How Do Eye Shapes Affect Vision?

Eye shapes play a crucial role in vision.

The eye works by focusing light as it passes through the cornea and the crystalline lens. The light travels through the vitreous humor, a clear gel filling the inside of the eye, and hits the retina at the back of the eye. If everything is functioning properly, the light is clearly focused on the retina, allowing rods and cones that pick up light to pass on a clear image to the optic nerve and then to the visual cortex of the brain. The way the cornea and lens focus light works on the assumption that the eye is a certain shape so that the distance from the lens to the retina is a certain length. When these shapes are off, it causes refractive errors like myopia, hyperopia, and astigmatism.

Myopia or Nearsightedness

Myopia, the most common vision problem across the world, is caused by abnormal eye shape. Generally myopic eyes are longer than normal—the distance from the cornea to the retina is greater than in a normal eye. This causes light to converge in focus too soon, before hitting the retina, so by the time it hits the retina it is blurry. Nearsighted patients can usually see close objects clearly but have poor distance vision.

Hyperopia or Farsightedness

Hyperopia is the opposite of myopia—the eye is too short. The point where light would converge in focus in the eye is behind the cornea, so the light does not have enough distance to travel. This prevents farsighted patients from clearly focusing on close objects.


While hyperopia and myopia are caused by overall eye shapes, astigmatism is caused by the shape of the cornea itself. Normal corneas are curved equally in all directions, like a section of the outside of a ball. Astigmatic corneas are curved irregularly, like the surface of a football. This prevents light in the eye from focusing at a single point and causes distorted vision.

LASIK and Eye Shapes

LASIK treats these problems not by reshaping the eye, but rather by reshaping the cornea to make up for the shape of the eye. For myopic eyes, the cornea is flattened, causing light to converge at the cornea instead of before it. LASIK for hyperopia does the opposite—the curvature of the cornea is increased to focus light closer. For astigmatism, the curve is simply evened out to provide clear focus.

The shape of your eyes determines how good your vision is naturally. Fortunately, LASIK can correct irregularly shaped eyes.

Call our Patient Care Lines: (+632) 7-368 5238 l (+63) 917 862 7454 l (+63) 921 217 0517 for inquiries, questions, and appointments or talk to our consultants via LiveChat at so we can address and answer them for you.

Powering Up with Bright Vision: Erika Miyata

Visual struggles for a person always on-the-go will certainly take its toll down the line.

After enduring the lows of having blurry vision for over a decade, Erika Miyata, a Filipino-Japanese Jill of all trades, decided she needed her best version and that’s only possible with a bright eyesight.

She finally decided it’s time for LASIK.

“Ever since bata ako, malabo mata ko and I was really using contact lens for a really long time. Sobrang hirap playing for varsity before and until I got to the point I started working already,” shared Erika, an Operations Manager.

“That’s why thankful ako I was able to have LASIK still kahit matagal ako nag-contact lens, nakaya pa rin with advanced technology. Everything’s much clearer and easier now!”

You can choose to start living your life with much ease by having LASIK, too!For inquiries, questions, and appointments, call our Patient Care Lines:

(+632) 7-368 5238
(+63) 917 862 7454
(+63) 921 217 0517

Talk to our Consultants via Livechat:


Winning Combination: LASIK + Sports

Sports can feel like a distant dream if you wear eyeglasses or contacts.

For team sports such as basketball, it is highly-recommended that you wear eye protection in addition to glasses or contacts, which often feel awkward and cumbersome. Individual sports such as running and tennis do not require protective eyewear, but over the distance of a marathon or the time of a long tennis match, your glasses can begin to feel like lead weights or your contacts can start to itch and burn.

Want a better alternative? Consider a new team: LASIK and sports.

Focus on what Counts

Glasses or contacts often seem to be only minor irritations, especially if you are just starting out in a sport. As time progresses, however, many athletes start to feel frustration at the need to always carry a pair of protective lenses or to make sure they don’t lose a contact right before a big game. Corrective lenses steal part of your focus; if you lose a contact or break your protective eyewear, you will not be as effective on the field. In effect, you will not be able to reach your full potential, despite your talent. Your glasses or contacts are holding you back.

Not to mention the cost associated with buying new prescription sunglasses and protective eyewear. Basketball, badminton, baseball, kayaking, mountain biking; all those sports could require two or three different pairs of glasses. The costs of requiring corrective lenses for around the house, in the gym, out in the sun and on the water can definitely add up.

Improved Performance

Athletes benefit from 20/20 vision–not to mention 20/10 vision, which some LASIK patients achieve after the procedure. From basketball players to divers, from football to table tennis, naturally clear vision helps them a lot. But not every naturally gifted athlete also has the benefit of naturally “normal” sight. As a result, LASIK and sports are starting to go hand in hand. Many athletes turn to laser vision correction from an expert like Shinagawa to improve their game. PBA stars June Mar Fajardo, Alex Cabagnot, and volleyball standouts Mika Reyes and Denise Lazaro are just a few of the professional athletes to have undergone the procedure with great results.

LASIK works by reshaping the outer layer of your eye, helping it focus light directly onto the back of your cornea. This will help bring your vision closer to the ideal of 20/20—in many cases even up to 20/10. Using the newest excimer laser technology available, Shinagawa surgeons are able to improve your vision in only around 10 minutes, and you’ll notice a dramatic difference the very next day. Within a matter of several weekls, you are ready to get back on the court, strap on your skates or pound the pavement. But remember, with or without LASIK, you should still wear eye protection with certain contact sports.

Don’t let glasses or contacts hold you back. LASIK and sports are a winning combination that can help you maximize performance.

Call our Patient Care Lines: (+632) 7-368 5238 l (+63) 917 862 7454 l (+63) 921 217 0517 for inquiries, questions, and appointments or talk to our consultants via LiveChat at so we can address and answer them for you.

John Sanchez: Ending 25 Year of Poor Vision

Enduring 25 years of poor vision is now joke. Just ask our patient John Sanchez.

Thankfully, the suffering stops there for him after he had LASIK to end his lengthy visual nightmare.

“After 25 years of having poor vision, and 18 years of wearing eyeglasses and contact lenses, I finally have a good vision! Shinagawa ULTRA LASIK experience was really amazing!” bared John.

Shinagawa made it happen for him!

“From 675 eye-grade to 20/10 real quick, this was a life-changing experience for me. I would like to thank Shinagawa for making it happen!”

He wants others to experience the LASIK effect, too!

“Worth the investment! I’m glad I chose Shinagawa! I will surely encourage others to have LASIK, too!”

Call our Patient Care Lines: (+632) 7-368 5238 l (+63) 917 862 7454 l (+63) 921 217 0517 for inquiries, questions, and appointments or talk to our consultants via LiveChat at so we can address and answer them for you.

Stopping the Agony: Tiff Cabudsan’s Freedom

The struggles have to end at some point for Tiffannie Cabudsan, 23.

She tells her heartfelt story.

Ever since I was a kid, I was struggling with poor vision. Every new semester in school, my mom had to request for the teacher to place me in the front seat so that I won’t have a hard time seeing the writings on the board. At the age of 12, I had my eyeglasses with an eye grade of 200/250, as far as I remember, and it kept on progressing until my eye grade was already at 500 by the time.

With three daughters studying in a private school, my parents had a tight budget, so I couldn’t change my glasses monthly to correct my eye grade.

My eye grade peaked at 800 on the right eye and 750 on the left with astigmatism.

Fortunately, I came across Shinagawa and I was able to get my eyes treated via LASIK in time before I go legally blind. Now, my vision is 20/20 and the world is in HD!

However, my LASIK journey was not smooth sailing at all. At first, my mom was fully against the idea. My mom had a misconception about LASIK that it’s dangerous, it will make you go blind, and it’s painful.

One day I casually mentioned to her that I’ll get a LASIK someday and she said that there were still other options to cure my poor vision which was the herbal remedy. Knowing her reaction about LASIK, a few days before my surgery, I talked to my sister to help me convince my mom to come along on the day of my surgery.

When I finally told her about it, she was shocked and at a loss for words, and even without her saying anything I know that she was fully opposed to it with a few statements mentioned by my sister “It’s for the best and the result is for a lifetime” and “to grab the opportunity as they don’t often come along” my mom accompanied me on the day of my surgery. Her initial reaction after the surgery was she was relieved and thankful for a successful surgery.

As for me, it feels surreal and I feel like a different person after LASIK!

-Tiff, 23 years old

Share your LASIK story with us, too!
For inquiries, questions, and appointments, call our Patient Care Lines:

(+632) 7-368 5238
(+63) 917 862 7454
(+63) 921 217 0517

Talk to our Consultants via Livechat: