Quick Answer
For progressive (and bifocal) lenses, you must include the ADD value — the reading addition on your prescription. Distance SPH/CYL/AXIS alone are not enough. ADD typically ranges from about +0.75 to +3.50. Choose Progressive or Bifocal at checkout, enter ADD exactly as written, and verify PD. Missing or wrong ADD produces near-vision blur or an unusable corridor.
What People Actually Struggle With
Presbyopia often arrives quietly in the mid-40s: phone text creeps farther away, menus need brighter light, and single-vision distance glasses no longer cover everything. Many shoppers then select progressive lenses online — but paste only the distance portion of their RX.
What gets left behind:
- ADD (also labeled “Near Add,” “Addition,” or similar)
- Clarity on whether the RX is for progressives vs reading-only
- Understanding that ADD is usually the same for both eyes even when SPH differs
- Expecting progressives to work without an adaptation period
Others upload a photo of an RX that shows distance powers clearly but crops the ADD line at the bottom of the slip. The order proceeds as single vision or as an incomplete multifocal request, and near vision disappoints after delivery.
This guide focuses on the extra data progressives need and how to enter it correctly at KEZVOR — so the lab receives a complete, manufacturable prescription.
Progressive vs “Just Stronger Reading Glasses”
Reading glasses (or single-vision near) help at one distance. Progressives are different: they are engineered corridors of power. Without ADD, there is no defined near target for that corridor. Ordering “the strongest progressive” without an exam value is not a substitute for ADD.
If your goal is only intermittent reading and you do not want a multifocal, choose readers or single-vision near instead — and still use powers from a proper exam when possible.
What ADD Is — and Why Progressives Require It
ADD (Addition) is the extra plus power used for near work. Progressive lenses blend distance, intermediate, and near zones in one lens. The lab uses ADD to build the near portion of that corridor.
| Lens type | Distance SPH/CYL/AXIS | ADD required? |
|---|---|---|
| Single vision distance | Yes | No |
| Single vision reading | Reading power (or derived) | Usually ordered as readers / near |
| Bifocal | Yes | Yes |
| Progressive | Yes | Yes |
If ADD is missing, the lab cannot correctly manufacture multifocal lenses for your near needs. Short reference: What Is ADD on My Prescription?.
Typical ADD Ranges and What They Mean
| ADD (approx.) | Common near demand |
|---|---|
| +0.75 to +1.25 | Early presbyopia |
| +1.50 to +2.00 | Common mid-range reading add |
| +2.25 to +2.75 | Stronger near demand |
| +3.00 to +3.50 | Higher adds — follow your exam exactly |
Do not invent ADD by “testing drugstore readers” and guessing. Use the value from your eye exam.
5 Solutions That Work
1. Locate ADD on the RX before you open checkout
ADD is often printed once (shared for OD and OS) below or beside the distance grid. If your PDF or slip has no ADD and you need progressives, return to your eye care professional — do not estimate.
2. Select Progressive (or Bifocal) — not Single Vision
Choosing single vision hides or ignores ADD and will not give you a no-line multifocal. Compare options: Progressive vs Bifocal.
3. Enter ADD exactly as written
Match signs and decimals (+2.00, not `200` or `2`). If OD and OS list different ADDs (uncommon), enter each as shown and contact support if the form expects one value.
4. Pair ADD with accurate PD
Progressive corridors are sensitive to PD error. Verify measurement with How to Measure Your PD and read PD mismatch symptoms.
5. Choose frames suited to progressive fitting
Deeper lens height generally supports a more usable corridor. Browse Progressive Glasses and Best for Progressive, then confirm fit with Try-On.
Comparison Table
| Checkout choice | Data you must provide | Best when |
|---|---|---|
| Single vision distance | SPH, CYL, AXIS, PD | One distance RX, no near add needed |
| Readers / near | Reading power or near RX | Dedicated near tasks |
| Bifocal | Distance RX + ADD + PD | Want distinct near segment, easier adaptation |
| Progressive | Distance RX + ADD + PD | Seamless distance → intermediate → near |
FAQ
What extra data do progressive (presbyopic) lenses need?
ADD is the critical extra field, along with accurate PD. Enter full distance SPH/CYL/AXIS plus ADD.
Is ADD the same as my reading glasses power?
Not always. ADD is addition relative to the distance prescription. Drugstore +1.50 readers are not automatically ADD +1.50 for progressive manufacturing — use the exam value.
Can I order progressives without ADD if I upload my RX?
Only if the uploaded prescription clearly shows ADD. If it does not, we cannot invent it.
Do both eyes need the same ADD?
Often yes. Follow your written RX. If values differ, preserve each eye’s numbers.
How long does it take to adapt to progressives?
Many wearers need 7–14 days of consistent use. Full timeline, week-by-week expectations, and stop-rules: How Long Does It Take to Adapt to Progressive Lenses?. Persistent dizziness after that may involve PD or fitting — see PD mismatch guide.
Should first-time progressive wearers choose bifocals instead?
Bifocals adapt faster for some people but show a visible line and offer less intermediate (computer) utility. Lifestyle preference matters — compare in Progressive vs Bifocal.
Does a two-year-old ADD still work?
ADD often increases with age. Prefer a prescription updated within about a year. See prescription freshness.
What if checkout will not accept my ADD?
Confirm you selected Progressive/Bifocal lens type. If the value is outside the form range, contact us with your full RX photo.
Checklist Before You Click Pay
- [ ] Spectacle RX (not contact lens RX)
- [ ] Distance SPH / CYL / AXIS for OD and OS
- [ ] ADD present and entered
- [ ] Lens type = Progressive (or Bifocal, if that is your choice)
- [ ] PD verified
- [ ] Frame with adequate lens height for progressives
Next Steps
- Confirm ADD on your latest spectacle prescription.
- Follow How to Fill Out Your Prescription.
- Shop progressive-ready frames.
- Eligible new customers: apply FIRSTPAIR at coupons when you order your first pair.
KEZVOR content is educational and does not replace an in-person refraction. If ADD is missing from your paperwork, schedule an exam rather than estimating.