Refractive defects Myopia, hyperopia, and astigmatism 2

Refractive defects Myopia, hyperopia and astigmatism

By DR. FLORA HERNÁNDEZ

The human eye works similar to a camera. Thus, through a lens system (the cornea and the lens), it focuses the light coming from the objects on the retina (which would be equivalent to photographic film).

A refractive defect (or ametropia) is an ocular alteration that causes the image not to focus precisely on the retina, producing blurred vision that can usually be corrected by placing a lens in the light path. The variations in the eye’s length, the shape of the cornea, or the lens’s transparency can cause refractive errors.

Óptica del Sol, optometry and ophthalmology services

Types of refractive defects

Depending on where the light is focused inside the eye, we talk about:
Myopia: when light is focused before reaching the retina (because the eye is too long, or the cornea or lens is too powerful). Distant objects are blurry, although up close, it is usually good.
Farsightedness: the image is focused behind the retina. It usually manifests itself by poor near vision, although vision can be blurry both far and near in high
hyperopia. Young people can have good vision but associated with headaches or visual fatigue.

Astigmatism: in this case, more than one distance point is formed. Small degrees of astigmatism associated with myopia or hyperopia is widespread. In high astigmatism cases, the images may be elongated or slanted when corrected with glasses, and the use of contact lenses is necessary. Presbyopia or eyestrain is a natural condition that manifests itself after 40 years due to the loss of the lens’s elasticity and makes it difficult to focus on nearby objects.

Correction of refractive errors
Interposing a lens will bring the focus of light to the retina (glasses, contact lenses (soft or semi-rigid), or refractive surgery.)
To find out if you have any of these problems, do not hesitate to have an eye exam. At Ópticas del Sol, we can help you with the best option to correct your problem.

What to do, Where to eat and Where to stay…

South Pacific Costa Rica Beaches

Looking for business directories, maps or other printouts? We’ve got that too!

Dare to Discover and Enjoy…

Check out…

Need help planning your next trip to Costa Rica? We look forward to help you!

Email: [email protected]
Phone: +(506) 8946 7134 or +(506) 8914 1568
Skype: ballenatalestravel

Steve's Supermarket

Steve’s Supermarket

Steve´s Supermarket & Delicatessen, this beautiful and nicely presented convenience store will cover all your needs. All in one, there is an exquisite Deli department and a well-equipped supermarket.

Continue reading
Fundación SOMOS

SOMOS FOUNDATION: UNITING COMMUNITY STAKEHOLDERS

In 2019, SOMOS Foundation was founded by a group of local leaders to help formalize this sense of community responsibility. By connecting the dots between local needs, skills, and talents and various forms of regional, national, and international support, SOMOS has been able to help mitigate the economic impacts of the pandemic.

Continue reading
Beehive Restaurant

The Beehive Restaurant

Owner of Beehive Restaurant Michael Allen created a little paradise for his friends and customers. Locals love the place, amidst tropical vegetation with palm trees, bougainvilleas, and well-manicured landscaping.

Continue reading
And love passes through the stomach

“And love passes through the stomach”!

This quote, perhaps the initial one, can be found in a 1928 etiquette book “The Completed Adam”. It was written by tennis player, writer, and author Paula von Reznicek and her husband. In it, they mention: “And love passes through the stomach”! Wherever the quote comes from, we agree that love for Costa Rica runs through the stomach!

Continue reading
Posted in Discover South Pacific.