Doctor insights on:
What Is The Highest And The Lowest Diopter On A Corrective Lens
Power designation: This is a term from optics indicating the light bending ability of the lens in question. The number is generated in the process of refraction in the ophthalmologists office, and then written on the prescription so the optical shop can make the lenses of the proper power. ...Read more
See explanation.: That is why they are called corrective lenses. The only other alternative is refractive surgery or contact lenses. ...Read more
I do not: Think such lenses are necessary.Get a more detailed answer ›
No: Glasses are designed to improve the focus of the eye and improve clarity. Sometimes patients who start wearing readers feel that their near focus becomes more difficult and to a certain extent this is true. But eventually, readers become essential whether glasses are used initially or not. ...Read moreSee 1 more doctor answer
Diet, Light, XRcise:
1) a well balanced diet is essential for optimal functioning of all parts of the body. If you are unable to eat certain necessary foods, speak with your family doctor about food supplements.
2) make sure you always have adequate lighting for reading, proper background room light when watching tv, and sun glasses for outdoor activities.
3) strengthen your ocular muscles by doing "push-ups", etc. ...Read more
Astigmatism might require corrective lenses or glasses. At what level of astigmatism would I need help?
When blurred: Astigmatism is very common -- almost everyone has a little bit. It simply means that the cornea is not perfectly round, but rather has one steeper and one flatter curvature (like the side of a football rather than a basketball). People with more than 0.75diopters of astigmatism usually notice that images are blurred without glasses or contacts. ...Read more
Soft or Gas Perm cls: Gas permeable contacts can alter the shape of the cornea resulting in blurred vision with glasses after they are removed (spectacle blur) this is best compensated by getting a glass rx for that shape so you can use your glasses in the evening. In this case, the longer you use your glasses, without contact use in between, the worse they will function. ...Read more
Not usually: A corrective lens is part of an overall strategy to deal with low vision. A low vision specialist can help with this. In many states, low vision services are free of charge through the department of the blind. ...Read more
Only cure is surgery: Not all cataracts require surgery. If best VA is worse than 20/40 or glare is affecting VA, most surgeons prefer to do surgery sooner but depends on pt's sx, pt's risk factors, pt's preferences; also, though no guarantees with any surgery, many patients are less dependent on glasses & even glasses free after surgery which helps many in decision process: eyedoc2020.blogspot. Com ...Read moreSee 2 more doctor answers
I have a corrective lens prescription for myopia. How do I derive the intermediate (computer) distance from a D.V. prescription?
Add a little plus: In most cases the prescription will be for distance indicating some degree of minus power. To adjust for computer screen distance, add +1.25 to this power and that usually works. Note however, that the pupillary distance (the space between each eye) is set for distance viewing (usually 57-63 mm) and needs to be adjusted closer for viewing of a video screen. ...Read more
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