How To Read Your Eyeglass Prescription?

How To Read Your Eyeglass Prescription?

If you just had an eye examination and if your ophthalmologist has suggested that you should wear eyeglasses, just because you have farsightedness, nearsightedness or astigmatism and if a prescription is given for the same, you will be confused with it for sure, if this is your first eyeglass prescription. You might be wondering what are those numbers in the prescription denote and you might also be confused with the abbreviations given in the prescription like CYL, SPH, OS and OD. When you are aware of these terms, you can talk with confidence and knowledge when you visit a store to place order for your eyeglasses.

OD and OS – what are they?

These two are short forms for Oculus Dexter and Oculus sinister and these are nothing, but Latin terms used for denoting the right and the left eye respectively. You will also find something called as ‘OU’ in your prescription, which means oculus uterque and this is a term used for denoting both eyes.

Even though, these short forms are used traditionally by ophthalmologists in their prescription, many clinics and doctors’ these days specify just as right and left eye for the benefit of their patients as against OD and OS. In general, in prescriptions, the details about the power in right eye will come next to left eye. Prescriptions are written by eye doctors in this way because they see the right eye of the patients first and then come to the second eye.

Other terms:

Even the prescription will have other terms like SPH and CYL as well. Here are some details about these terms:

SPH:

This is a term expanded as sphere and it is something that identifies, the level of the power of lens and it is measured in the Diopters or D scale. This remedy is suggested for nearsightedness and farsightedness. If SPH has a negative sign, it denotes nearsightedness.

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If you just had an eye examination and if your ophthalmologist has suggested that you should wear eyeglasses, just because you have farsightedness, nearsightedness or astigmatism and if a prescription is given for the same, you will be confused with it for sure, if this is your first eyeglass prescription. You might be wondering what are those numbers in the prescription denote and you might also be confused with the abbreviations given in the prescription like CYL, SPH, OS and OD. When you are aware of these terms, you can talk with confidence and knowledge when you visit a store to place order for your eyeglasses.

This is a term expanded as sphere and it is something that identifies, the level of the power of lens and it is measured in the Diopters or D scale. This remedy is suggested for nearsightedness and farsightedness. If SPH has a negative sign, it denotes nearsightedness. On the other hand, if it is not preceded by a plus sign or a minus sign, it is an indication of farsightedness. The term ‘SPH’ means the correction of near or far sightedness and it is equal to all meridians of the eyes.

CYL:

This is nothing, but a short form of cylinder and it identifies the level of strength power for astigmatism. If nothing is specified in the column, it means that either you do not have astigmatism or it means that the astigmatism is very slight, such that it is not necessary to correct it with the help of lenses.

The ophthalmologist will also by superimposing a protractor scale for identifying meridians on the eyes. The 900 meridian is the vertical meridian of the eye and 1800 meridian in the horizontal one.

The cylinder column will have numbers that might be preceded with a minus sign, which is prescribed for correction of nearsighted astigmatism or play sign for farsighted astigmatism. In a prescription for eyeglass, the cylinder power will follow the sphere power.

Axis, add and prism are other terms that can be found in a prescription given by your ophthalmologist.

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Comments

0 # Nishith 2019-08-10
Hii, I am from Khunti, I want to know can cigerrete sharing can lead to syphilis ?
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0 # Dr. Pooja 2019-08-11
yes,sharing cigerette,drinking cups,common spoons etc can also lead to syphilis, Generally whenever the fluid of a person who has syphilis is shared,the infection can occur, you should also consult with good Gynecologist in Khunti
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0 # Aayush 2019-08-06
Hii, plz tell me,Which tests can confirm syphilis in primary stage, also suggest name of good maternity hospitals in Gandhinagar ?
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0 # Dr. Naresh 2019-08-07 Reply | Reply with quote | Quote
0 # Harikiran 2019-07-24
Hello, plz let me know Can gonorrhoea be transmitted to small children, should I consult with good maternity doctor in Rayagada
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0 # Dr. Pooja 2019-07-25
yes,this can be transmitted by infected mothers to children, In this case it is called as ophthalmia neonatorum, find list of good doctor-.Obstetrician in Rayagada
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0 # Aarush 2019-07-20
Hii, can you plz tell me,What changes can occur in skin in syphilis patient, also suggest good obstertrician in Vellore ?
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0 # Dr. Naresh 2019-07-21
Rashes can occur on the skin in the near areas,rashes can be discrete and also symmetrical in nature, Rashes can also be pustular, you can consult with Obstetrician in Vellore.
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0 # Rohan 2019-06-15
Hello, I am from Namsai, PLz suggest some biochemic remedies for gonorrhoea .
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0 # Dr. Pooja 2019-06-16
Kali Mur, Natrum Mur, Natrum Sulph, and silicea are few important biochemic emedies in homoeopathy which can be used safely in this case, you can also take advise from gynecologist given here-Gynecologist in Namsai.
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0 # Vivaan Older than three months
Hii, can you plz tell me,What changes can occur in skin in syphilis patient, also suggest good obstertrician in Navi Mumbai ?
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0 # Dr. Naresh Older than three months
Rashes can occur on the skin in the near areas,rashes can be discrete and also symmetrical in nature, Rashes can also be pustular, you can consult with Obstetrician in Navi Mumbai.
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0 # Tushar Older than three months
My friend has been diagnosed with gonorrhoea, Please tell which tests will be advisable, also suggest gynec in Hooghly ?
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0 # Dr. Pooja Older than three months
VDRL tests should be done every month for 3 consecutive months for detecting syphilis as well as other sexually transmitted diseases,These tests should be conducted at proper times, find good Gynecologist in Hooghly
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0 # Rohan Older than three months
Hii, can you plz tell me,What changes can occur in skin in syphilis patient, also suggest good obstertrician in Akola ?
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0 # Dr. Pooja Older than three months
Rashes can occur on the skin in the near areas,rashes can be discrete and also symmetrical in nature, Rashes can also be pustular, you can consult with Obstetrician in Akola.
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0 # Priyansh Older than three months
Hello I am from Visakhapatnam, My neighbour has been feeling redness and burning in urethral organs, can it be a disease, should she visit gynec?
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0 # Dr. Pooja Older than three months
It can be a simple infection also and a disease also, If after the examination, the presence of gram negative bacteria is seen ,gonorrhoea infection can be thought of, she should visit good women's specialist- find list of Gynecologist in Visakhapatnam
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0 # Aarav Older than three months
Hii, can you plz tell me,What changes can occur in skin in syphilis patient, also suggest good obstertrician in Jorhat ?
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0 # Dr. Naresh Older than three months
Rashes can occur on the skin in the near areas,rashes can be discrete and also symmetrical in nature, Rashes can also be pustular, you can consult with Obstetrician in Jorhat.
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