---
title: "Pupilometer — $50K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/pupilometer"
last_updated: "2026-08-08T18:26:43.768Z"
locale: en
meta:
description: "Niche score 41/100 · $50K/yr market · 16K searches/yr · $80.42 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 41/100 · $50K/yr market · 16K searches/yr · $80.42 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Pupilometer — $50K/yr Amazon US Niche (2026) - Flapen"
---
# **pupilometer**
**Skip it**
A small market ($50K/yr) — this niche doesn't clear our bar today.
Market size 13Growth 32Conversion 49Competition 23Returns 49Price range 71Avg price 82Brand share 23Review moat 97Quality gap 65
**Review moat**
**Incredible****67.79**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$80.42**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$6.50–$126.41**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Okay****3.9%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Okay****3.1%**
return rate — above 5% kills the launch gate
**Growth**
**Okay****+5.9%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****73%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****91%**
top-5 brand share — brand-locked demand
**Market size**
**Bad****$50K**
$50K/yr · 16K searches
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, pupilometer is a $50K/yr Amazon United States market (16K searches/yr). The top 5 brands hold 91% of demand. Verdict: Skip it — 41/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **pupilometer market data**
- **Units sold / yr**
- **500–750**
- avg 0–100/product
- **Revenue / yr**
- **$40K–$60K**
- units × avg price
- **Conversion rate**
- **3.9%**
- **Avg BSR**
- **#234**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **7.3%**
- **Avg brand age**
- **43 months**
- **Avg seller age**
- **227 days**
## **Competition & brand share**
The top 5 products capture 73% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**7 **▼falling
**Sellers**
**11**
**Top-5 brand share**
**91%**
Top 20: 100%
**Top-5 click share**
**73%**
Top 20: 100%
**Open market**
**3%**
- Huanyu36% - AISITESY32% - Hanchen10% - Ezyaid6% - Voinnokal6% - Eyeapolysis6% - Open — no brand owns it (1 brand, 3%)
## **Demand**
Weekly Amazon search volume, last 42 weeks — +5.9% search growth over the last 90 days.
400300Spike '25Spike '26Oct '25Nov '25Jan '26Mar '26Apr '26Jun '26
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/pupilometer/trend)
## **Top pupilometer products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$5K20%$10K30%$15K40%$20K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 14 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Huanyu Optical Digital Pupilometer 45-82mm Pupil Meter PD Meter Pupil Distance Meter Optical Instrument CE Approved (LY-9AT)**Huanyu**$116.87**4.3★90 rev](https://www.amazon.com/dp/B07FJVJ8XL) [2**AISITESY Pupilometer Optics Digital Partial Discharge Meter Pupil Distance Meter Pupil Distance Meter Optical Instrument(LY-9AT)**AISITESY**$80.45**4.4★16 rev](https://www.amazon.com/dp/B0BJVBVQ6S) [3**Hanchen PD Meter Digital Pupil Distance Meter PD Ruler Pupilometer with Memory Function CE Certificate**Hanchen**$56.80**3.8★100 rev](https://www.amazon.com/dp/B07HQM6Z7H) [4**AISITESY Optical Equipment Pupil Measure PD Meter LY-9C Digital with Pupilometer Pd Puilp Distance Meter**AISITESY**$98.13**4.7★7 rev](https://www.amazon.com/dp/B0BJQ2B3F6) [5**Ezyaid PD Ruler with Instruction Manual - Pupillary Distance Ruler for Pupil Distance Measuring PD Measurement Tool for Prescription Eyeglasses Include Eye Care Tips**Ezyaid**$6.99**4.4★477 rev](https://www.amazon.com/dp/B099FDQQ8H)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Optical Digital Pupilometer LED Pupillary Distance Meter Pd Meter with Memory Function Diopter Compensation Pupil Distance Meter Interpupillary Distance Measuring Tool**Voinnokal**$76.78**1 rev8mo ago](https://www.amazon.com/dp/B0G4GTVXNP) [**Pupilometer Optical Digital Pupilometer with LCD Display PD Meter for Optometrists**Eyeapolysis**$78.83**0 rev10mo ago](https://www.amazon.com/dp/B0FQ1TD4ST) [**Optical Vernier PD Ruler: Ophthalmic Pupil Distance Measuring Tool (1 Pack)**Eyeapolysis**$6.50**48 rev12mo ago](https://www.amazon.com/dp/B0FKGDMDLD) [**Optical Digital Pupilometer with Memory Function LCD Display Pupillary Distance Meter Diopter Compensation Pupil Distance Meter PD Measurement Tool**Voinnokal**$79.47**3 rev1y ago](https://www.amazon.com/dp/B0F47V4VKN) [**VV LIINNCXM Digital Pupilometer PD Meter LCD Display Optical Interpupillary Distance Ophthalmic Measuring Tool**VV LIINNCXM**$78.61**3 rev1y ago](https://www.amazon.com/dp/B0DW98CNDV)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Optical Digital Pupilometer LED Pupillary Distance Meter Pd Meter with Memory Function Diopter Compensation Pupil Distance Meter Interpupillary Distance Measuring Tool**Voinnokal**$76.78**5.0★**▲ 138%**](https://www.amazon.com/dp/B0G4GTVXNP) [**Pupilometer Optical Digital Pupilometer with LCD Display PD Meter for Optometrists**Eyeapolysis**$78.83**0.0★**▲ 56%**](https://www.amazon.com/dp/B0FQ1TD4ST) [**Huanyu Optical Digital Pupilometer with Memory Function LCD Pupil Distance Meter Diopter Compensation PD Measurement Tool for Eyes CE Approved (LY-9A)**Huanyu**$113.75**4.4★**▲ 55%**](https://www.amazon.com/dp/B07FG7YMZF) [**VV LIINNCXM Digital Pupilometer PD Meter LCD Display Optical Interpupillary Distance Ophthalmic Measuring Tool**VV LIINNCXM**$78.61**5.0★**▲ 53%**](https://www.amazon.com/dp/B0DW98CNDV) [**Optical Vernier PD Ruler: Ophthalmic Pupil Distance Measuring Tool (1 Pack)**Eyeapolysis**$6.50**3.5★**▲ 27%**](https://www.amazon.com/dp/B0FKGDMDLD)
**~~View all trending →~~**
## **What buyers say about pupilometer**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Advertised Vs Actual Product**19%
*“It did what I expected it to do”*
**Ease Of Use**15%
*“Useful”*
**Value For Money**13%
*“When that's done I would rate it a 5-star considering its price”*
**Functionality-Overall**8%
*“Works no issues”*
**Instructions/User Manual/Troubleshooting**8%
*“easy to follow instructions”*
**Efficiency**8%
*“Works well”*
**GPS**8%
*“the reason I like it so much is very easy to do the vertex distance and the PDS”*
**Quality-Overall**4%
*“good product”*
**Strength**4%
*“effective”*
**Time Taken**3%
*“Saved me a lot of time and effort”*
### **What buyers complain about **
**Measurement/Reading Accuracy**22%
*“The lines are nearly impossible to see when trying to measure”*
**Instructions/User Manual/Troubleshooting**22%
*“No instructions”*
**Value For Money**17%
*“You can get much better at this price point”*
**Ease Of Use**17%
*“it's way more difficult to use”*
**Quality-Overall**6%
*“Cheaply made”*
**Design-Overall**6%
*“Questionable build quality”*
### **Top return reasons **
**Measurement/Reading Accuracy**24%
**Functionality-Overall**14%
**Instructions/User Manual/Troubleshooting**14%
**Size-Overall**9%
**Value For Money**9%
**Quality-Overall**8%
**Ease Of Use**8%
**Defective Material/Parts**4%
**Product Condition**3%
**Advertised Vs Actual Product**3%
## **Common questions**
- **Is pupilometer profitable to sell on Amazon United States?**
- The niche generates $50K/yr across 14 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is +5.9%. Flapen's verdict: Skip it (41/100).
- **How competitive is the pupilometer niche?**
- 7 brands and 11 sellers compete. The top 5 products take 73% of clicks and top 5 brands hold 91% of demand.
- **What do buyers complain about in pupilometer?**
- Top complaints mined from reviews: Measurement/Reading Accuracy, Instructions/User Manual/Troubleshooting, Value For Money. The return rate is 3.1%.
- **What does it cost to enter the pupilometer niche?**
- Listings span $6.50–$126.41; the average listing price is $80.42 (sweet spot $15–$100). The average incumbent carries 68 reviews — the moat a new listing must climb.
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