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How to Change an Ophthalmoscope Bulb

How to Change an Ophthalmoscope Bulb

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An otoscope, ophthalmoscope, or retinoscope can be found in virtually every medical or eye care professional’s office. While the otoscope is used to examine the inner part of a patient’s ear, the ophthalmoscope or retinoscope is used by eye care professionals to examine or refract the patient’s eye.

Whether it’s an otoscope, ophthalmoscope, or retinoscope, it’s important you know how to change the bulb and battery — at the minimum. Continue reading to learn more about how to change an ophthalmoscope bulb and battery.

How to Change an Ophthalmoscope Bulb

Safety Tips for Changing an Ophthalmoscope Bulb

Prior to changing the bulb on your ophthalmoscope, you should always allow it to cool. The LEDs or bulbs can reach exceptionally high temperatures. In addition, make sure to adhere to the following replacement bulb safety tips:

  • Make sure the handle is turned off prior to changing a bulb or trying on a new instrument head.
  • Be extra careful whenever using halogen bulbs because they can shatter if damaged or scratched.
  • Only use Keeler bulbs for the instrument it's designed for.
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    Always make sure the replacement bulb is the proper voltage. You can see the correct voltage by looking at the base of the bulb.
How to Change an Ophthalmoscope Bulb
  • Black = LED bulbs
  • Red = 3.6v for rechargeable devices
  • Blue = 2.8v for dry cell battery devices

How to Change an Ophthalmoscope Bulb?

Use the following general instructions for changing the bulb on your ophthalmoscope.

How to Change an Ophthalmoscope Bulb
  • Loosen the screw set securing the handle to the instrument head.
  • Take the head off by holding it horizontally with one hand while turning the handle counterclockwise with your other hand.
  • Make sure to avoid letting the bulb or battery drop out whenever the handle and head are separated.
  • Remove the old bulb and safely dispose of it in accordance with your local environmental rules.
  • Replace the bulb with a new bulb of the correct type and voltage. Make sure the location key is aligned with the aperture in the head of the instrument.
  • Refit the handle to the head of the device by rotating it clockwise while holding the device horizontal. If necessary, secure the head in place with the screw set provided.

Safety Tips for Replacing Ophthalmoscope Batteries

  • Never use a battery that is corroded, leaking, deformed or visually damaged. If you come in contact with a leaking battery or damaged battery, you should always handle it with care.
  • Always ensure the battery orientation is correct. Failure to do so could result in damage to the equipment or personal injury.
  • You should never mix battery types.
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    Never attempt to recharge non-rechargeable batteries.
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    If the temperature in an environment falls below 0˚C or exceeds 40˚C, you should avoid charging the battery in this environment.
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    Whenever you replace a rechargeable cell, make sure to turn your handle off and insert the new cell. Then replace the bottom cap and place the handle in to the charging base.
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    If you’re not using your device for long periods of time, dry cell batteries should be removed.
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    If the battery short circuits, you can activate the built-in protection measure by placing your handle on the charger until your LED flashes.
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    Avoid modifying or disassembling the battery because there are no serviceable parts inside.
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    Always dispose of your battery in line with your local environmental regulations.
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    Do not dispose of batteries in short circuit, puncture, or fire.

Top-Quality Ophthalmoscope Bulbs

Accurately diagnosing your patient’s condition will depend on a range of factors, and a top-quality bulb undoubtedly ranks as one of the top factors. Without proper illumination, you will not be able to use your diagnostic skills to the fullest. Because of this, Keeler Ophthalmic Instruments offers a range of the top-of-the-line genuine LED, Xenon, and Halogen technology designed to yield a brighter, whiter illumination and a longer life. View all of Keeler’s top ophthalmoscope bulbs.

Contact Keeler Ophthalmic Instruments

Since 1917, Keeler Ophthalmic Instruments has been manufacturing cutting-edge solutions. We offer a full range of ophthalmic instruments designed to help you provide your patients with the best possible diagnosis and treatment.

Contact Keeler Ophthalmic Instruments today.

About the Author Eugene VanArsdale

Eugene is the Director of Marketing Communications at Keeler Instruments. He has been with Keeler since 1982 and is co-holder of two patents for the company. Eugene has a true passion for the eye care industry and has dedicated himself to understanding the ins and outs of the optometric and ophthalmic equipment market.