A Comparison of Retinal, Fundus Cameras

A Comparison of Retinal Fundus Cameras

Users Survey Results

TERRY W. GEORGE, RBP, SALVATORE A. D' ANNA

The purpose of this paper is to present the different models of fundus cameras available on the current market. Included is a users survey for which 775 questionnaires were sent to ophthalmic photographers for evaluation of their equipment. A total of 394 questionnaires were returned. Possible bias in the users survey was decreased by excluding eight of the returned questionnaires that indicated proprietary interests. Thirty-two photographers reported that they used two or more camera systems. The survey results do not include all of the cameras that are currently available; only the camera models for which evaluations were returned.

Some of the returned questionnaires listed cost as one of the best or worst features of a particular system. However, this survey reflects only the technical data supplied by the users, as cost may not reflect the quality of a system. The authors have taken into consideration the fact that the manufacturers of fundus cameras are continuously striving to update their products and realize that upon publication of this article newer models may be available. The authors wish to note that neither has any proprietary interest in the development or marketing of any fundus camera system and to be as objective as possible, they did not contribute to the technical data.

211 RETINOPHOT

Manufacturer:

aus Jena (Seiler Instrument & Manufacturing Co, Inc.) 170 E. Kirbham Ave. St. Louis, Missouri 63119 TVVX 910-760-1658

From The Wilmer Institute, The Johns Hopkins University, Baltimore, Marylland.

GEORGE AND D'ANNA • RETINAL FUNDUS CAMERAS

Price: Field of view of retina: Photographic magnification for

35 mm: Working distance (front of lens

to eye): Diopter compensation: Astigmatic compensation: Electronic flash source

maximum output: Data recording for fluorescein

angiogram: Instant photography capability: Vertical tilt adjustment:

$15,430

40°,29°, 14.5°

1.9x 2.6x 5.3x

Yes Yes 500 Joules

Yes Yes

CANON CF 60 ZA

Manufacturer:

Canon U.S.A., Inc. One Canon Plaza, Lake Success Long Island, New York 11040 Phone (516) 488-6700

$18,950 with tilt 60° to 20° zoom 1.7-5.0x

Yes No 300 ws

Yes Yes optional Focusing aid split lines in the range of -2 to +15 diopters

82 OPHTHALMOLOGY • INSTRUMENT AND BOOK SUPPLEMENT 1983

to eye):

Diopter compensation: Astigmatic compensation: Electronic flash source

maximum output:

Data recording for fluorescein angiogram:

Instant photography capability: Vertical tilt adjustment:

Price:

Field of view of retina:

CANON CF-60 S

Manufacturer:

$14,500 60° 1.7x

300 ws

Yes optional

Focusing aid split lines in the range of -12 to +15 diopters

COHERENT FUNDUS I

Manufacturer:

Coherent Medical Division 3270 West Bayshore Road, P.O. Box 10122 Palo Alto, California 94303 Phone (415) 858-2250

$14,500 45°, 30°, 20°

Photographic magnification for 35 mm:

Working distance (front of lens to eye):

Diopter compensation: Astigmatic · compensation: Electronic flash source

angiogram:

to eye):

maximum output: Instant photography capability: Vertical tilt adjustment:

1.7x 2.5x 3.7x

No 300 ws

KOWA He-X

Manufacturer:

Kowa Optimed, Inc. 2001 S. Vermont Avenue Torrance, California 90502 Phone (213) 327-1913 Telex: W.U. 687-345

$7,000

45°, 30°, 20°

1.7x 2.5x 3.7x

No 50 ws

Yes optional

IOWA RCXF

Manufacturer:

$10,000

45°, 30°,20°

1.7x 2.5x 3.7x

Yes No 150 ws

Yes Yes optional

IOWA RCXV

Manufacturer:

angiogram:

$13,500 45°, 30°, 20° 1.7x 2.5x 3.7x

Yes No 300 ws

Yes Optional

NIKON RETINAPAN 45-11

Manufacturer:

Nikon Inc, Instrument Division 623 Stewart Avenue Garden City, New York 11530 Phone (516) 222-0200 Telex: 967806

$13,500 45° With adapter 45°, 30°, 20° 1.7 at 45°

Yes No 200 ws

Yes Yes

:~=-':----=.-

----~-.. _---

NIION NFC-&O

Manufacturer:

Nikon Inc, Instrument Division 623 Stewart Avenue Garden City, New York 11530 U.S.A. Phone (516) 222-0200 Telex: 967806

$18,500

60 0 , 90 0 with accessory lens

1.1x @ 60 0

No 500 ws

Yes optional

OL YMPUS GRC-&

Manufacturer:

Olympus Optical Co., Ltd. San-EI Building Nishi Shin Juku 1-Chrome Shin JuKu-Ku Tokyo, Japan

Distributor:

Olympus Corporation 4 Nevada Drive New Hyde Park, New York 11042

Not available in U.S.A. 28 0 '

Yes No 400 ws

TOPCON TRC-JE

Manufacturer:

Topcon Instrument Corporation of America 65 West Century Road Paramus, New Jersey 07652 Phone (201) 261-9450 Telex: 134338

$4,450

Yes No 100 ws

Yes No

to e,e): Diopter compensation: Astigmatic compensation: Electronic flash source

angiogram: In~tant photograph, capablllt,: Vertical tilt adjustment:

TOPCON TRC-FE

Manufacturer:

$6,850 30 0

Yes No 300 ws

Yes optional Optional

TOPCON TRC-W

Manufacturer:

Topcon Instrument Corporation of America 65 West Century Road Paramus, New Jersey 07652 Phone (201) 261-9450 Telex:134338

to eye): .

angiogram: Instant photography capability:

$10,580; $12,450 with tilt 45°, 30°,20° 1.7x 2.5x 3.7x

Yes No 300 ws

Yes Optional

TOPCON TRC-50Y

Manufacturer:

Topcon Instrument Corporation of America 65 West Century Road Paramus, New Jersey 07652 Phone (201) 261-9450 Telex:134338

$12,450 with vertical tilt 50°, 35°, 20° 1.7x 2.5x 3.7x

Yes Yes 300 ws

to eye):

angiogram: Instant photography capability: Vertical tilt adjustment: Binocular observation:

Price:

Field of view of retina:

ZEISS FK30; FK30 WITH TILT AND SBOfF POWER SUPPLY

Manufacturer:

Carl Zeiss, Inc. 444 Fifth Avenue New York, New York 10018 Phone (212) 736-6070

FK·30

$13,000 30° 2.5x

Pulsed quality light source

Yes optional

ZEISS FC50

Manufacturer:

Carl Zeiss, Inc. 444 Fifth Avenue New York, New York 10018 Phone (212) 736-6070

$35,000 50°, 30°

FK·30 with Tilt and SBG/F Power Supply

$17,000 30° 2.5X

720 ws

angiogram:

Instant photography capability: Vertical tilt adjustment: Binocular observation: Simultaneous stereo

photography:

to eye):

1.5X/2.5X

Yes Yes

720 ws

Yes Yes

Specialty Cameras

CANON CR2-45NMA-NON-MYDRIATIC

Manufacturer:

$11,450

45° 1.8x

No 300 ws

Optional

Price:

Field of view of retina: Photographic magnification for

35 mm:

angiogram:

TRC NW2 NON-MYDRIATIC

Manufacturer:

$11,500 45° 1.6x

300 ws

"DOCUSTAR"-NON-MYDRIATIC

Manufacturer:

A.D. Scientific Instruments Eggert and Seegor, P.O. Box 123 Buffalo, New York 14246 Phone: (800) 828-7163

Price: Photographic magnification:

Field of view: Diopter correction: Maximum flash: Instant photography: Working distance: External fluorescein:

Price: Three aspherical lenses:

Photographic film: illumination exposure: Three shutter speeds: F-number: Foot switch electromagnetic

operation

Price: Field of view of retina:

$3,000

7x Recording 5x Viewing

18° + -20 Diopter

779 Polaroid Professional 2 mm

2 expo/print

ALCON OP Manufacturer:

Asahi Optical Co., Japan

Distributor:

Surgical Products Division Alcon Laboratories, Inc. Fort Worth Texas, 76101 P.O. Box 1959 Phone (817) 293-0450

$2,695

15, Diopter with 4x mag. 20, Diopter with 3x mag. 20, Diopter with 2x mag. 110 cartridge

6V, lOW

1/45, 1/60, 1/90 sec. 5.3 at infinity

IOWA RC-2 Manufacturer:

Kowa Optimed, Inc. 2001 S. Vermont Avenue Torrance, California 90502 Phone (213) 327-1913 Telex: 687-345

$3,000 30°

Price:

Field of view of retina: Photographic magnification for

35 mm: Diopter compensation: Astigmatic compensation: Data recording for fluorescein

angiogram:

No 50 ws

POMERANTZEFF EQUATOR PLUS CAMERA Manufacturer:

Medical Instrument Research Associates, Inc. 87 Rumford Avenue, Woltham, MA 02154 Phone (617) 894-2200 Telex: 94-0533 Cable "MIRACO"

Without electronic flash: $25,500 With electronic flash: $31,500 >Non Contact 127°, >contact 148°

No Optional

Optional

angiogram: Instant photography capability:

Vertical tilt adjustment: Simultaneous stereo

photography

TOPCON THC-55

Manufacturer:

Topcon Instruments Corporation of America 65 West Century Road Paramus, New Jersey 07652 Phone (201) 261-9450 Telex: 134338

$13,950

30° 2,56x

No 300 ws

Yes timer

USERS COMMENTS ON MAJOR OPERATING FEATURES OF FUNDUS CAMERA SYSTEMS

# of Make and Model Replies Best Features Worst Features Improvement Needed

aus JENA Binocular Viewing Maneuverability, especially Internal fixation, table and RETINOPHOT II vertical movements chin rest to accomodate

wheelchair and stout patients

CANON 60 CF ZA 30 Optics, wide field 60°, Large pupil opening Better fixation light, table variable zoom, split line required, awkward filter and chin rest to focusing aid system, placement of accomodate wheelchairs

barrier filter, image and stout patients quality poor at 20°, service

KOWA RC II 10 Portability Optics, stability, focusing, Improve optics small distance to cornea

KOWA RC XV 39 Ease of operation, auto Optics, central artifact in Astigmatic control + exposure control, . color slides, large pupil

KOWA RCW 8 variable magnification, opening required, foot cordless camera backs, pedal placement, fixation good viewing light for light fluorescein, wheelchair accessability

NIKON RETINAPAN 4 Optics, wide angle 45°, Large pupil opening Improve tilt mechanism 45 II reliability of camera required, fixation light,

back & motor drives placement of barrier filter

OL YMPUS (NOT 2 Optics, reliability Narrow depth of field Vertical tilt mechanism MARKETED IN USA)

POMERANTZEFF 4 Extreme wide angle Corneal contact system, Brighter viewing light, EQUATOR·PLUS optics, focusing faster recycle time for

TOPCON TRC·F 58 Cost, reliability, ease of Optics, fixation light Astigmatism correction, SERIES operation improved film backs

TOPCON W SERIES 51 Variable angle, ease of Fixation light, barrier Table and chin rest to operation, focusing placement, optics, large accomodate wheelchair

pupil opening required and stout patients, astigmatism correction

TOPCON TRC 50 3 Auto exposure control, small pupil device, astigmatism correction, optics

TOPCON SS Binocular viewing Excess cables, viewing light

CARL ZEISS FFI, 175 Optics, astigmatism Excess cables, film backs Camera trigger built into FFII, FFIII correction small pupil and motor drives, joystick, service (DISCONTINUED) size needed, ease of instant photographic improvement,

operation, stereo system, poor table and dissapointed with this separator, reliability, chinrest for wheelchair camera being filter mechanism and stout patients discontinued

r ""T1

• 4.

» 5·

DISCUSSION

The retinal fundus camera is an indispensable tool for the ophthalmologist for documentation of the ocular fundi. There are numerous models available on the market today, with no one fundus camera best suited for all applications. They vary in cost, size, angle of view, magnification, and optical quality. There are also differences in mechanical soundness, ease of use, automatic features, and gadgetry.

Many of the fundus camera features may be reviewed from the above listings, but a prospective purchaser will

be well advised to inspect personally such features as convenience of control placement, optical and mechanical quality, and overall ease of use.

When reviewing the users survey, one should take into consideration the number of replies received for each system, for only a few replies may not (eflect a true evaluation of an instrument.

ACKNOWLEDGMENT

The authors wish to thank Ms. Cheryl Aver for assistance in the statistical analysis of the users survey.

A Comparison of Retinal, Fundus Cameras

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