Spectacle Prescription Format in India: Sample and How to Read It

A clear spectacle prescription format helps an eye clinic avoid one of the most common practical problems after refraction: the patient or optical dispenser cannot confidently read or interpret the prescription.

Whether you are writing a first spectacle prescription for a child, prescribing progressives for an adult, or sending an Rx to an optical shop over WhatsApp, the same principle applies: the important values should be structured, legible and easy to verify.

The same document is also called an eye prescription, glasses prescription or optical prescription. This guide explains the spectacle prescription format in India, including RE/LE or OD/OS, SPH, CYL, AXIS, ADD and PD, and shows a practical spectacle prescription sample for an eye OPD.

Important: This is an educational guide for prescription formatting and clinic workflows. It is not a substitute for clinical judgment, local professional requirements or legal advice.

Quick answer: what should a spectacle prescription contain?#

For most practical spectacle-prescription workflows, the reader should be able to identify:

• Right and left eye: RE/LE or OD/OS
• SPH: spherical power
• CYL and AXIS: cylindrical correction and its orientation, when prescribed
• ADD: near addition, when prescribed
• PD: pupillary distance, when measured and needed for dispensing
• Patient and date details
• Prescriber and registration details, as applicable
• Signature or appropriate digital sign-off

The exact visual design can vary. The goal is a prescription that is clinically clear, easy for the patient to understand, and practical for optical dispensing.

Spectacle prescription format: what should be on the Rx?#

A spectacle prescription is easier to dispense when the information is presented as a table rather than buried in free text.

A practical eye prescription format in India can include:

The exact layout can vary between clinics. What matters is that the information needed for clinical documentation and dispensing is clear and consistently positioned.

Indian optometry teaching material commonly presents spectacle prescriptions using separate right- and left-eye rows with SPH, CYL and AXIS, along with distance and near information.

Spectacle prescription sample#

A simple spectacle prescription sample can look like this:

PD: 62 mm
Distance VA: recorded by the clinician
Near VA: recorded when applicable

This is only a format example, not a prescription for a real patient. The actual values must come from the patient's examination and refraction.

The important formatting principle is that the optical shop should be able to tell immediately which values belong to which eye and whether the values are for distance, near or an addition.

RE/LE or OD/OS: which should you use?#

You may see either:

• RE / LE — Right Eye / Left Eye
• OD / OS — Oculus Dexter / Oculus Sinister

Both conventions are widely understood. Indian optometry materials use OD/OS in spectacle prescription tables, while patient-facing resources also explain the same right-eye/left-eye distinction in simpler terminology.

For a clinic workflow:

• Choose one pair of labels and use it consistently.
• Keep the right eye and left eye on clearly separate rows.
• Do not mix RE with OS on the same prescription.
• Keep the order consistent across printed, PDF and WhatsApp copies.

Consistency matters more than choosing one particular abbreviation.

How to read a spectacle prescription#

To read a spectacle prescription, go through the fields in this order:

1. Find the eye: RE/OD is the right eye; LE/OS is the left eye.
2. Read SPH: this is the spherical lens power and includes its plus or minus sign.
3. Read CYL: this records cylindrical power when astigmatism correction is prescribed.
4. Read AXIS: this gives the orientation of the cylinder from 1 to 180 degrees.
5. Check ADD: this is a separate near addition when prescribed.
6. Check PD: this is the pupillary-distance measurement when it has been recorded for dispensing.
7. Check the date and prescriber details: these help identify the prescription and its source.

Do not interpret a prescription by looking at one number in isolation. The eye label, sign, field name and any associated value all matter.

SPH, CYL and AXIS meaning#

In short:

• SPH (Sphere): the spherical lens power.
• CYL (Cylinder): the cylindrical power used when correcting astigmatism.
• AXIS: the orientation of the cylindrical correction, expressed as a whole number from 1 to 180 degrees.

Educational optometry resources describe SPH as the lens power for spherical correction, CYL as the amount of cylindrical correction, and AXIS as the orientation of that cylinder.

How to write SPH#

Include the sign and the power clearly, for example:

• -2.00 D
• +1.50 D

Sphere power is expressed in diopters and is commonly written in quarter-diopter increments.

Avoid writing a value such as 2.00 without its sign when the sign is clinically relevant. A printed prescription should remove ambiguity rather than make the dispenser interpret handwriting.

How to write CYL and AXIS#

If a cylinder is prescribed, record its corresponding axis.

For example:

-1.00 CYL × 90°

The axis is an orientation, not an additional lens-power value. It is recorded as a whole number from 1 to 180 degrees.

If there is no cylindrical correction, a clinic may use a convention such as SPH, DS or Plano, depending on its prescription format. The key is to make the field unambiguous.

Plus-cylinder and minus-cylinder notation#

Spectacle prescriptions can be written in plus-cylinder or minus-cylinder form. Both describe the same correction, but converting (transposing) between them is a common source of error, so state which convention the prescription uses and avoid converting it again at the optical shop.

If your clinic or optical laboratory uses a specific cylinder convention, standardise the output so the same prescription is not interpreted differently at different stages.

Near addition (ADD) on a spectacle prescription#

ADD, or near addition, is extra plus power prescribed for near vision when clinically indicated.

It is particularly relevant when the patient needs a near correction in addition to the distance prescription, such as with presbyopia.

A prescription might therefore show:

The ADD should be clearly separated from the distance SPH/CYL/AXIS values so the optical dispenser does not confuse the near addition with the main distance power.

When recommending a lens design, the prescription workflow can also record whether the patient is being fitted for a single-vision near lens, bifocal or progressive lens. Frame selection and measurements such as fitting height are handled as part of dispensing.

Pupillary distance (PD) in a spectacle prescription#

PD, or pupillary distance, describes the distance between the pupil centres for dispensing and lens centration.

Depending on the dispensing workflow, PD may be recorded as:

• Binocular PD — one measurement for both eyes.
• Monocular PD — a separate measurement for each eye.

For some patients and lens designs, especially where accurate centration is important, monocular measurements can be useful.

The most important rule is simple: do not invent a PD. Record it when it has actually been measured and when it is relevant to the dispensing process.

If a patient is ordering glasses from an optical shop using a digital copy of the prescription, a clearly displayed PD can reduce follow-up questions.

Distance and near prescription: make the difference obvious#

One common source of confusion is failing to distinguish distance correction from near correction.

You can structure the prescription in either of these ways, depending on your clinic workflow:

Option 1: Distance + ADD#

Option 2: Separate distance and near prescriptions#

This is the same prescription as Option 1 written out in full. The near sphere is the distance sphere plus the ADD, and the cylinder and axis carry over unchanged. A near column that shows only "+1.50" is really the ADD, not the near power, and is one of the easiest ways to confuse an optical shop.

The exact layout can differ. The goal is that the patient and dispenser can immediately identify which values apply to which viewing distance.

Registration number and prescriber details in India#

The NMC website hosts the Code of Medical Ethics Regulations, 2002, which states in clause 1.4.1 that a physician should display the registration number issued by the State Medical Council / Medical Council of India in the clinic and on prescriptions, certificates and money receipts. The same regulations also address the doctor's name, designation and registration particulars on the prescription letterhead.

Because this is an older regulatory framework hosted by the NMC, and requirements can change or differ by applicable authority, do not treat this article as legal advice. Doctors should verify the current requirements applicable to their registration and practice.

For a practical clinic prescription template, keep these details easy to find:

• Doctor's name
• Recognised qualification(s), as applicable
• Registration number
• Clinic details
• Patient name and relevant identifying details
• Date
• Prescription values
• Signature or appropriate digital sign-off

Putting the registration details into the clinic letterhead can help keep every generated prescription consistent.

Printing and sharing a spectacle prescription#

A good spectacle prescription printing workflow should produce the same information whether the patient receives:

• A printed prescription
• A PDF
• A digital image/Picture Rx
• A copy shared through WhatsApp

Avoid relying on a photograph of a handwritten carbon copy when a clean digital prescription can be generated.

Make sure:

• The minus and plus signs are easy to distinguish.
• Decimal values are legible.
• AXIS is clearly separated from CYL.
• RE/LE or OD/OS is visible.
• ADD and PD are not hidden in small text.
• Doctor and registration details remain on the shared copy.
• The final signed version is the version the patient receives.

This is particularly useful when the patient forwards the prescription directly to an optical shop.

For the broader prescription workflow, see our guides on digital prescription software, digital prescriptions and prescription printing software.

Printable spectacle prescription format: what a clinic form can look like#

A clinic may use a structured spectacle prescription form or eye prescription format PDF instead of handwriting the same fields repeatedly.

A simple printable layout can contain:

Below the table, the clinic can place:

• Patient name and date
• Doctor name and qualification
• Registration number, as applicable
• Clinic contact details
• Lens recommendation, when clinically relevant
• Doctor signature or appropriate digital sign-off

Important: A blank eye prescription format PDF or spectacle prescription form is only a documentation template. It is not a valid prescription until the appropriate clinical examination has been performed and the prescription has been completed and signed by the responsible practitioner.

Spectacle prescription checklist for an eye OPD#

Before the patient leaves, check the following:

1. Patient name and date are correct.
2. Right and left eyes are clearly identified.
3. RE/LE or OD/OS is used consistently.
4. SPH values include the correct sign.
5. CYL values are clearly recorded where prescribed.
6. Every recorded CYL has the corresponding AXIS.
7. AXIS is recorded as a clear value from 1–180°.
8. Distance and near correction or ADD are clearly distinguished.
9. PD is entered only when measured.
10. Doctor name, qualification and registration details are present as applicable.
11. The prescription is signed or appropriately digitally signed.
12. The patient receives a legible print or digital copy.
13. Any relevant follow-up or recheck instruction is documented.

Spectacle prescription in children#

A spectacle prescription in children should be documented just as clearly as an adult prescription, while the clinical examination and follow-up remain appropriate to the child's age and condition.

For the prescription document:

• Identify the child and examination date clearly.
• Keep RE/LE or OD/OS consistent.
• Record the prescribed SPH, CYL and AXIS values clearly.
• Include ADD or near information when clinically prescribed.
• Record PD only when it has actually been measured and is needed for dispensing.
• Include follow-up or recheck instructions when clinically appropriate.

The purpose of the format is the same: make the prescription easy for the family and optical dispenser to read without guessing.

Common spectacle prescription mistakes#

Even when the refraction itself is correct, formatting mistakes can create unnecessary calls from patients and optical shops.

1. Missing plus or minus signs#

2.00 is ambiguous if the sign is not clear.

2. CYL without AXIS#

A cylinder value without its corresponding axis is incomplete for dispensing.

3. Swapping right and left eyes#

Copying values from an autorefractor, trial frame or previous prescription requires careful eye-side verification.

4. Mixing OD/OS with RE/LE#

Use one eye-label convention throughout the document.

5. Unclear ADD#

Keep near addition visibly separate from the distance prescription.

6. Illegible handwriting#

Axis and decimal values can be especially difficult to interpret on handwritten slips and photographs.

7. Confusing spectacle and contact-lens prescriptions#

A spectacle prescription should not automatically be treated as a contact-lens prescription. Contact lenses require additional fitting information, and the powers can differ because the lens sits directly on the eye rather than at spectacle vertex distance.

8. Sending an incomplete WhatsApp photo#

A cropped or blurry image can remove the patient details, eye labels, registration information or part of the prescription. A generated digital copy is easier to read.

Spectacle prescription vs contact lens prescription#

A spectacle prescription and a contact lens prescription are not interchangeable.

A spectacle Rx describes the optical correction for lenses positioned in a spectacle frame. Contact lenses sit directly on the eye and require a separate fitting workflow with lens-specific parameters.

If a patient asks whether their glasses prescription can simply be used to order contact lenses, they should be directed to the appropriate eye-care professional for contact-lens fitting.

How eye clinic software can improve spectacle prescriptions#

If you are evaluating eye clinic software or prescription software, do not look only for a generic text box.

For an eye OPD, useful prescription features include:

• Separate structured fields for each eye
• SPH, CYL and AXIS
• Near ADD
• PD
• Visual acuity
• IOP
• Patient history and previous prescriptions
• Reusable clinic letterhead
• Registration details
• Print-ready prescription
• PDF or image output
• WhatsApp sharing
• Previous prescription copy-forward
• A clear audit trail of the patient's clinical record

The benefit of structured fields is not simply a better-looking prescription. It reduces the amount of manual retyping between examination, prescription generation and patient sharing.

How Medabha handles spectacle prescriptions#

Medabha's eye workflow is designed around structured eye examination and prescription data. It records visual acuity, IOP, sphere, cylinder, axis, near addition and PD for each eye, and those values can be printed on the prescription.

After the prescription is signed, Medabha can also provide a Picture Rx for WhatsApp, allowing the patient to share the same prescription digitally with an optical shop.

Last visit's readings sit under today's fields, and one tap copies the previous glasses Rx as a starting point to review and edit. Acuity and IOP are left for you to measure fresh. Medabha's eye clinic page shows the full set of eye fields and charts.

See Medabha features and digital prescription software for the broader workflow.

Medabha is outpatient clinic software for one doctor per clinic with an optional receptionist. It is not designed to manage optical-shop inventory, hospital wards or hospital-wide operations.

If you are comparing clinic systems more broadly, see our eye clinic software buying guide and small-clinic management software guide.

Final takeaway#

A good spectacle prescription format in India should make the prescription easy for three people to understand: the clinician who creates it, the patient who receives it, and the optical professional who dispenses it.

Use a consistent RE/LE or OD/OS layout, record SPH/CYL/AXIS clearly, separate ADD from distance power, include PD only when measured, and keep the patient and prescriber details visible on every printed or digital copy.

If your clinic needs a reusable spectacle prescription form or eye prescription format PDF, create the blank template separately from the patient-specific prescription so the template is never mistaken for a completed clinical Rx.

For an eye OPD, structured prescription software can take this one step further by storing the refraction fields in a consistent format and generating a clean prescription for printing or WhatsApp sharing.

Explore Medabha features, digital prescription software, or pricing to see how the workflow fits into an outpatient clinic.

Sources and further reading#

• National Medical Commission — Code of Medical Ethics Regulations, 2002
• D. Y. Patil Institute of Optometry — How to Read Your Eyeglass Prescription
• All About Vision — How to Read Your Eyeglass Prescription