Optometrist diagnostic equipment in the diagnosis and detecting of glaucoma

How often do you go for eye exams? You should make it a regular habit because eye care is very crucial. Glaucoma contributes to high cases of blindness in America. Some people are born with good eyesight then start experiencing a blurry vision later in life. If such as person assumes this for long, it could cause glaucoma or even a complete loss of sight.

Glaucoma is one of the eye disorders that damage the optic nerve in the eyes. It comes from the accumulation of old fluids within the eyes due to a poor drainage system to eliminate them. Doctors say that you can inherit this disease or even get it from an injury. Some people also develop glaucoma from constant migraines, high blood pressure or diabetes. Are you above 40 years old? This means that your eyes need more exams compared to a younger person.

A lot of fluids can build pressure on the front area of your eye due to the deterioration of the optic nerve. In normal circumstances, the aqueous humor which is a fluid like substance flows from the eyes in the form of a mesh-like channel. The blocking of this channel is what leads to the accumulation of liquids in the eyes causing glaucoma.

Optometrists know how to diagnose glaucoma by conducting a series of tests. Detecting glaucoma early enough can save your eyesight and reverse any complications. We will discuss some of the diagnostic equipment used by optometrists to diagnose glaucoma. First, let us look at some of the tests that an optometrist can perform on you during an eye exam.

Detecting of glaucoma tools and what they do.


The first thing an eye doctor does is measuring your eye pressure by determining the resistance of your air to the eye. They use a tonometer that can emit an air puff to show the pressure levels of your eye. A pen-like device gets into contact with your eyes to measure the pressure. Your cornea should be clear and shaped regularly for it to function accordingly. Tonometry is used in detecting glaucoma.

Pupil dilation

An optometrist can also dilate your pupils using special eye drops so that they can view the inside regions of your eyes to determine if everything is in order. They can also conduct a fundus examination to view the inner parts of your eye as they examine the optic nerve and the retina.

Visual field testing

You may also go through this testing that focuses on all the regions of your eyes. The test documents both central and side vision. As the patient, you are required to press a button every time you see a flash of light during the test.


An optometrist can also evaluate how thick your cornea is through using an instrument known as an ultrasonic wave. This can also assess your eye pressure. Sometimes thick corneas that are out of the norm portray IOP readings that are inaccurate. They can either be high or low. The doctor conducts this test by numbing your eye using an anesthetic drop then uses a probe to emit an ultrasound wave that is painless. The tip of the probe has to get into contact with your cornea for the doctor to measure its thickness.


Glaucoma comes in different types, and this test can diagnose the closed-angle type of glaucoma. A doctor can focus on the anterior chamber of your eye using a certain instrument to check if the iris is in the right position. The test can assess the drainage canal that forms between your iris and the cornea. This type of glaucoma is a serious condition that can cause vision loss thus the need for the doctor to test the drainage canal.

A doctor conducts Gonioscopy using a lens that contains a mirror to view the drainage angle which is found around the edges of the cornea. A doctor puts this lens in your eye after numbing the area using an anesthetic drop. The lens can easily inform the doctor if the angle is open or not.

What is the equipment used in detecting glaucoma?

Iridex cyclo g6 -Safe and effective equipment

Doctors use this laser treatment equipment during transscleral CPC. It is a procedure that comes with numerous benefits for the patient. The instrument does not cause any inflammation meaning you don’t have to worry about swollen eyes. There is also no side effects such as chronic hypotony or phthisis from using this machine. You may not experience any long-term side effects because the machine does not produce unnecessary heating.

Product description

Disposable probes

The machine has various probes that deliver energy. Professionals know how to diagnose glaucoma using the MP3 probe which can detect both moderate and mild elevated pressure. They also use the G-probe in the case of elevated eye pressure. They make use of the G-probe with high energy in severe glaucoma cases. The equipment allows doctors to choose the right energy settings for different treatment options. A doctor can, therefore, customize treatment according to a patient’s condition.

Micropulse technology

The instrument is equipped with this technology which ensures that tissues can cool down between laser pulses to prevent the damage of tissue. It, therefore, reduces the risks of treatment to give compelling clinical results. It helps in the treatment of eye diseases such as glaucoma. There is also the use of legacy laser mechanism that handles detachments and retinal tears. The laser also helps in minimizing intraocular pressure.

Effective procedure

The procedure using this equipment is effective and repeatable. The eye doctor can repeat the procedure if the initial treatment does not produce the desired results. They can modify the energy levels for repeat treatments using this equipment.

It also offers logistical flexibility since a doctor can perform the procedure from his office or even in an operation room. They can also do it alongside other procedures such as cataract surgery. It is cost-effective, does not include incisions and safe to use. The equipment is durable and offers attractive reimbursement for optometrists.

Wide Range of use

The machine can also be used widely on either a patient who has never gone through incisional surgery or one who has undergone it. Any patient with a high risk of glaucoma can try to get diagnosed using this equipment.

Key features

  • Numerous probes
  • Energy settings
  • Micropulse technology

Nidek rs-3000High-quality eye photography equipment

Get a machine which provides a comprehensive analysis of your retina that can help in detecting glaucoma. It is a photography device that captures accurate images in 3d thanks to its SLO based eye tracer. This can monitor eye movements and help you obtain quality scans that you can use to evaluate the condition of your patient’s eyes.

Product description

Optical Coherence Tomography sensitivity

This sensitivity allows you to acquire B scan images that are of high resolution though media opacities. You can choose from regular, fine or ultrafine OCT. This technique utilizes invisible light wavelengths to create detailed images from the back region of the eyes. Physicians, therefore, know how to diagnose glaucoma by using these images which provide them with the necessary information. They can monitor any changes in your eyes during treatment.

Tracing HD

You can get the average up to 120 images with the use of the Tracing HD on this equipment. The tracing HD can also display involuntary movement of the eyes so that you can obtain accurate images. This machine can also detect retinal pathology.

Wide area scan

It also provides you with a wide area scan four you to conduct glaucoma analysis using the normative database. It also gives you scans at high speed to save time and increase efficiency. A glaucoma patient does not have to wait for the results for long when an optometrist is using this equipment. High scanning speed also minimizes artifacts allowing the doctor to get high-quality images.

Key features

  • Image averaging: Up to 120 images
  • OCT selectivity: Fine, ultra-fine and regular
  • Internal fixation target: laser cross shape
  • Normative database: 9×9 mm

Humphrey field analyzer 3 –High-speed testing equipment

Every eye doctor should get this equipment that can streamline your workflow. The manufacturers equip it with the SIT mechanism that reduces testing time. It utilizes only one trial lens meaning the set-up time is also reduced.

Product description

It improves confidence

The field analyzer can easily review the eye position of a patent from different angels to help in detecting glaucoma. Its effectiveness boosts the confidence of a doctor with the test results. It also comes with a smart touch interface which simplifies operation. To use the interface, you only need to select the name of your patient and press the start section. The user interface is equipped with impressive color graphics. The interface also minimizes the steps that the doctor has to follow when conducting a test.

It is user-friendly

The instrument also has reIYE data that enables the doctor to detect any testing problems like droopy lids or eye misalignment on the trial lens holder. They can repeat the testing process in such cases to improve the accuracy of the test results. There is also a gaze tracker that helps a doctor ascertain the reliability of the results. The machine is fitted with a graphical user interface which gives the doctor a 180-degree view thus making it user-friendly.

Allows quick data transfer

You can transfer legacy data fast from HFA2 to HFA3. The machine, therefore, gives you peace of mind by allowing you to work smoothly as you record patient’s date with ease. It is also fast to reduce patient fatigue and increase their comfort as they undergo different tests.

Mixed GPA

It also allows the free mixing of SITA standard and SITA fast and makes it easy for a doctor to access a patient’s progression analysis which includes different SITA texts.

Liquid lens technology

The machine makes use of liquid pressure to deliver patients with refractive correction. You can load every patient’s refractive correction automatically from a previous test. The technology also makes the setup simple to save you time. It also uses a trial lens correction that is automated to minimize errors, and promote accuracy. The trial lens ensures that the patient has a clear view during testing.

Key features

  • Gaze tracker
  • ReIYE data
  • Trial lens correction
  • 180-degree view
  • Kinetic perimetry

Heidelberg hrt 3 –High-resolution 3d images machine

Heidelberg hrt 3 is a laser scanning system that can capture 3d images. Doctors are familiar with how to diagnose glaucoma thanks to this machine which allows one to analyze the images of the posterior region of the eyes. It conducts retinal topography and also monitors any topographical fluctuations to help in detecting glaucoma. It can also identify other pre-metric diseases thanks to its tracking mechanism.

Product description


This equipment offers many functions to optometrists. For instance, it can help you analyze the edema and slits of the macula as well as any imperfection on the nerve fibers. A doctor can describe the optic nerve head of a glaucoma patient with the help of this machine. You can also evaluate related anatomical features using the equipment.

Optic disc analysis

Though you may be an expert in the field, the optic disc analysis can outperform your interpretation and give you accurate test results. Optic disc analysis can detect glaucoma even in patients who don’t get early symptoms of the disease. It can recognize superior defects that later develop into glaucoma by focusing on the baseline readings alone. The machine also makes use of a micron resolution that provides an in-depth analysis of the corneal structure.

Key features

  • Selectable databases
  • Network ready
  • Asymmetry analysis

Tomey casia 2 –A user-friendly and fast machine

One of the most outstanding machines created to assist eye doctors to function effectively is the Tomey cassia 2. It fulfills the needs of a different specialist in the eye care treatment since it is fast and accurate. The measurement speed of this machine is unmatched in helping you right from analysis patients’ data to creating the final report.

Product description

Advanced technology

The technology used to make this machine facilitates deep imaging for you to get more information on the different regions of the cornea. It is highly sensitive to depth for it to capture images that may not be clear using other machines.

It allows you to conduct corneal shape analysis as you analyze different angles to check for any eye complications in a patient. Thanks to the advanced technology, you can run tests without necessarily using the measuring modes. It has a scanning depth of 13 mm and provides high-resolution images. The scanning speed is also high due to the use of advanced technology.


Doctors use this machine to test for different eye complications such as cataracts and glaucoma. The machine can support cataract surgery. It is therefore versatile in its function thus saving you costs of getting more than one machine to use for eye exams. Unlike other machines, this can capture the images of both the corneal shape and the lens.


A doctor can take measurements without bringing the machine in contact with the eye of the patient. It allows non-invasive testing which reduces the chances of getting an infection from close contact. This makes it safe to use among many patients.

Key features

  • Scan depth: 13mm
  • Scanning speed: 50.000 A-Scan/sec
  • Automated handling


Our eyes may appear similar, but they are very different. Color is not the only differentiating factor in eyes. The normal eye pressure is also different among individuals. Monitoring your eye pressure can help you detect any diseases such as glaucoma. This disease does not notify anyone of its presence. It comes without any obvious symptoms and keeps on progressing without the knowledge of a patient.

Detecting glaucoma through undergoing frequent eye examinations can be a lifesaver. An optometrist can help you assess the eye pressure and evaluate the optic nerve health. You should also have some basic information regarding the overall health of your parents because diseases such as glaucoma can be hereditary. Watch out for other health conditions such as hypertension and diabetes as you maintain a healthy lifestyle.

Statistics reveal that at least 2% of the American population has glaucoma. It mostly affects people above 35 years and those with other medical conditions. Some eye conditions may be hard to treat therefore call for a second view from an eye specialist. Get one that has one of the diagnostic equipment we have reviewed above to assure you of accurate results.

Eye screening is how to diagnose glaucoma early enough to prevent vision loss. You may not have vision symptoms at first, but this should not be an excuse to skip an eye exam. A dilated eye exam focuses at the back of your eyes to check for any subtle changes in your optic nerve. You should go for these tests once or twice a year. It is always better to be safe than sorry, right?

Soren Milano

Soren Milano

ophthalmic industry consultant at Ophthalmicmart
I am a consultant to the ophthalmic industry for more than 20 years. Writing this blog is my passion for the ophthalmic and Ophthalmic medical community.

Ophthalmicmart blog supports your practice by providing professional perspectives, educational editorials and articles relevant to the profitable advancement of Ophthalmic practice or your practice and will upgrade advice.
Soren Milano


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