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Diopter
The diopter is a term used in optics to measure the ability of a lens or mirror to bend light (one diopter is the displacement of one cm at a distance of one meter). Eyeglasses and mirrors are measured in this unit. It is not the snellen fraction (20/20 or others like that).
Dr. Richard Bensinger reviewed this
54 year experience in Ophthalmology
How long it usually lasts:
Related questions
A 31-year old asked:
How harmful for your health is -8.00 diopters of vision?
1 doctor answer • 1 doctor weighed in
A 28-year old asked:
After wearing colour contacts without diopter my vision is blurred when I don't wear them?
3 doctor answers • 10 doctors weighed in
A 24-year old asked:
What is the highest and the lowest diopter on a corrective lens?
3 doctor answers • 4 doctors weighed in
A 46-year old asked:
What diopter is legally blind?
2 doctor answers • 2 doctors weighed in
A 36-year old asked:
What is diopter in prescription lens?
1 doctor answer • 1 doctor weighed in
A 41-year old asked:
Can you guys tell me how big a deal is -0.5 diopters to mis-measure?
1 doctor answer • 1 doctor weighed in
A 43-year old asked:
Do diopters measure nearsightedness?
1 doctor answer • 2 doctors weighed in
A 29-year old asked:
What diopter goggles should I get if nearsighted?
1 doctor answer • 1 doctor weighed in
A 48-year old asked:
Diopters prescription of -17.00. Will surgery help improve my vision?
1 doctor answer • 1 doctor weighed in
A 43-year old asked:
How many per cent of high myopes (-10 diopters and more) suffer retinal detachments?
1 doctor answer • 4 doctors weighed in
A 21-year old male asked:
How can I identify whether I have axial or pseudo-myopia? Is pseudo-myopia is restricted upto some power(diopter)?
2 doctor answers • 3 doctors weighed in
A 40-year old female asked:
My 14 years old daughtrer has worsening of vision from -4 to 6 diopters. Is any way of surgery that can prevent her vision from this negative shift?
2 doctor answers • 3 doctors weighed in
A 44-year old asked:
How severe is -3 diopter astigmatism and -8 diopter myopia?
2 doctor answers • 2 doctors weighed in
A 30-year old asked:
At what diopter does the eye start to elongate?
1 doctor answer • 1 doctor weighed in
A 50-year old asked:
What to do if i'm having spects diopter (minus) -1.5; am i eligible for 40% disability certificate for low vision?
1 doctor answer • 1 doctor weighed in
A 32-year old asked:
What do you suggest if i'm having spects diopter (minus) -1.5; am i eligible for 40% disability certificate for low vision?
1 doctor answer • 1 doctor weighed in
A 51-year old asked:
Rapid onset cataracts. Age 51. Diopters went from minus 5 to minus 12 in less than a year. What are the potential causes? Yes surgery is treatment.
2 doctor answers • 8 doctors weighed in
A 28-year old male asked:
How to stop the progression of myopia? I'm 28 years old, male, office work, -7 diopters with astigmatism
1 doctor answer • 3 doctors weighed in
A 59-year old male asked:
Post-cataract surgery, monofocal IOLs set for -1 diopter focus. Is it normal to need almost twice that power to see street signs etc. at night only?
1 doctor answer • 1 doctor weighed in
A 29-year old male asked:
Does the length of the eyeball decrease with decrease in nearsightedness (myopic power in diopters)? If so, how does it affect the retina/vitreous?
1 doctor answer • 1 doctor weighed in
A 38-year old female asked about a female:
My 5.5 year old has astigmatism with 0.75 diopter in one eye and 1 diopter in the other eye. Does she need glasses now to correct or , as she grows, it will improve?
1 doctor answer • 1 doctor weighed in
A 32-year old asked:
Any risk in a myopic pregnant woman (-8 diopters) getting retinal detachment from pushing during delivery?
2 doctor answers • 3 doctors weighed in
A 35-year old asked:
What to do if I have -5.75 diopters in my right eye and -6.25 diopters in my left eye. Does this mean that I have profound low vision?
2 doctor answers • 2 doctors weighed in
A 33-year old female asked:
I'm 34 & have been wearing glasses since age 4-5 for nearsightedness. I'm currently -11.25 for left eye and-10.50 for the right. My right eye seems stable but left keeps going up a quarter diopter. Is there a chance it will ever stop. I'm scared?
1 doctor answer • 1 doctor weighed in
A 64-year old female asked:
Cataract surgery scheduled for right eye (first) -10.75 diopters then left -6. DR "might" patch left eye after right eye surgery. Patch best way?
1 doctor answer • 1 doctor weighed in
A 33-year old female asked:
I am high myopic (left eye is -11.25 and right eye -10.50).My left eye the last 2 years keeps going up a quarter diopter. My optometrist says so far everything looks great considering I have a high prescription.What are chances of blindness in future?
2 doctor answers • 2 doctors weighed in
A 34-year old asked:
Can you explain why my contact lens dioptry is higher than my glasses dioptry?
2 doctor answers • 3 doctors weighed in
A 34-year old female asked:
Am I dying?
2 doctor answers • 2 doctors weighed in
A 19-year old asked:
Am I dying?
2 doctor answers • 2 doctors weighed in
A 37-year old female asked:
Im a nurse?
1 doctor answer • 1 doctor weighed in
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