Asking the optometrist for overcorrective lenses??
Question: I only really need my glasses for long-distance viewing, and otherwise take them off. However, I usually cannot see things that I want to see, even with glasses on. Could I get away with asking someone down the chain (optometrist, lens maker, etc) to slightly overcorrect my glasses? Or is there an easier way to get glasses that improve my long-distance vision?
Answers: It is not possible to overcorrect a pair of glasses in order to improve vision. Every person has their own maximum visual acuity -- the maximum clarity they are capable of seeing. Every person also has an optimum prescription that provides them the clearest vision possible -- this optimum prescription is what your doctor finds in your exam. So making the prescription stronger than your optimum prescription will not improve your vision clarity. It will only strain your eyes. If you are not capable of seeing as clearly as you would like it is due to one of two things. Either your eyes simply cannot see as clearly as some people's eyes see (not all people are capable of seeing the same degree of clarity) or, your doctor may not have found the best optimum prescription for you during the exam. I would go in and tell your doctor of your concerns and let him or her repeat the exam to make sure he or she has you seeing as clearly as is possible for your eyes.
Couple things could be happening:
1)You could an incorrect prescription
2) Your visual acuity may not a correctable to 20/20 which means there's nothing to do about it, your doctor will get you to the best he or she can get you to and that's it
3) You may have some unrealistic expectations. If you are upset because seeing things you want to see means you can read a newspaper from across the room or see exactly what your neighbor across the street is cooking (over-exagerating examples, i know) Then you just need to realize that people's eyes aren't as good as owl eyes and 20/20 is just what we are stuck with (in most cases)
However, over-correction is possible... but you really won't find a doctor to do it for you.
Myopes loves their minus. When someone is near-sighted or myopic then they typically want more than they need. For example if your prescription is actaully a -1.25 sph OU, you may actually like looking out of someone's -1.50 sph OU glasses. That is over-correction. And it's not actually your correct prescription and could lead to eye strain and headaches. But it is common in refractive surgery, especially for younger people. That's why alot of people after Lasik surgery get to be 20/15 or 20/10.
*** telescopes have multiple lenses, which allow us to see things so far away, it's not just one lens you are looking through.
You may need a change in prescription and you will need to have an eye exam for that. There is a limit to how well the human eye can see and if things are too small or too far away, even those with perfect vision cannot see them. Making glasses too strong will not make things easier to see if you are trying to see things beyond the human limit.
Human eyes can see things no smaller than about 1 inch high from about 20 ft away and no smaller than about 4 inches high from 200 ft away.
I would probably go in for another checkup. Maybe your eyes have worsened. It happens.
Answers: It is not possible to overcorrect a pair of glasses in order to improve vision. Every person has their own maximum visual acuity -- the maximum clarity they are capable of seeing. Every person also has an optimum prescription that provides them the clearest vision possible -- this optimum prescription is what your doctor finds in your exam. So making the prescription stronger than your optimum prescription will not improve your vision clarity. It will only strain your eyes. If you are not capable of seeing as clearly as you would like it is due to one of two things. Either your eyes simply cannot see as clearly as some people's eyes see (not all people are capable of seeing the same degree of clarity) or, your doctor may not have found the best optimum prescription for you during the exam. I would go in and tell your doctor of your concerns and let him or her repeat the exam to make sure he or she has you seeing as clearly as is possible for your eyes.
Couple things could be happening:
1)You could an incorrect prescription
2) Your visual acuity may not a correctable to 20/20 which means there's nothing to do about it, your doctor will get you to the best he or she can get you to and that's it
3) You may have some unrealistic expectations. If you are upset because seeing things you want to see means you can read a newspaper from across the room or see exactly what your neighbor across the street is cooking (over-exagerating examples, i know) Then you just need to realize that people's eyes aren't as good as owl eyes and 20/20 is just what we are stuck with (in most cases)
However, over-correction is possible... but you really won't find a doctor to do it for you.
Myopes loves their minus. When someone is near-sighted or myopic then they typically want more than they need. For example if your prescription is actaully a -1.25 sph OU, you may actually like looking out of someone's -1.50 sph OU glasses. That is over-correction. And it's not actually your correct prescription and could lead to eye strain and headaches. But it is common in refractive surgery, especially for younger people. That's why alot of people after Lasik surgery get to be 20/15 or 20/10.
*** telescopes have multiple lenses, which allow us to see things so far away, it's not just one lens you are looking through.
You may need a change in prescription and you will need to have an eye exam for that. There is a limit to how well the human eye can see and if things are too small or too far away, even those with perfect vision cannot see them. Making glasses too strong will not make things easier to see if you are trying to see things beyond the human limit.
Human eyes can see things no smaller than about 1 inch high from about 20 ft away and no smaller than about 4 inches high from 200 ft away.
I would probably go in for another checkup. Maybe your eyes have worsened. It happens.
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