Which Instrument Is Used To Examine The Interior Of The Eye

5 Tools & Instruments Used by an Ophthalmologist

Friday, November 19th, 2021 is a Friday. Ophthalmologists have a wealth of medical equipment at their disposal to assist them in the process of doing an eye examination. This list of examples of five tools and equipment used by an ophthalmologist is useful whether you’re a student preparing to open your own clinic or a patient looking to get more familiar with the procedures.

Tonometer

A tonometer is a device that aids in the measurement of intraocular pressure (IOP) in the eye by an optometrist. Tonometry tests can be performed in a variety of ways, including non-contact tonometry using an air puff tonometer and indentation tonometry with a Tono-pen or other equipment. The importance of scheduling frequent tonometry tests cannot be overstated, as they can aid in the identification of internal eye pressure and the determination of whether a patient is at risk of vision loss due to glaucoma and a damaged optic nerve.

Eye Chart

Ophthalmologists, as well as all other types of eye physicians, must be prepared with an eye chart at the ready. The Snellen and the Sloan models are the two most common types of eye charts used today. Snellen eye charts are the most widely used charts in modern-day optometry because they are easy to read. A patient will read along the lines of this chart from a distance until they are no longer able to distinguish the individual letters any more. Using this method, the doctor may determine which prescription lenses will be the most beneficial for his or her patient.

Ophthalmoscope

It is an instrument that the ophthalmologist uses to inspect the inside of the eye with a magnifying glass. The use of a light source in conjunction with built-in mirrors allows the doctor to examine the retina of the eye with great care. A dilating eye drop is usually applied to the patient’s eye in order for the doctor to gain a clearer view of the interior of the eye during the procedure.

Phoropter

An instrument known as a phoropter is used to evaluate refractive error and allows a doctor to test and prescribe the appropriate lenses to a patient. If you’ve ever had an eye exam, you’re probably familiar with the phoropter, which is the gadget that the eye doctor uses to assess various lens strengths while you read off the Snellen chart. As the doctor switches between two different lens strengths, he or she will frequently ask A and B questions.

Retinoscope

For patients who are too old or have physical or mental issues to respond to the doctor’s A and B questions, the ophthalmologist will use a retinoscope to evaluate refractive error instead of asking them the same questions. The ophthalmologist will send a beam of light onto the retina in order to analyze the movement of the nerve cells inside. In order to establish the right prescription for a patient, the retinoscope allows the doctor to position several lenses in front of the patient’s eye until the movement is stopped by the lenses.

If you own and operate your own ophthalmic office and require tonometry equipment such as those listed above, see Automated Ophthalmics, Inc. for more information.

Types of Eye Exam Instruments – What Happens at an Eye Exam?

Many different pieces of equipment as well as various different devices are used in a comprehensive eye examination. A variety of diagnostic tests will be done during your comprehensive eye checkup in Medford. Some of the devices we use at our office, along with brief descriptions of what they accomplish, are included below. It is possible to create high-quality diagnostic pictures of the interior of the eye using a digital retinal camera, which is also known as a fundus camera, although this is not common practice.

  • Typically, the patient sits in front of the phoropter and examines an eye chart via the lens of the instrument.
  • This process is performed numerous times with varied parameters until your precise prescription is discovered and recorded.
  • In order to accomplish this, researchers must measure how light changes as it enters a person’s eye.
  • The patient takes a seat and rests their chin on a chin rest to relieve pressure.
  • As the machine collects readings to identify when the image is on the retina, the picture slides in and out of focus as the focus is adjusted.
  • Slit Lamp: A slit lamp is a microscope with a light attached that allows your doctor to study the eye in greater detail than with a standard microscope.
  • Using specific glasses, it is possible to inspect the inside of the eye as well as the outside of it.
  • For example, astigmatism, keratonus, corneal scarring and corneal distortion are all disorders that are measured and diagnosed with this instrument.
  • Tonometer: A tonometer is a device that measures the pressure in the eye and can aid in the detection of glaucoma in patients.

Furthermore, it is important in assessing how effectively the eyes operate together, accommodate, and allow for good vision. Contact Medical Eye Center at 541-779-4711 or [email protected] if you’re ready to arrange an eye test in Medford.

5 Common Eye Doctor Tools Used During Your Eye Exam

What exactly is it? Eye exams, like any medical tests, may be frightening for people of all ages, young and elderly alike. However, this should not be the case! A visit to the optometrist is essential to maintaining your general health. So, what exactly frightens people? It’s possible that you’ll see some of the most often utilized eye doctor instruments throughout your examination. While medical equipment might appear scary at first glance, the more you learn about it, the less terrifying it gets.

1. Snellen Chart

The Snellen Chart is one of the most well-known tools used by optometrists and other eye care professionals. From top to bottom, it is represented by a large letter “E” with a sequence of smaller and smaller letters on each line, culminating in a large letter “E.” Patients are instructed to close one or both of their eyes and read the tiniest line that they are capable of reading. The Snellen Chart is used to assess visual acuity, or the ability to distinguish between objects in the distance.

It is a comparison of a patient’s eyesight to that of a healthy individual on the street.

2. Phoropter

The Phoropter is the tool that appears to be from another planet in the image above. In order to calculate a prescription for corrective lenses such as glasses or contacts, it detects refractive error (myopia, hyperopia, etc.). The Phoropter is a subjective instrument, which means that the patient must describe to the eye doctor what he or she is seeing through the various lenses that have been fitted. After asking a series of A vs B questions, the optometrist will ask the patient to choose which lens is clearer out of the two.

3. Slit Lamp

It is a microscope with an attached narrow (slit) light source that is used for research. In this step of the examination, an eye doctor examines the front and exterior elements of the patient’s eye, among other things. This comprises things like the eyelid, iris, and cornea, amongst other components. This instrument is used by eye specialists to check for any abnormalities or disorders that may manifest themselves in the anterior segment of the eye. While having light in your eyes is not usually “pleasant,” it is necessary and harmless in the majority of cases.

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4. Tonometer

The non-contact Tonometer, sometimes known as the gadget that blasts a puff of air into your eye, is well-known to the majority of people. The Tonometer is another non-invasive and simple test that detects pressure in the eye (formally known as Intraocular pressure). It is vital to measure intraocular pressure (IOP) in order to ensure that patient eyes have the appropriate internal pressure to retain their form and avoid dangerous circumstances.

In terms of measurement, there are various options available, but the non-contact Tonometer has risen in favor in recent years.

5. Ophthalmoscope

The ophthalmoscope is a portable equipment that is used to inspect the inside of the eye’s cornea. This test is frequently performed in conjunction with pupil dilation. When an eye doctor dilates a patient’s pupils, he or she is able to see more clearly into the structures behind the pupil. While pupil dilation allows for a more thorough examination, it is not always essential, and the inside of the eye can still be examined using an Ophthalmoscope even when the pupil is not dilated. When your eye doctor pulls out his or her instruments during your next eye exam, you’ll be able to tell exactly what you’re looking at.

A visit to the eye doctor is not a frightening experience at all.

Think about scheduling an appointment now if it’s been sometime since your last visit.

Gallery of Eye Examination Equipment

Even if you have never had a full eye checkup, you may be surprised by the amount of tests your eye doctor will run on your eyes. Many different pieces of equipment and numerous different tools are used in a comprehensive eye exam. The following is a list of the most frequently used equipment.

Exam Room

courtesy of Westend61 / Getty Images When visiting an eye doctor’s office, a typical examination room will have an exam chair, an exam phoropter, an eye chart, an examination slit light, and a stool for the eye care practitioner.

Phoropter

Photograph by PaulVinten / Getty Images When an eye examination is performed, phoropter (also known as phoroptor) instruments are utilized to evaluate refractive error and calculate eyeglass prescriptions. Typically, the patient sits in front of the phoropter and examines an eye chart via the lens of the instrument. The optometristthen makes adjustments to the patient’s lenses and other settings while soliciting input on which adjustments provide the greatest vision.

Binocular Indirect Ophthalmoscope

Staff Sgt. Victoria Sneed of the United States Air Force contributed to this image. Ophtalmoscopes are instruments used for inspecting the inner structures of the eye, particularly the retina. They are comprised of a mirror that reflects light into the eye and a central hole that allows the eye to be viewed. A binocular indirect ophthalmoscope (BIO) is a device that is worn on the head of an eye doctor, allowing him or her to examine the eyes with both hands.

Autorefractor

Photograph by SerafinoMozzo / Getty Images Autorefractors are machines that are used to determine a person’s refractive error and prescription for eyeglasses or contact lenses, respectively. In order to accomplish this, researchers must measure how light changes as it enters a person’s eye. Rapidity, simplicity, and painlessness characterize the automated refraction procedure. The patient takes a seat and rests their chin on a chin rest to relieve pressure. They stare into the machine, one eye at a time, at an image that is contained within.

A number of readings are obtained, and the system averages them all together to generate a prescription. During this process, the patient is not expected to provide any input.

Slit Lamp

Photograph by Stefan Kiefer / Getty Images A slit lamp is a microscope with a light attached, which allows the doctor to study the eye in greater detail than with a standard microscope. The cornea, iris, and lens of the eye are all visible with this equipment, as are other parts of the eye. It is also possible to see at the back of the eye using special lenses if you have them. Slit lamp examinations provide a unique opportunity for the practitioner to have a close-up look at the interior of your eyes.

Tonometer

Photograph by Arthur Tilley / Getty Images The pressure in the eye is measured with the use of a tonometer. The test is used to aid in the detection of glaucoma. When using a tonometer that comes into direct contact with the eye, numbing solutions are employed. Some doctors prefer to utilize the air-puff tonometer, which does not require the application of numbing drops. A tonometer is a device that monitors the production of aqueous humor, which is a clear liquid found inside the eye, as well as the rate at which it drains into the surrounding tissue of the cornea.

Retinoscope and Direct Ophthalmoscope

Image courtesy of ARZTSAMUI / Getty Images In order for an eye doctor to view the reflection off the retina, a retinoscope is used to beam light into a patient’s eye and examine the reflection off the retina. The light is pushed in and out of the pupil on a regular basis. It is particularly beneficial in the prescription of corrective lenses for patients who are unable to communicate verbally with their eye specialist. It is also important in measuring how effectively the eyes work together (accommodate) in order to see clearly in dim light.

It is comprised of a mirror that reflects light into the eye and a central hole through which the eye is checked for any abnormalities or diseases.

8 Tools used by Optometrist For Eye Testing

It is understandable that many people avoid or repeatedly delay their yearly eye examinations with an optometrist since the equipment they employ appear daunting to them. Although painful and inefficient, these gadgets have the advantage of being quite accurate when it comes to assessing eye health condition. Here is a list of the standard eye exam instruments that are used by both optometrists and ophthalmologists during their examinations of their patients.

1. Tonometer

This apparatus, which is one of the oldest still in use, is used to monitor the pressure of the fluids within the eyeball. If the pressure in the eyes rises over a certain point, it has the potential to irreversibly damage the optic nerve. Glaucoma is the medical term for this high-pressure condition. A tonometer measures the pressure in the eye by lightly contacting the cornea with its fingertip.

In order to use a tonometer that actually touches the eye, numbing drops must be injected into the eyes first. Additionally, a tonometer that breathes air into the eyes is used by many clinicians to monitor ocular pressure and check for glaucoma.

2. Phoropter

The phoropter is one of the most basic instruments used by optometrists to test the patient’s refractive error and establish the appropriate eyeglass prescription. The patient is told to take a seat in front of an eye chart that is located a reasonable distance away. The patient is asked to try out many different lenses before telling the optometrist which one improves his vision the most. Due to the subjective nature of this test, the right prescription is determined only by the patient’s input, who selects which lens delivers the greatest vision.

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3.Retinoscope

Because of specific physical or mental issues, patients who are unable to provide feedback to the optometrist are measured with the use of a retinoscope, which is used to establish the right prescription for eyeglasses or contact lenses. It is made up of a mirror that beams light into the eyes and a hole in the middle of the mirror, through which the eyes are seen and evaluated.

4. Autorefractor

In addition to the autorefractor, which measures the refractive error of the eyes and prescribes glasses, there are additional devices that may be employed. Patients are forced to gaze into the machine, which displays an image on the screen that is in and out of focus at certain points. The gadget collects readings and decides whether the picture has been successfully transferred to the retina. On the basis of the averages of multiple such measurements, a prescription is created.

5. Snellen Chart

The Snellen Chart is one of the most often used tools among optometrists, and it may be found in every office. Physical or digital charts with alphabets arranged in decreasing size are set around 20 feet (6 meters) away from the patient and placed in the same order as the patient’s letters. One eye of the patient is covered at a time, while the right prescription for the other eye is established by the technician. During the procedure, patients are instructed to read the tiniest letters they can while the optometrist adds various lenses to a metallic eyeglass frame that is installed on their faces.

6. Retinal Camera

A retinal camera is a device that is used to collect images of the internal surface of the eye, most commonly the retina, and transmit them to a computer. It is a customized low-powered microscope with an attached camera that is used for scientific research. A retinal camera enables an ophthalmologist to examine the patient’s retina, track changes in the retina over time, and diagnose disorders using images obtained from the retina. In order to obtain clear photos of different sections of the retina, modern retinal cameras acquire a lot of images using a variety of filtering techniques.

7. Ophthalmoscope

Optical instruments such as an Ophthalmoscope are another tool that optometrists employ to inspect the inside of the eye. It is made up of a light source with built-in mirrors and lenses, and it is particularly useful for inspecting the retina because of its high efficiency.

It is necessary to dilate the patient’s pupils using eye drops in order to obtain a clear view of the inside of the eye during the procedure. The ophthalmoscope aids the doctor in recognizing and identifying the signs and symptoms of potential eye illnesses.

8. VT 1 Vision Screener

Optometrists use theVT 1 Vision Screener to promptly detect and identify serious vision abnormalities. It is a high-performance computerized instrument that is easy to use. Because of its lightweight and portability, it is very simple to operate. It is non-invasive and does not need dilatation of the pupils to screen for a wide spectrum of eye illnesses. It is possible to detect visual impairments in all age groups, including children as young as six months of age, using a vision screener. These instruments serve as stepping stones in the field of eyesight and health.

Doctors and other healthcare professionals are provided with access to this eye-testing equipment, which allows them to provide patients with the quality treatment they need.

Look no further.

Take a look at our eyesight screening products.

ophthalmoscope

The term “f-thăl′m-skp′” refers to a device for inspecting the inner structures of the eye, particularly the retina, that is characterized by the presence both of a mirror that reflects light into the eye and a central hole through which the eye may be inspected. oph·thal′mo·scop′ic(-skŏp′ĭk),oph·thal′mo·scop′i·cal(-ĭ-kəl)adj.oph′thal·mos′co·py (f′thăl-ms′k-p, f′thăl-ms′k-p)n. The Fifth Edition of the American Heritage® Dictionary of the English Language is now available. Houghton Mifflin Harcourt Publishing Company has copyright protection for the year 2016.

All intellectual property rights are retained.

ophthalmoscope

an instrument for inspecting the inside of the eye (ophthalmoscopi)n(Medicine) an instrument for inspecting the interior of the eye (ophthalmoscopi)n cadj Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 – HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014 – Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 – Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 – Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 – Collins English Dictionary – Complete and Unabridged, 12th Edition

oph thal mo scope

The term “fl mskop” refers to a device that is used to observe the inside of the eye. oph thal’mo scop′ic(-skp k)adj.oph thal’mo mos′co py(-ms k pi)n., Kernerman Webster’s College Dictionary, Random House Kernerman Webster’s College Dictionary, 2010 K Dictionaries Ltd. Random House, Inc. retains ownership of the copyright for the years 2005, 1997, and 1991.

ophthalmoscope

Through the use of an iris-shaded light, an instrument may be utilized to see into the eye and investigate its internal structures.

A Dictionary of Unfamiliar Words Organized by Diagram Group Diagram Visual Information Limited has copyright protection for the year 2008. Thesaurus Antonyms Words that are related Synonyms Legend:

Noun 1. ophthalmoscope- medical instrument for examining the retina of the eyeorthoscope- an ophthalmoscope with a layer of water to neutralize the refraction of the cornea

Farlex clipart collection is based on the WordNet 3.0 database. Farlex Inc., Princeton University, and Farlex, Inc., 2003-2012 Translationsoftalmoskop Collins Spanish Dictionary – Complete and Unabridged, Eighth Edition (2005, Collins Publishing Company) William Collins Sons Co. Ltd. was established in 1971 and 1988. The HarperCollins Publishers, 1992-1993, 1996-1997, 2000-2003-2005, Collins German Dictionary – Complete and Unabridged, 7th Edition, 2005, by Collins Publishing Company. William Collins Sons Co.

was established in 1980.

oph·thal·mo·scope

The n.oftalmoscopio is a medical equipment that is used to visualize the inside of the eye. Farlex 2012 is a medical dictionary that is bilingual in English and Spanish.

ophthalmoscope

Noftalmoscopio is an English-Spanish/Spanish-English Medical Dictionary that was developed by Noftalmoscopio. The McGraw-Hill Companies, Inc. owns the copyright to this work. All intellectual property rights are retained.

MOD 140 Unit 4 Terminology Psychology & Special Senses

A B
ophthalm/o eye
conjunctiv/o to join together
rhin/o nose
retina inner most layer of the eyecontaining rods and cones
cornea clear transparent covering of the eye
iris middle layer of the eyeball that controls the amt of light entering the eye
pupil the center of the iris that controls the amt of light entering the eye
ciliary body middle layer of the surface of the eyeball that holds and moves the lens
accommodation eye’s ability to adjust to maintain a clear image of objects
rod photosensitive cells in the retina that responds to dim light and are used in night vision
cones photosensitive cell in the retina that responds ti bright light and are used in color vision
Strabismus Cataract a disorder caused by weakness in the external eye muscles, causing eyes to look in different directions
glaucoma conditioned caused by an increase in the amt of pressure in the eye, which can lead to blindness
myopia near sighted
hyperopia far sighted
presbyopia loss of elasticity in the eye’s lens, that causes inability to focus on close objects
ophthalmoscope instrument used to examine the interior of the eye
tympanic membrane separates the outer and middle ears
cochlea spiral-shaped structure that formsa portion of the inner ear
semicircular canals three canals in the inner ear that are part of the labyrinth
vertigo one’s surroundings are spinning around them
Meniere’s disease inner ear disorder, that affects balance and hearing
otitis media inflammation of the inner ear
otoscope instrument used to examine the eardrum
cataract clouding of normally clear lens of the eye
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Ophthalmoscope

Galeviews was last modified on May 09, 2018. An ophthalmoscope is a medical device that allows a doctor to inspect the inside of the eye in order to discover abnormalities or symptoms of disease on the retina and lens of the eye. It accomplishes this by sending a very small beam of light through the pupil of the eye. The pupil is the black “window” of the eye that allows light to pass through.

Babbage and Helmholtz

Charles Babbage(1792-1871), an English mathematician, was the first to create the ophthalmoscope, which was used in 1847. Babbage delivered the gadget to a physician for testing, but the item was quickly forgotten about and forgotten about again. German physician and scientist Hermann von Helmholtz (1821-1894) produced his own version of the ophthalmoscope four years after the invention of the first. Helmholtz was completely ignorant of Babbage’s invention. Helmholtz is frequently referred to as the only creator of the device since he had more success in making his idea recognized.

  1. The observer would be seeing through a very small opening (aperture) in the mirror.
  2. In order to create a more distinct inverted picture, the researcher attached a condenser lens, which was then magnified five times.
  3. It was routinely used for eye exams until the year 1920.
  4. The curvature of the eye controls whether the focal point of an object’s picture will be on the lens of the eye, in front of or beyond the lens, and how sharp the image will be.
  5. In addition, Helmholtz investigated color blindness as well as the speed of nerve impulse transmission.
  6. Another version of the ophthalmoscope was invented by Swedish ophthalmologist Allvar Gull-strand (1862-1930), who also investigated physiological optics and was a pioneer in the field of ophthalmology.

In addition, he developed a slit light, which when used with a microscope, allowed a physician to find foreign things in the eye.

The Modern Opthalmoscope

Hand-held ophthalmoscopes are now often used in clinical settings. It is equipped with a tiny battery-operated bulb that directs the beam of light through a mirrored prism to the desired location. The observer peers through a small hole in the prism to see what is going on. With a set of spinning lenses, the equipment amplifies the picture and allows it to be focused precisely. The lens required to focus the picture provides the doctor with an approximation of the prescription for the glasses lenses required to correct the patient’s eyesight.

Another, bigger form of ophthalmoscope, known as a binocular ophthalmoscope, is utilized in clinical research and is used to examine the retina.

oxfordviewsupdated 08th of June, 2018 ophthalmoscope/äf almskp; äp- / n.

DERIVATIVES:ophthalmoscopic/äf lmskäpik; äp- / adj.ophthalmoscopy/äf lmskäpik; äp- / n.ophthalmoscopy/äf lmskäpik; äp- / adj.ophthalmoscopy/äf Updated Oxford Views on the Oxford Pocket Dictionary of Current English (oxfordviews) 14th of May, 2018ophthalmoscope Hermann von Helmholtz devised an instrument for inspecting the inside of the eye in 1851, and it is still in use today.

— ophthalmoscopy (off-thal-mos -k-pi) n.A Dictionary of Nursing, ophthalmoscopy (off-thal-mos -k-pi) n.

Definition of OPHTHALMOSCOPE

Oph·​thal·​mo·​scope| äf-ˈthal-mə-ˌskōp,äp-

Definition ofophthalmoscope

:an device for examining the inside of the eye, particularly the retina, is defined as

Other Words fromophthalmoscope

Ophthalmoscopic (adjective)äf- thl- m- skä- pik,(adjective)äp- thl- m- skä- pik,(adjective)äp- thl- m- skä- pik,(adjective)äp- thl- m- skä- pik,(adjective)äp- thl- m-

Examples ofophthalmoscopein a Sentence

Recent Web-based illustrations In addition, the school presented him with a stethoscope and an ophthalmoscope as a token of appreciation for his generosity and vision in raising his gift. —The Salt Lake Tribune, published on June 9, 2021 The screening process for glaucoma often involves a doctor’s visit and the use of anophthalmoscope to examine the fundus, the interior lining of the eye, and assess the health of the patient’s retinal health. Citation: Nathan Percy, Orange County Register (February 10, 2017).

—Eric Schmidt, Newsweek, January 10, 2017 — As a result, researchers at the University of Warwick in Coventry, United Kingdom, spent three years inventing anophthalmoscope, which uses sophisticated technology to provide a high-quality digital image.

14 June 2017: Jeanne Kisacky writes for the Smithsonian magazine.

It is not the opinion of Merriam-Webster or its editors that the viewpoints stated in the examples are correct. Please provide comments. More information may be found here.

First Known Use ofophthalmoscope

In the sense stated above, this was around 1857.

History and Etymology forophthalmoscope

The term is derived from the French words ophthalmo-ophthalmo-scope-scope and afterophthalmoscopie, which means “examination of the eye.” A.-C. Maressal de Marsilly, in “Notice sur l’ophthalmoscope de MM. Follin et Nachet,” Annales d’oculistique, tome 28 (2nd semester 1852), pp. 76-86, is said to have coined the term “ophthalmoscope.” Marsilly used the term to refer to a device invented by Eugène Follin and produced by Jean-Alfred Nachet, which was a version of the original ophthalmoscope developed by Hermann von Helmholtz and introduced in 1895.

Refer to James G.

1634-68.

Learn More Aboutophthalmoscope

This entry should be cited as “Ophthalmoscope.” Merriam-Online Webster’s Dictionary, Merriam-Webster, accessed on 3 February 2022, Merriam-Webster. A list of other definitions forophthalmoscope oph·​thal·​mo·​scope|äf-ˈthal-mə-ˌskōp

Medical Definition ofophthalmoscope

A fundus camera is a device for viewing the interior of the eye that consists of a concave mirror with a hole in its center through which the observer examines the eye, a source of light that is reflected into the eye by the mirror, and lenses in the mirror that can be rotated into the opening in the mirror to neutralize the refracting power of the eye being examined and thus make the image of the fundus clear.

Other Phrases Associated with the Ophthalmoscope ophthalmoscopic- thal- m- skäp- ik adjectiveophthalmoscopically- i- k(- )l adverbophthalmoscopically- i- k(- )l adverbophthalmoscopically- i- k(- )l adverbophthalmoscopically- i- k(- )l adverbophthalmoscopically- i- k(

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