Learning Resources in Gresham

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Learn About Your Eyes

We want our patients to feel informed about their eye care and health. So when you visit Gresham Optical for an appointment, we’re always available to answer your questions. You can also check out our learning resources to review eye knowledge basics.

For more in-depth information, we’d love to talk to you.

How the Eye Works

The parts of the eye all work together to help you see:

Step 1: Light enters the eye through the cornea, the dome-shaped clear surface of the eye.

Step 2: The iris (the colored part of the eye) adjusts the pupil (opening of the eye) in response to light, controlling how much light enters the eye.

Step 3: The lens focuses light inside the eye, working with the cornea to focus light directly onto the retina (tissue layer at the back of the eye).

Step 4: The retina detects light using photoreceptor cells, transforming properties like light intensity and color into electrical signals.

Step 5: The optic nerve transmits this visual information (as electrical signals) to the brain.

Step 6: The brain interprets visual information, becoming the images you see.

Refractive Errors

Refractive errors are the most common type of vision problem. The shape of the eye is essential to how light is focused inside it. When the eye is irregularly shaped, light is incorrectly refracted or reflected. Vision problems caused by refractive errors can be improved or corrected with treatment, including eyeglasses, contact lenses, and refractive surgeries.

Refractive errors include myopia, hyperopia, astigmatism, and presbyopia.


Myopia (nearsightedness) causes blurry distance vision. Light cannot reach the retina as the eye shape is too long (lengthwise) or the cornea is too steeply curved. 

Higher degrees of myopia can lead to severe eye problems, including cataracts, glaucoma, and retinal damage. Slowing eye growth in children with myopia management can help preserve their vision.

Hyperopia (farsightedness) is when the eye is too short (lengthwise) or the cornea has a too slight curvature. As a result, when light enters the eye, it’s focused behind the retina, resulting in blurry near vision.

Astigmatism can cause both blurry near and far vision. Instead of a smooth cornea or lens, the eye or lens has irregular or mismatched curves. Many people have some degree of astigmatism. After all, it’s rare to have a perfectly smooth, circular eye! Minor astigmatism may not impact your daily vision needs, whereas high astigmatism can significantly affect visual clarity.

Presbyopia causes declining near vision as the lens becomes less flexible due to aging. Symptoms become noticeable in a person’s mid-40s and stabilize by their late 60s.

Ask Us Your Questions

We’re passionate about eye care and encourage our patients to ask questions, whether you have general eye questions or concerns about your vision. Browse our blog for ocular topics, learn about eye diseases and conditions, or visit Gresham Optical to discuss your eye care.

Featured Services

Comprehensive Eye Exams

Your eye exam should be completely yours—tailored to your eyes and health needs. Enjoy thorough eye exams personalized for you and performed by our qualified optometrists.

Digital Eye Strain Mediation

Long hours in front of your computer or on your phone can put a strain on your eyes. Learn more about how our team can help mitigate the uncomfortable symptoms of digital eye strain.

Dry Eye Evaluations & Solutions

Red, irritated eyes can cause undue stress during your day. Our effective solutions help you see comfortably and clearly all day long. Discover how we can help with our dry eye therapies.

Contact Lens Exams, Fittings, & Brands

Enjoy the ease and clarity of contact lenses. Our contact lens exams assess the health of your eyes and the suitability of your contact lenses. Find out how you can enjoy frame-free vision.

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Come See Us in Gresham

Our doctors and staff are ready to welcome you to Gresham Optical. Our location is across from the Gresham Golf Course. Look for the red brick building on the corner of Northeast Division Street and Northeast Francis Avenue. There’s plenty of parking available, with a lot in front of the building. 

Hours Of Operation

  • Monday: 9:00 AM 6:00 PM
  • Tuesday: 9:00 AM 6:00 PM
  • Wednesday: 9:00 AM 6:00 PM
  • Thursday: 9:00 AM 6:00 PM
  • Friday: 9:00 AM 6:00 PM
  • Saturday: 9:00 AM 1:00 PM
  • Sunday: Closed

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