Is it necessary to get an eye exam even if I am satisfied with my ready made reading glasses?
Definitely. The use of readymade reading glasses is perfectly safe but does not replace the need for regular eye exams. There are many silent robbers of vision that if caught early can be easily treated or prevented. Glaucoma is a perfect example of an eye disease that is often asymptomatic and will remain undetected without regular eye exams.If there is no value under the cylinder heading, then you have a simple prescription. If there is a value under this heading, then you have astigmatism.
I want to get my eyes checked and order my eyeglasses, what is the next step?
Schedule an appointment at NeoVision Eye Center by calling toll free at 1-877-NEOVISION (1-).When the two eyes are not properly aligned and looking directly at the same thing, prism can be ground into the lenses in order to re-align them. This can occur with strabismus or in situations where the eyes are properly aligned but are under a tremendous amount of strain in order to keep them aligned.
Light rays pass through what part of a lens without being refracted?
Light rays passing through the optical center (OC) of a lens are not refracted. With proper PD measurements, your eyes are centered at the optical center of the lens. For taking your unique fitting measurements, your physical presence is absolutely necessary. We will need to pre-adjust the frame on your face before ordering your glasses.If there is no value under the cylinder heading, then you have a simple prescription. If there is a value under this heading, then you have astigmatism. Like sphere power, the cylinder power is also measured in diopters.Eyeglasses ordered under an insurance plan are usually processed by the insurance labs and we do not have much control over it. They usually take 5-10 business days. However, if you order your glasses privately (i.e.
Why do children need sunglasses?
Children are at a higher risk from the harmful effects of UV since they generally spend more time outside in the sun. Select sunglasses that suit your child’s active lifestyle. The lenses should be impact resistant i.e. made of polycarbonate.Your eyeglass prescription contains information regarding the lens power required to correct your vision problems. It consists of spherical power, cylindrical power, cylinder axis, bifocal addition, and prism power. Your prescription will contain only those numbers that are pertinent for your vision correction, for example if you do not have astigmatism, you would not have a cylindrical power and axis information in your prescription. Most prescriptions do not contain prism power.Light rays passing through the optical center (OC) of a lens are not refracted.
What is cylindrical power?
If there is no value under the cylinder heading, then you have a simple prescription. If there is a value under this heading, then you have astigmatism. Like sphere power, the cylinder power is also measured in diopters.Anisometropia is a condition where there is a significant difference in the refractive errors of the two eyes. If this condition is present in infancy and is undetected or untreated, it often results in the development of lazy eye or amblyopia in the weaker eye. The greater the amount of the difference, the more likely the development of lazy eye will be. A problem can occur when glasses are made for an anisometropic individual.
What is a diopter?
A diopter is a unit of measurement that is simply the inverse of the focal distance of the lens as measured in meters. For example, if a lens has strength of 2 diopters, then parallel light rays that pass through this lens will focus together at a distance of 1/2 meter (50 cm) away from the lens.Frames are identified by manufacturer / designer, model number or name, size, and color information. Size information contains the horizontal measurement of each lens in millimeters (i.e. 47) and bridge size (the distance between the lenses) i.e. 18. This information can help you in sizing a frame for your face.
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