We are independent & ad-supported. We may earn a commission for purchases made through our links.

Advertiser Disclosure

Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.

How We Make Money

We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently from our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is Aniseikonia?

Mary McMahon
Updated May 17, 2024
Our promise to you
WiseGeek is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At WiseGeek, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Aniseikonia is a vision problem where information about the size of objects in the visual field varies between eyes or along a plane of vision. People may also notice variations in shape. A simple test can be used to check for aniseikonia in patients, by showing patients an image and having them view it through both eyes and each eye separately to see if there are distortions in the size or shape between the eyes. This condition is treatable with corrective lenses.

Some people naturally have aniseikonia as a result of having radically different visual acuity in both eyes, or because of variations in the size and shape of the eyes themselves. In other cases, the condition may be induced by corrective lenses, especially when patients have different prescriptions and they are complex. The variation may be subtle, but it can cause problems for the patient because the difference in the visual field can cause a cascading series of visual errors.

People with aniseikonia often develop eye strain, dizziness, disorientation, and balance problems. They can have trouble with depth perception and manipulating objects in their environment. They may also have difficulty processing visual scenes, something that can be potentially hazardous while engaging in activities like driving or operating heavy machinery. When the difference in image size is very small, people may not realize what is going on until they are evaluated by a doctor.

Treatment for aniseikonia usually involves corrective lenses ground to address the problem and stabilize image size. For people with an existing prescription to correct refractive errors, these lenses need to be specially made to address the underlying vision problem and the aniseikonia. Surgical treatments are not yet available, but sometimes receiving surgery to correct refractive errors or replace the lens of the eye with an artificial lens can make it easier to treat the aniseikonia.

Diagnosis of this condition usually requires a workup by an ophthalmologist. The doctor will examine the eyes, run a series of vision tests to learn more about the patient's visual acuity, and interview the patient about any vision or health problems noted. This information can be pulled together to develop a diagnosis, determine how severe the problem is, and work on a treatment plan. Patients may benefit from visiting an aniseikonia clinic, where they get specialized care from vision professionals who focus on this condition and have access to the latest diagnostic equipment and treatment options.

WiseGeek is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Mary McMahon
By Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a WiseGeek researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Discussion Comments

Mary McMahon

Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a...

Learn more
WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.

WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.