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Pars Plana Vitrectomy: Overview

Pars plana vitrectomy is an eye surgery used to treat a variety of problems that affect the back of the eye. Pars plana vitrectomy is a type of eye...

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What Is Ophthalmoscopy?

Ophthalmoscopy, also called fundoscopy or a fundoscopic exam, is an exam that studies the back of the eye to check for conditions such as glaucoma....

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When to Have a Gonioscopy Eye Exam

A gonioscopy is an eye exam performed to view the anterior chamber of the eye, often to detect glaucoma. Here’s what to expect before you go....

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Conditions Treated With Laser Photocoagulation

Laser photocoagulation is an outpatient procedure that seals or destroys leakage in the eye. Learn who is eligible and how to prepare for recovery....

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What Is Proctoscopy?

Proctoscopy, unlike colonoscopy, is used to diagnose problems only in the rectum and anus, including cancer. Learn what to expect, prep, side...

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What Is an Electroretinogram?

An electroretinogram can tell how the light-sensitive retina is functioning. Learn how to prepare and what to expect from the test. An...

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Signs That You May Need a Colonoscopy

What are the signs that you should have a colonoscopy? At what age should you schedule your first colonoscopy? Learn the answers here. A colonoscopy...

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What Are Visually Evoked Potentials?

Visually evoke potentials involve electrical signals of the body's visual system. Testing can help ensure that any optical nerve damage is found...

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Best At-Home Metabolism Tests

Looking for metabolic testing at home to check your hormones? We reviewed the best at-home metabolism tests based on cost, hormones tested, results...

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How Often Should You Get a Colonoscopy?

How often should you get a colonoscopy? People with ulcerative colitis and other forms of IBD may need to start screening earlier and screen more...

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Am I Malnourished? Quizzes and Diagnosis Criteria

Several conditions cause symptoms of malnourishment. Different tests/quizzes can help you identify nutrient deficiencies. Find quiz information here....

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Corneal Topography

Corneal topography is an important component of a contact lens examination which keeps track of changes within the cornea. Corneal topography is a...

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Visual Acuity Testing

Get info on how optometrists perform different acuity testing to test people's eyesight and what having 20/20 vision means. Visual acuity is a...

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Digital Retinal Imaging

There are differences between a routine vision screening and a comprehensive eye exam. Digital retinal imaging is an important part of an exam....

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Why Do Eye Doctors Charge More for Contact Lens Exams?

Eye doctors typically charge more for examinations if you are requesting contact lenses. Learn the different factors involved. If you recently had a...

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How a Visual Field Test Works

Learn how the visual field test is performed. Abnormal results could indicate glaucoma, optic nerve glioma, and more.   Have you ever been asked...

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Vision Correction

Learn the definition of vision correction, why some people need vision correction, and what exactly refractive error is in relation to vision...

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Pachymetry Test for Corneal Thickness

Learn about the Pachymetry test to measure corneal thickness and why it is important for eye doctors to measure. Pachymetry is a simple, painless...

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Signs of Higher-Order Aberrations

Higher order aberrations are visual obscurations that cause visual symptoms in some patients. Learn more about this condition. Aberrations are...

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Optomap Dilation-Free Eye Exam

Learn about a way to view the inside of the eye without the installation of dilating drops and why some doctors feel that it is the way of the...

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Optical Coherence Tomography

Learn about optical coherence tomography, or OCT, which is used during an eye examination to look at the back of the eye for any diseases. Optical...

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Digestive Health Exams and Procedures

When your doctor orders a digestive health exam like a colonoscopy, knowing what to expect can reduce any anxiety you have. Explore what you need to...

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Fecal Immunochemical Test to Detect Hidden Blood

A fecal immunochemical test (FIT) is used to screen the stool for blood that can not be seen with the naked eye, or occult blood. A fecal...

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What Is Sonography?

Sonography is a diagnostic medical test that uses high-frequency sound waves to bounce off of structures in the body and create an image. Sonography...

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What to Expect From a Fecal Transplant

For people with severe intestinal problems caused by bacteria, a fecal microbiata transplant (FMT) may help improve their condition dramatically. A...

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What Does 20-20 Vision Mean and How Is It Measured?

Eye doctors tend to throw around the term "20/20" quite a bit. Learn the true meaning of 20/20 vision, how it is measured, and more. Eye...

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How to Use an Enema Safely

Learn how to give yourself an enema. You may need one in preparation for a colonoscopy, surgery, giving birth, or for constipation or fecal...

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Gallery of Eye Examination Equipment

Your eye doctor will use several different pieces of equipment during your comprehensive eye exam. Learn more about the different tools used. If you...

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