment
placed on the lower eye lid below the eye works its way up to
the eye and provides a non-blurry oil film over the eye for at
least eight hours. The treatment prevents excess reflex tearing
and prevents tears from flipping onto the back of the glasses.
(Non-referreed publication 21)
NATIONAL ADVERTISEMENTS AUTHORED:
Karickhoff Laser Lens
Karickhoff Mosaic Matcher
Karickhoff Irrigation and Aspiration Double Cannula
First to use all of the inventions, original designs, and
original concepts above.
First in Virginia to perform surgery for radial keratotomy.
April 15, 1981.
First in Northern Virginia to perform epikeratophakia ("the
living contact lens") operation. December 10, 1985.
First in Northern Virginia to perform outpatient cataract
surgery. January 14, 1981.
First in Northern Virginia to perform the secondary implant
operation (placing the implant in the eye months or years
after the original cataract surgery). April 28, 1978.
First at Fairfax Hospital to perform the anterior chamber intraocular
lens operation. March 11, 1977.
First in Northern Virginia to treat chronic glaucoma with
laser surgery. June 11, 1981.
First in Northern Virginia to treat acute glaucoma with laser
surgery. March 2, 1977.
First to stress the importance of using flexible implants - I
believe I was the first to publish a paper physically
analyzing the flexibility of implants and stressing the
importance of this. (see refereed publication number 6)
First in Northern Virginia to use the drug Mitomycin in
conjunction with pterygium removal, September 30, 1988.
First in the Washington area to perform no-stitch cataract-
implant surgery, February 5, 1991.
First in the world to perform iridotomy using transillumination
location of the iridotomy, September 5, 1991.
First in 10 state area to regularly perform laser disruption of
vitreous opacities. February 1, 1990
(I performed the surgery, wrote the script, narrated, supplied
the music, and supervised the editing and production of each
Karickhoff, J.R.: "Instruments and Techniques for Anterior
Chamber Implants". Shown at the American Academy of
Ophthalmology, 1979, 1980
Karickhoff, J.R.: "Manual Extracapsular Cataract Extraction with
Astigmatism Control". Shown at the American Academy of
Ophthalmology, 1984, 1985, 1986
Karickhoff, J.R.: "Astigmatism Reduction in Cataract Surgery".
Shown on national Medical Education Television, 1983.
Karickhoff, J.R.: "Cataracts, Cataract Surgery, and Intraocular
Implants". For office viewing by patients. 1980
Karickhoff, J.R.: "Care after cataract surgery". Placed on
national sales. 1980
HONORS AND AWARDS:
Bronze Star, U. S. Army, Vietnam, 1968
Army Commendation, U. S. Army, Fort Belvoir, Virginia 1969
"Best Example of Service Above Self" Award, Rotary Clubs of
"The Professional Service Award" given by the Washington, D.C.
Metropolitan Area Prevention of Blindness Society, 1975
Marshall University Alumni Association's, "The Distinguished
Alumnus Award", 1989
Georgetown University's Vicennial Award; for twenty years of
unpaid teaching of ophthalmology, 1990
First invited lecturer to the Duke University Eye Center Albert Eye
Research Institute, October 29, 2006
“America’s Top Ophthalmologists” Award, 2007
Chairman of Chapel Campus Building Fund - raised $32,000 to start
construction of an interdenominational campus chapel, 1958
Started a large cataract clinic in Vietnam and did all the surgery
without charge to Vietnam civilians, 1968-1969
Member of Falls Church Rotary Club. Participated each year in
numerous projects to raise money for local charities,
Active in the St. Matthews United Methodist Church then the Good
Shepherd Epsicopal Church, 1972-1985.
Leads a band that gives free concerts in retirement homes and
plays for charity money raising events, 1997-present.
1. Karickhoff, J.R.: "Loss of visual function and visual cells in
600 cases of malignant melanoma". American Journal of
Ophthalmology. 64:268-273, 1967
2. Karickhoff, J.R.: "Director for the Choyce implant". American
Journal of Ophthalmology. 87:569-570, 1979
3. Karickhoff, J.R.: "Corneal endothelial cell estimates at your
slip lamp in 15 seconds". Ophthalmology. Vol 87 #85, pg. 132,
4. Karickhoff, J.R.: "Instruments and techniques for anterior
chamber implants". Archives of Ophthalmology. 98:1265-1267, 1980
5. Karickhoff, J.R.: "Flying corpuscle macular test performed with
the slit lamp." Ophthalmology. Vol. 88, #95, pg. 91, 1981
6. Karickhoff, J.R.: "Flexibility and weight of anterior chamber
implants." Contact and Intraocular Lens Medical Journal. 7:348-
7. Karickhoff, J.R.: "Elimination of distance glasses in implant
patients." Contact and Intraocular Lens Medical Journal.
8. Karickhoff, J.R.: "Techniques for sizing anterior chamber
implants". Amer. Intra-ocular Implant Society Journal. Spring
1983, pg. 206-208
9. Karickhoff, J.R.: "Wound closure technique in cataract surgery".
Amer. Intra-ocular Implant Society Journal. Spring 1983, pg. 213
10. Karickhoff, J.R.: "Demonstrating the cataract to the patient".
Amer. Intra-ocular Implant Society Journal. Winter issue, pg.
11. Karickhoff, J.R.: "Twelve steps to prevent macular edema". Amer.
Intra-ocular Implant Society Journal. March 1985, pg. 191-192
12. Karikhoff, J.R.: "Office suture cutting". Amer. Intraocular
Implant Society Journal. Nov. 1985, pg. 609-610
13. Karickhoff, J.R.: "Techniques with high vitreous pressure".
Journal of Cataract and Refractive Surgery. July 1986, pg. 427,
14. Karickhoff, J.R.: "Cataract extraction technique in highly
myopic eyes". Journal of Cataract and Refractive Surgery. Sept.
1986, pg. 551
15. Karickhoff, J.R.: "Plus meridian incision for secondary
implantation". Ophthalmic Surgery. Sept. 1987, Vol 18, pg. 658-
16. Karickhoff, J.R.: "Adding automated perimetry to glaucoma
evaluation and treatment". Annals of Ophthalmology. December
1991, Vol 23, pg. 470-473
17. Karickhoff, J.R.: "Pigmentary dispersion syndrome and
pigmentary glaucoma: a new mechanism concept, a new treatment
and a new technique." Ophthalmic Surgery. April 1992, Vol 23,
18. Karickhoff, J.R.: Letter to Editor: "Iridotomy in eyes with
pigmentary glaucoma." Ophthalmic Surgery. December 1992,
Vol 23, pg. 844-845.
19. Karickhoff, J.R.: Letter to Editor: "Reverse pupillary
block in pigmentary glaucoma: follow-up and new developments."
Ophthalmic Surgery. August 1993, Vol.24, pg.562-563.
1. Karickhoff, J.R.: "In my hands." Ophthalmology Times. 6:61-64,
2. Karickhoff, J.R.: "Use of the Laser Lens", Opththalmology Times.
Vol. 7 No.13, pg. 28, 1982
3. Karickhoff, J.R.: "Instrument Developed for Sizing Anterior
Chamber Implants", Ophthalmology Times. Vol. 8, No. 19, pg.
4. Karickhoff, J.R.: "Flying corpuscle test in cataract patients".
Cataract Surgery Now. Summer issue, 1983
5. Karickhoff, J.R.: "Reduction of astigmatism in implant
patients". Cataract Surgery Now. Summer issue, 1983
6. Karickhoff, J.R.: "Eliminating glasses for distance after IOL",
IOL and Ocular Surgery News, Vol. 2. Number 2, pg. 26,27, 1984
7. Karickhoff, J.R.: "Sizing implants and testing macular function".
IOL and Ocular Surgery News. Vol. 2. No.12, pg. 26,49, 1984
8. Karickhoff, J.R.: "Predicting the 'Sinking Syndrome' before RK",
Ocular Surgery News, Jan. 1, 1984, pg. 16
9. Karickhoff, J.R.: "Use of the Karickhoff Keratoscope in radial
keratotomy", Ocular Surgery News, April 15, 1985, pg. 64,65
10. Karickhoff, J.R.: "Non-standard radial keratotomy", Ocular
Surgery News, May 1, 1986, pg. 45-49
11. Karickhoff, J.R.: "Brightness acuity tester modification".
Ocular Surgery News. pg. 28,29, May 1, 1987
12. Karickhoff, J.R.: "Modification of the Klein Keratoscope".
Ocular Surgery News, Vol. 7, Number 16, pg. 26, 1989
13. Karickhoff, J.R.: "Translucent occluder improves visual
field testing follow-up". Ocular Surgery News, Oct. 15, 1990,
14. Karickhoff, J.R.: "Safer manual I/A possible for phaco cases".
Ophthalmology Times, May 15, 1991, pg. 27.
15. Karickhoff, J.R.: "Combination inward/outward cuts for radial
keratotomy". Ocular Surgery News, July 1, 1991, pg. 49-50.
16. Karickhoff, J.R.: "Pigmentary glaucoma: Theory on a new
mechanism and results of a new treatment.: Ocular Surgery News,
Sept. 1, 1992, pg. 42-46.
17. Karickhoff, J.R.: "Iridotomie beim pigmentglaukom: einjahrige
nachuntersuchung und neue entwicklungen". Search on Glaucoma,
Band 2, Nummer 2, 1994, pg. 42-44.
18. Karickhoff, J.R.: "Simplified Outflow Facility Testing is
Quick, Practical", Ocular Surgery News, Sept. 15, 1997, pg. 35-38.
19. Karickhoff, J.R.: "An easy way to cut dry-eye test time in
half", Review of Ophthalmology, April 1998, pg. 34.
20. Karickhoff, J.R.: "Dry-eye diagnosis made easier", Review of
Ophthalmology, July 1998, pg. 26-27.
21. Karickhoff, J.R.: "A new treatment for meibomian gland
deficiency", Review of Ophthalmology, April 1999, pg. 176.
22. Karickhoff, J.R.: “Snowplow tool for capsulotomies”,
Ocular Surgery News, March 15, 2001, pg. 16.
PATENT APPLICATION PAPERS:
1. U. S. Patent application paper for "Instrument for measurement
of the diameter of the anterior chamber of the eye". Patent
2. Karickhoff, J.R.: U. S. Patent application paper for Karickhoff
Keratoscope. Patent awarded Jan. 1, 1985