When prescribing specs, your optometrist will strive to provide you the clearest possible sight at distance and up close. An autorefractor or retinoscope, phoropter, and trial frames will be used to grade the eyes.
As with eyeglasses Rx, your ophthalmologist should also give you the best possible vision with laser eye treatment.
However, your sight may not be as clear after procedure as with your eyeglasses.
Sometimes, the Rx that gives you the clearest sight may not be the appropriate one for you and there are a number of reasons why your optometrist may modify that.
You will experience wooziness, nausea, headaches, and anxiety from your Rx if your eyes have changed drastically compared to your last eye examination and spectacles. To correct your prescription, your optometrist may then lower it somewhere between your most recent and new prescription for comfort at the expense of clarity. You may need to change spectacles repeatedly because of this since this is just a temporary prescription to what you really should be using.
If your astigmatism changes in minor amounts compared to most recent eye exams, your optometrist may choose to not include this in your spectacle prescription. The modest discrepancies in astigmatism will not really make vision clearer but these changes can make glasses become inconvenient.
For near work eyeglasses, your optometrist should start optimizing your vision for a working distance of 40cm. This is known as the standard distance for reading. Eyeglasses used for computer work should also be altered fittingly by your optometrist to make sure that viewing the computer screen is more comfortable as well.
With laser eye treatment, your ophthalmologist should try to completely correct your vision by giving you the greatest clarity possible. An increasing prescription rather than changing your prescription to plano (no prescription) is the common cause of discomfort when using "new prescriptions" after having laser eye surgery.
Your peripheral vision will still be unhampered after having laser eye treatment. This is also the case if you have a high Rx or if you choose to wear smaller or thicker-temple frames. Your peripheral vision will be the same with wearing contact lenses.
You might think that your sight after having laser eye treatment would be better than when you were still wearing glasses.
Unfortunately, some individuals find their vision insufficient after laser eye procedure. Regrettably, even if a lot of successful patients can see 20/20 after the operation, this is not the situation for everyone.
Of those who do see 20/20, other optic factors can induce disappointments. Glares and night time haloes are regular occurences as the pupils expound in the shadows, enlarging past the surgical area with the peripheral of the flap causing the optical symptoms.
With presbyopia, for instance, near sight may not be entirely corrected with laser eye treatment which means that eyeglasses may still be required for reading after surgery. With advances in laser eye treatment techniques, such as presbylasik, this is becoming less of an issue.
Before proceeding with laser eye operation, you should have a discussion with your local ophthalmologist or optometrist. They should be able to offer you professional ideas about the expected outcomes based on the information they gathered from your eye exams. You should make an informed judgment as to whether laser eye treatment is suited for your or not based on the guidance of your eye care professionals.
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