|Keeler’s Wide Angle Twin Mag Ophthalmoscope provides easy assessment of cup-to-disc ratio as an aid to glaucoma diagnosis and monitoring.|
Handheld instruments, such as retinoscopes and ophthalmoscopes, are still valuable in helping ECPs perform thorough exams.
Eye doctors always get excited about the newest technology and high-tech gadgetry that’s introduced to provide better care to patients. But when you think about it, they can also learn important information on relatively simple tools such as handheld diagnostic instruments. For example, every optometry student has a high degree of proficiency with a retino-scope and an ophthalmoscope.
While there has been a trend away from these instruments in favor of more technologically advanced alternatives, many offices still use them since they continue to reveal vital diagnostic information at the same time as offering the convenience of portability. Here’s a look at some of these handheld retinoscopes and ophthalmoscopes that can help you get the job done from just about anywhere.
Users can utilize either the streak mode or spot beam with a simple bulb change in Keeler Instruments, Inc.’s Professional Combi Retino-scope 3.5v. With up to 600 lux of brilliant halogen illumination, this bimodal retinoscope guarantees enough light to refract even the most difficult eyes. The Professional Combi has a patented neu-tralization check allowing rapid confirmation of neutralization. In both streak and spot modes, users can change the beam from divergent to convergent for the ability to cross check the accuracy of the neutral point. With a two-position aperture, a simple finger movement offers a choice of 4mm or 1.7mm aperture to optimize brightness or resolution of the retinal reflex.
The Heine Beta 200 Retinoscope with ParaStop features the latest multi-coated optics for bright fundus reflex and easy detection of the neutralization point. ParaStop was developed for precise selection of a parallel illumination beam. The instrument simplifies and speeds up the precise detection of cylinder axis. XHL Xenon Hal-ogen Tech-nology creates a bright fundus reflex and easy recognition of the neutralization point. An
|The Heine Beta 200 Retinoscope with ParaStop simplifies and speeds up the precise detection of cylinder axis.|
integrated polarization filter eliminates stray light and internal reflexes for a brighter pupil reflex. The Beta 200 works as a streak or spot retinoscope simply by changing the bulb.
Welch Allyn’s Elite Retinoscope makes refractions easy with sharp and clean streaks. An external focusing sleeve improves comfort and maneuverability. The company reports that with 2.8x brightness of standard retinoscopes, superior streak quality enables quicker refractions, even in patients with small pupils. A crossed linear polarizing filter eliminates bothersome glare from trial lenses, helping practitioners perform a more precise exam.
Designed to ensure ultimate control, the Keeler Professional Ophthalmo-scope features lenses and filters that can all be introduced at the touch of a fingertip—without the need to pull away from the patient. It uses Xenon illumination which offers more power and fewer bulb changes. The positive action, easy-access wheel allows users to dial up the required lens quickly and provides control of where users are in the lens range. An extensive range of +29.00D to -30.00D in single diopter steps ensures easy examination of all ocular structures and covers a wide range of patient/user prescriptions.
With full diagnostic capability in a compact size, Keeler’s Vista Pocket Ophthalmoscope is an ideal instrument for the practitioner on the move. Examination of ocular structures is easy with the comprehensive lens range. The lightweight model fits into a pocket and is powered by standard AA batteries.
Wide Angle Twin Mag Ophthal-moscope from Keeler has a 10x field of view. The glass optical system provides non-polarized Xenon illumination to give two exceptional views
|Welch Allyn’s PanOptic Ophthalmoscope incorporates the Glare Extinguishment System to prevent interference from unwanted glare and reflections.|
and magnification. Users can view easily and quickly through undilated pupils, minimizing the chance of missing retinal defects. The instrument also provides assessment of cup-to-disc ratio as an aid to glaucoma diagnosis and monitoring.
Heine’s Beta 200S Ophthalmo-scope employs a unique optical system using aspherical optics so corneal and iris reflexes are eliminated and a full view is guaranteed even with small pupils. The XHL Xenon Halogen Technology provides bright, white light through a recessed, multi-coated viewing window that blocks stray light. Along with seven apertures, the Beta 200S incorporates slit aperture, fixation star, cobalt blue filter, and red-free filter for improved contrast.
A full-featured in-strument at an economical price, the Heine K180 Ophthal-moscope is a standard direct ophthalmoscope. XHL Xenon Halogen Technology can be accessed through a choice of five apertures that are helpful for both large and small pupils.
The Coaxial Vision System in the 3.5 V Coaxial Ophthalmo-scope from Welch Allyn facilitates ophthalmoscopy by en-abling easier entry into undilate pupils, a larger field of view, and reduced glare. A Halogen HPX™ lamp provides light for true tissue color and long-lasting performance. The polarizing filter virtually eliminates corneal reflection while 28 focusing lenses offer a range of -25.00D to +40.00D.
|AN INDISPENSABLE INSTRUMENT One of the most essential tools in an optometrist’s armament of instruments is the binocular indirect ophthalmoscope (BIO). Whether it’s for an examination of an infant, a young patient, or an elderly patient whom the doctor can’t collect data from using a high-tech tool, the BIO you relied so much on back in graduate school becomes your best tool for the job.
Today’s BIOs are easy to use, lightweight, and have optional long-lasting battery power supplies that make the instruments portable from one exam room to another. With state-of-the-art optics, BIOs feature bright adjustable light sources that are effective with smaller pupils. In addition, the illumination systems reduce corneal reflexes and ensure clear, high-resolution images of the fundus.
No other instrument can provide the practitioner with such a thorough view of the far peripheral retina. Fundus findings during BIO may warrant additional testing such as retinal imaging or referral to another specialist. These instruments have saved the vision of countless patients and will continue to be used as an effective instrument in evaluating the ocular health of patients.
Two filter selections in Welch Allyn’s Prestige Coaxial-Plus Ophthalmoscope supply optimum light levels. The neutral filter provides the ideal amount of color-accurate Halogen HPX light for entering healthy eyes without unwanted reflex. Opacity setting offers the brightest Halogen HPX light for views into eyes with cataract or other media opacities.
According to Welch Allyn, the PanOptic Ophthalmoscope provides a 5x wider field of view than standard ophthalmoscopes. The 25º view makes it easier to observe conditions such as hypertension, diabetic retinopathy, and papilledema. In addition to the Halogen HPX lamp, the unit features a patented Glare Extinguishment System that prevents interference from unwanted glare and reflections. The greater working distance improves comfort for both practitioner and patient.
High-tech instruments may get all the glory, but sometimes the most important information can come from your simple handheld retinoscope or ophthalmoscope.
Eric L. Bran, Professional Editor for Vision Care Product News, is in a private group practice at Ridgefield Family Eye Care and The Institute for Sports Vision in Ridgefield, CT.
WHERE TO FIND IT
800-367-4872 • heine.com
Keeler Instruments, Inc.
800-523-5620 • keelerusa.com
800-535-6663 • welchallyn.com