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Medically reviewed by Christine L. Larsen, MD Astigmatism is a common eye condition that happens when the cornea, or lens of ...
Astigmatism (uh-STIG-muh-tiz-um) is a type of refractive error where one or more of the eye’s surfaces are not smooth and/or ...
Have you ever gone to the optometrist for an eye test and been told your eye was shaped like a football?Or perhaps you’ve noticed your vision is becoming increasingly blurry or hard to focus?You might ...
What causes astigmatism? The eye acts like a camera, capturing light through the front surface (the cornea) and focusing it onto the “film” at the back of the eye (retina).
Aceclidine is a cholinergic muscarinic agonist that causes contraction of the iris sphincter muscle, thereby creating a pinhole effect that extends focus depth to improve vision in presbyopia.
Thyroid level tests, including the TSH test, can determine if your thyroid is producing too much or too little thyroid hormone. Here’s what the results mean.
The way people engage with Google search engine result pages (SERPs) has changed significantly over the past decade, according to a recent report from Mediative. The report was based on data from an ...
Time to convert your snapshots, slides, and negatives to digital format? Get the job done quickly with the right photo scanner. Here are the top performers in our testing, based on our deep-dive ...
Using a VPN, or virtual private network, is one of the best ways to protect your online privacy. We review dozens every year, and these are the best VPNs we've tested.
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