Monthly Archives: May 2013

Refractive Errors

What is that ?

Myopia is when the eye is to big for the cornea and lens can make a clear picture on the retina. This will result in at you can’t see clear far a way or if you shall use minus 1.00 D glasses you can see clear up to 1m/3feet. Or the eye can be a normal size but the cornea and the lens are stronger than normal, and make the clear photo in the eye in stead of on the retina. To correct this we put glasses or contact lenses on with minus that make the photo to appear clear on retina. This refractive error usually becomes clear to the person right a way, children can’t see the chalkboard at school or they sit too close to the tv, or they complain about blurred vision

Hyperopia is when the eye is to small and cornea and the lens make clear photo behind the eye. Or the powers of the cornea and lens is to weak and the eye has normal size resulting in the clear photo to be behind the retina. To correct this we use plus lenses in glasses or contact lenses. This kind of refractive error is often named the forgotten refractive error because of the lens ability to correct the error. Children are able to make op to and over 20D plus with the lens in the eye so they can see clear at all distances, but the child with about 6 D plus uses much energy to read and can have slow reading ability or is reluctant to work in close range. Many have small plus , with less than 4D they can live with their refractive error until they hit 40. Then they start using reading glasses, this is the age when presbyopia comes to live and many become amazed about that fact that they need both reading and farsighted glasses. They have had perfect sight all their lives without glasses.

Presbyopia is when the lens in the eye can’t make enough plus to read close up, it hits both hyperopic and myopic people, but the hyperopic will use reading glasses sooner than same age myopic person because of the eye refractive error helps myopic people to read closed up, they just take the glasses of to read.

Astigmatism is a refractive error that is combined with myopic or hyperopic. The astigmatism comes out because the eye is not totally round, and to understand this difference is best to use rugby ball and soccer as examples, as the eye is like a soccer and has the same refractive error any where in the photo. But if you have an eye like a rugby ball you got one axe that has more powerful refractive error than the other so you get two photos, one closer to retina and one 90 degrees angel more far from the retina. This type needs 2 different powers in the single glass or contact lens to join the both photos to one clear photo on the retina. This is not pleasant to correct at the first time but gets better after the brain and eyes get used to the corrections and should be corrected if over 0,25D.

Face form VS Frames

I thought it would be nice to have few photos of frames that I find fitting to each face form
And as I work in the Specsavers group I use the frames from them as examples.

Round face form:

Photo 2013-05-16 08.12.54 f.m.

his titanium is good for the round face with the light and thin rectangular frame and a wider top than bottom which makes the face form less round. Colour is not black but dark blue that gives the frame visuality but doesn’t overpower the face.

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As a statement frame this is a good form for the round face, as the previous it has the same rectangular form that become narrower in the bottom. And the colour is light brown that doesn’t become to dominant but fits almost all colour skin types.

Oval face form:

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Oval is the face form that can take allmost all frames except round. This heavy top rectangular frame gives the face a strong masculin outcome.

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This square one changes the face form to more square and the colour again not dominant but visual.

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Here is a light metal frame that is rectangular and gives the face wideness instead of long oval form.

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The nylon stainless steel frame with the light bottom and the metal top gives wideness with out heaving the face with the frame.

Square face form:

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Titanium square frame that follow the wide jaw that is signature of the square face form.

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Round frame that put more softness over the more hard masculine face form.

Rectangular face form:

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This rectangular wide frame makes the face more wider and makes the long face more square.

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Here is a square frame that allows the face to keep its form, keeps harmony between face and frame.

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And this statement frame with black top and clear narrower bottom makes the face narrower.

Diamond face form:

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Sporty frame that helps to make the area around the eyes wide, so the diamond face form holds untouched.

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Round frame that puts more body in the face that typically is a thin face form.

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Classic rectangular frame with slightly narrower bottom that makes harmony with the face form.

To find these frames in the article you can visit the home page.

http://www.louisnielsen.dk/briller/herrebriller/#ct=ismale

Or for english version.

http://www.specsavers.co.uk/glasses/mens-glasses/#ct=ismale

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