<div class="_help_font_site selected-art-author"> <div> <p>1. Myopia</p> <div>Myopia, or nearsightedness, is the most common refractive error of the eye. If you are nearsighted, you typically will have difficulty in seeing distant objects clearly but will be able to see well for close-up tasks such as reading and computer use. If there is a minus in your SPH, it means you have myopia (nearsightedness).</div> <div>Rx:</div> <div><img alt="" src="https://df5apg8r0m634.cloudfront.net/images/2019/1205/koSxiQBNMm.png" style="height:199px; width:595px" /></div> <div> <p>2.&nbsp;Hyperopia</p> </div> <div>Hyperopia, or farsightedness, is a common vision problem, affecting about a quarter of the population. People with hyperopia need correction&nbsp;focusing on objects that are both up close and far, and often feel eyestrain. The condition is sometimes referred to as &quot;hypermetropia&quot; rather than hyperopia. If there is a plus in your SPH, it means you have hyperopia&nbsp;(farsightedness).</div> Rx:</div> <div> <div> <div> <p><img alt="" src="https://df5apg8r0m634.cloudfront.net/images/2019/1205/VtcLleoeUC.png" /></p> <p>3. Presbyopia&nbsp;</p> </div> <div>Presbyopia is when your eyes gradually lose the ability to see things clearly up close. It is a normal part of aging. In fact, the word &quot;presbyopia&quot; means &quot;old eye&quot; in Greek. You may start to notice presbyopia shortly after age 40. You will probably find that you hold reading materials farther away in order to see them clearly.</div> </div> <div>Rx:</div> <div><img alt="" src="https://df5apg8r0m634.cloudfront.net/images/2019/1205/MJEJJ9MRPh.png" /></div> <div> <p>4.&nbsp;Astigmatism</p> </div> <div>Astigmatism is a common vision problem caused by irregularities in the shape of the cornea. With astigmatism, the lens of the eye or the cornea, which is the front surface of the eye, has an irregular curve. This can change the way light passes, or refracts, to your retina. This causes blurry, fuzzy, or distorted vision.</div> &nbsp; <div> <p>5.&nbsp;ADD (Addition)</p> </div> <div> <p>The Add, short for Reading Addition, is the additional correction required for reading.&nbsp;It can be used to make either reading glasses, bifocal glasses or multifocal glasses.&nbsp;</p> <p>The &#39;addition&#39; is only required if the glasses are going to be used for reading or close work. If your glasses are for distance only, this will not be an issue.&nbsp;Please&nbsp;kindly note that if you have ADD and choose distance glasses,&nbsp;the glasses can only be used for seeing far, not available for reading.&nbsp;Sometimes opticians use the word &#39;Add&#39; or &#39;Near&#39; instead of &#39;addition&#39;. They may only write it once, but it normally applies to both eyes and is almost always the same value for both eyes (e.g. &#39;Add&#39; +2.50 - should be entered for both eyes).</p> </div> <div>Age&nbsp; &nbsp; &nbsp; &nbsp; Add Power<br /> 35-39&nbsp; &nbsp; &nbsp;Plano<br /> 40-44&nbsp; &nbsp; &nbsp;+1.00<br /> 45-49&nbsp; &nbsp; &nbsp;+1.50<br /> 50-54&nbsp; &nbsp; &nbsp;+2.00<br /> 55-59&nbsp; &nbsp; &nbsp;+2.50<br /> 60-64&nbsp; &nbsp; &nbsp;+3.00</div> &nbsp; <div> <p>6. SPH(Sphere/Spherical)</p> </div> <div>This indicates the amount of lens power needed to correct nearsightedness or farsightedness. If the number has a minus sign (&ndash;), you are nearsighted. If the number has a plus sign (+) or is not preceded by a plus sign or a minus sign, you are farsighted. &nbsp;The larger the number following&nbsp;the +/-, the stronger the prescription.</div> <div> <p>7. CYL(Cylinder/Cylindrical)</p> </div> <div>This indicates the amount of lens power needed to correct astigmatism. This number also can also be preceded by &quot;+&quot;&nbsp;or &quot;-&quot;&nbsp;sign. If &quot;DS&quot; or &quot;SPH&quot; or &quot;spherical&quot; or &quot;PL&quot; is stated at the place of CYL, it means you have no astigmatism.&nbsp;&nbsp;</div> <div> <p>8. Axis</p> </div> <div>This number&nbsp;indicates the orientation of astigmatism and is measured in degrees. It will be between 1 and 180. If an eyeglass prescription includes cylinder power, it must also include an axis value, which follows the cylinder power.</div> &nbsp; <div> <p>9.&nbsp;OD. OS .OU</p> </div> <div>&quot;OD&quot; and OS&quot; are abbreviations for oculus dexter and oculus sinister, which are Latin terms for the right eye and the left eye.</div> <div>Your eyeglass prescription also may have a column labeled &quot;OU.&quot; This is the abbreviation for the Latin term oculus uterque, which means &quot;both eyes.&quot;</div> <div>Some doctors and clinics have opted to modernize their prescriptions and use RE (right eye) and LE (left eye) instead of OD and OS.</div> <div>On your eyeglasses prescription, the information for your right eye (OD) comes before the information for your left eye (OS).&nbsp;</div> &nbsp; <div> <p>10.&nbsp;Prism</p> </div> <div> <p>Prism refers to the prismatic power used to correct vision displacement. It helps to correct some special conditions or eye disorders (like a squint) that require the focused image to move position. The measurement is Prism Dioptre. The value may be as high as 10 and may go up in steps of &frac12; or 1 Prism Dioptre&#39;s.</p> <p>Prism powers will always be accompanied with a direction which is usually seen as a base direction such as IN, OUT, UP and DOWN. For example, Prism 2.00 Base IN. Some people may have a prism with two directions for one eye, for example; Prism 2.00 Base IN &amp; 1.00 Base UP.&nbsp;</p> <p>Please note, we can only make single vision glasses for prism prescription. If you have a prism, please upload your original prescription picture when you order.&nbsp;</p> </div> </div> </div>
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