Glaucoma is a disease that can remains unnoticeable until a person starts losing vision. Even the person who might seem to have a perfect vision might have glaucoma. The reason why it is not easily detectable is that its symptoms are not noticeable. The doctors recommend that a person get annual eye check ups to find anything unnoticeable before any damage is done.
Doctors consider several factors while diagnosing this disease, such as family history, optic nerve status, corneal thickness, etc. And after all that, they need to perform some tests to make sure that you have glaucoma.
Here we have brought you a list of all the tests performed to diagnose glaucoma.
There are a couple of various types of tonometry, which is a test to quantify eye pressure. In any standard eye test, your eye care physician will test eye pressure and do a test to take a gander at the optic nerve. That is on the grounds that raised eye pressure is the thing that generally tips eye specialists off to possible glaucoma.
The most exact approach to quantify eye pressure is after getting desensitizing eye drops, and your primary care physician will have you place your head on the cut light and gaze directly ahead. In contrast, the specialist moves the tip of the gadget to contact your cornea. The gadget will gauge how much power is needed to straighten the cornea, delivering a reading.
The subsequent technique is basically the same as the first. However, it utilizes a handheld pencil-formed gadget to quantify the pressing factor rather than the connection on the cut light. The third technique, known as the air puff, utilizes a light emission and a genuine puff to check how much pneumatic stress is needed to level the cornea. The air puff is the most awkward of the three since the eye is generally not desensitized. On the off chance that your eye pressure is high from any of these tests, your primary care physician will then, at that point, accomplish more explicit tests to analyze glaucoma.
Ophthalmoscopy is one of the tests conducted normally during eye examinations. This test allows your primary care physician to see the rear of your eye and ensure veins, retina, and optic nerve function normally. There are a couple of kinds of ophthalmoscopy tests, some of which require eye drops to widen your eyes, which implies your pupil dilates so your primary care physician can improve the look inside your eye. Then, at that point, contingent upon the technique, your PCP will utilize a type of light shaft and hold a focal point up to your eye to get a look. You might have to lean your head against a cut light, or your PCP might wear a light on their head and hold the focal point up with their hands.
This test is utilized to check if the eye’s drainage angle is open or shut. This close gander at the drainage framework in the eye can give your primary care physician a standing into what sort of glaucoma is affecting everything. In case you’re in danger for acute angle-closure glaucoma, an unexpected and serious expansion in eye pressure that warrants prompt clinical consideration. Gonioscopy also allows your primary care physician to check for strange veins, attachments, harm from past eye injury, and other complexities or irregularities in the drainage system, as per the Glaucoma Research Foundation.
Before a gonioscopy, your PCP will give you eye drops to numb the eye and afterward place a unique contact lens directly on the highest point of the eye. They will then, at that point, position your head in the cut light so a light bar will arrive at the special lens and make the point noticeable to your PCP. This test is fast and simple. It shouldn’t take more than a couple of moments to do.
Pachymetry estimates the thickness of the cornea, which is the peripheral piece of the front of the eye that covers the pupil and iris. Corneal thickness can likewise affect eye pressure tests—if the cornea is truly thick, it can give a bogus high pressing reading; in case it’s thin, you might get a bogus low pressing reading.
Pachymetry is finished utilizing a pachymeter, a little handheld test. Your PCP will give you eye drops to numb the eye first and afterward place the gadget on the front of the eye (the cornea) to quantify its thickness. The test is high-speed. It requires a moment or less to quantify the two eyes, and you shouldn’t feel a thing.
Visual Field Testing
Otherwise called perimetry, a visual field test is done to survey whether you’ve lost peripheral vision. Peripheral vision is typically the main thing to break down if you have glaucoma. During the test, you’ll place your head in a vault-formed gadget and gaze directly ahead at an objective while light pops up various regions all through your field of vision. You’ll click a catch at whatever point you see the light, which makes a difference in “map” your peripheral vision.
As per the Glaucoma Research Foundation, it’s entirely expected to encounter a deferral in considering them as it moves around your blind spot. Along these lines, if you experience this during the test, do not worry.
If you are diagnosed with glaucoma, you’ll probably need to do a visual field test one to two times each year to check for vision changes.
Optic Nerve Scanning
There are a couple of various advancements used to check the optic nerve and take complex pictures. In any case, ophthalmologists talk about OCT, which represents Optical Coherence Tomography, as the most exceptional technique we have at this moment. It can give your eye specialist exact estimations of the nerve’s shape and volume and uncover any diminishing regions. Finding even the littlest measure of harm almost immediately allows you an opportunity to treat glaucoma before it advances and results in any vision misfortune. Eye specialists acclaim this innovation for making it conceivable to distinguish changes sooner than at any other time.
On the off chance that your optic nerve looks strange, your PCP might need to do normal nerve examines at regular intervals or a year to check in case things are advancing or remaining stable.
The test is fast and effortless and expects you to put your face against a machine so it can snap a photo of your eye.