Dr Karickhoff'S Unique Career In Innovation

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.

Diagram of the human eye
©

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 and Significant Contributions

Here are some of Dr. Karickhoff’s innovations (in blue) and significant contributions (in green) for each of the 14 major eye structures.

  1. Eyelids:
    • New treatment for oil gland deficiency (OC#11)
  2. Cornea:
    • 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)
  6. Zonules:
    • Concept of reverse pupillary block (OC#6)
  7. Iris:
    • Concept of using transillumination to perform iridotomy (OC#8)
    • Treatment of pigmentary glaucoma with iridotomy (OC#7)
  8. Ciliary body:
    • Simplified tonography (OC#9)
  9. Retina:
    • Karickhoff Laser Lens for pan retinal photocoagulation (MD#1)
  10. Macula:
    • Karickhoff Flying Corpuscle Viewer (MD#3)
  11. Optic nerve:
    • Karickhoff Flying Corpuscle Viewer (MD#3)
    • Translucent occluder in visual field testing (NRP#13)
  12. Choroid:
    • Visual field study in 600 cases of malignant melanoma (RP#1)
  13. Sclera:
    • Schiotz Shoove test (based on scleral rigidity) (OC#1)
  14. Vitreous:
    • 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

Mosaic Matcher™

Mosaic Matcher


Mosaic Matcher

Karickhoff Keratoscope™

Karickhoff Keratoscope

Anterior Chamber Caliper
(U.S. Patent)

Anterior Chamber Caliper

Simplified Outflow
Facility Testing

Simplified Outflow Facility Testing

Concept of reverse
pupillary block

Concept of reverse pupillary block

Iridotomy to treat
pigmentary glaucoma

Irodotomy to treat pigmentary glaucoma<

Karickhoff Laser Lens

Karickhoff Laser Lens

Karickhoff Flying
Corpuscle Viewer™

Karickhoff Flying Corpuscle Viewer

Translucent occluder
for visual fields
(U.S. Patent)

Translucent occluder for visual fields

Surgical contact lenses
for floater treatment

Surgical contact lenses for floater treatment

F.D.A. application and
approval for floater treatment

F.D.A. application and approval for floater treatment

Book, Laser Treatment
of Eye Floaters

Book, Laser Treatment of Eye Floaters

Dr. Karickhoff's Curriculum Vitae

John R. Karickhoff, M.D.
313 Park Avenue
Falls Church, Virginia 22046

Table Of Contents:

  • Education
  • Certification
  • Military service
  • Licensure
  • Memberships
  • Hospital affiliation
  • University affiliation
  • Employment
  • 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)
  • Community service
  • Refereed publications (19)
  • Non-refereed publications (22)
  • Patent application papers (2)

Born:

  • Spencer, West Virginia. May 4, 1938

Education:

  • 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.)
  • College activities:
    • 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

Certification:

  • Diplomate, American Board of Ophthalmology, October 21, 1970
  • Diplomate, National Board of Medical Examiners, #77822, July 1, 1965

Military Service:

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.

Licensure:

  • 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

Memberships:

  • 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.

Hospital Affiliation:

  • 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.

University Affiliation:

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.

Employment:

  • 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 years.
  • Private practice of ophthalmology (group practice) at the Falls Church Medical Center, in Falls Church, Virginia, 1970 until 1976.
  • 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 groups.

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 nationwide 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 Surgidev Corporation.
  • 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™
    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™
    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™
    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 an implant.
  • 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 Instruments Inc.
  • 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 keratotomy 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

Clinical Firsts:

  • 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

Television Tapes:

I performed the surgery, wrote the script, narrated, supplied the music, and supervised the editing and production of each tape below.

  • 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 Virginia, 1971
  • "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

Community Service:

  • 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, 1970-present.
  • 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.

Refereed Publications:

  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, 1980
  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. 7:348-350, 1981
  7. Karickhoff, J.R.: "Elimination of distance glasses in implant patients."
    Contact and Intraocular Lens Medical Journal. 8:114-117, 1982
  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. 10. Karickhoff, J.R.: "Demonstrating the cataract to the patient".
    Amer. Intra-ocular Implant Society Journal. Winter issue, pg. 51-52, 1983
  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, 428
  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. 658-660
  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, pg. 269-277.
  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.

Non-Refereed Publications:

  1. Karickhoff, J.R.: "In my hands."
    Ophthalmology Times. 6:61-64, 1981
  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. 70-71, 1983
  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, pg. 39.
  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 awarded 1982
  2. Karickhoff, J.R.: U. S. Patent application paper for Karickhoff Keratoscope.
    Patent awarded Jan. 1, 1985

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John Karickhoff, M.D. • 313 Park Avenue • Falls Church, VA 22046