Danyang Seesee Optical Co., Ltd. / Optical Industry Park, Danyang, Jiangsu
Finished and semi-finished lenses, 1.499 to 1.74, cast and coated in one plant.
Index ladder
Every substrate Seesee casts, with the Abbe number, specific gravity, UV cut, design and stock power range it publishes. Higher powers are made to order by RX.
| Index | Material | Abbe | Specific gravity | UV block | Design | Power range |
|---|---|---|---|---|---|---|
| 1.499 | CR-39 | 58 | 1.32 | 350 nm | SPH | S +6.00 to -6.00, C 0.00 to -4.00 |
| 1.56 | UNO-55 | 35 | 1.28 | 385 nm | SPH / ASP | S +6.00 to -8.00, C 0.00 to -4.00 |
| 1.59 | Polycarbonate | 32 | 1.20 | 380 nm | SPH | S +6.00 to -6.00, C 0.00 to -4.00 |
| 1.61 | MR-8 | 42 | 1.30 | 395 nm | SPH / ASP | S +6.00 to -10.00, C 0.00 to -4.00 |
| 1.67 | MR-7 | 32 | 1.36 | 395 nm | ASP | S +6.00 to -12.00, C 0.00 to -4.00 |
| 1.74 | MR-174 | 33 | 1.46 | 395 nm | ASP | S +6.00 to -15.00, C 0.00 to -4.00 |
Data sheets
Eight families, one table each
The catalogue page is laid out the way a lab buyer files it: index, material, Abbe, gravity, coatings, diameters, base curves and power ranges, copied from the product pages without rounding.
Single visionSix indices, one ladder1.499 to 1.74 and PC 1.59 / UC, HC, HMC, SHMC02
Blue cutNormal base and clear base, tested to GB/T 38120-20191.49 to 1.74 / UC, HC, HMC, SHMC03
Bifocal and progressiveRound top, flat top, blended, five corridorsCR-39, 1.56, 1.61 / UC, HC, HMC, SHMC04
PhotochromicIn the monomer or spin coated, eight colours1.50 to 1.74 / UV400, UV420, Karat05
Function lensesMyopia control, anti-fatigue, Karat, anti-glare, honeycomb1.56 to 1.74, PC 1.591 / UV410 to UV42006
PC and TrivexImpact resistant, coated on Satisloh1.591 and 1.558 / 1.61 / HC, HCT, HMC, SHMC07
Freeform RXIOT and Shamir designs, digitally surfaced1.50 to 1.74 / EMI, UC, HC, HMC, SHMC08
Sunlens and polarizedTinted, mirror, gradient, polarized CR-39 and MR1.499 to 1.67 / UC, HC, HCT, HMC, REVOSubstrate and coating under one roof
Casting, hard coating, multi coating
Seesee describes itself as a caster that also runs the coating: "We own the most advanced production lines to produce both the coating and the substrates of the plastic optical lenses." The About page photographs eight steps from mould fitting to warehouse, in a dust-free workshop.
Audited quality system
Certificates, with their numbers
The plant shows four documents. Three are current or dated: ISO 13485 by DNV, ISO 9001 by CQM, and a U.S. FDA establishment registration. The fourth is an EC REP appointment that expired in March 2025.
The plant on film
Danyang, Jiangsu, the lens-making cluster
Seesee sells finished and semi-finished lenses to wholesalers and labs in Asia, Europe, North America and Latin America. It supports factory inspections and its CEO visits clients abroad every year, per the About page.
Knowledge
Twenty articles for buyers
From May to November 2024 Seesee published twenty English articles on materials, index, blue cut, photochromic and multifocal choices. The three latest are here; the rest are on the Knowledge page.
- No. 20
Round vs. Flat vs. Invisible vs. Progressive: Which Multifocal Lens Is Right for You?
Compares round-top, flat-top, blended/invisible and progressive multifocals (design, best for, aesthetics, US retail cost ranges) with pros/cons.
Multifocal lenses allow wearers to see clearly across multiple distances in one pair of glasses.
- No. 19
Common Blue Cut Lenses vs. Super Clear Blue Cut Lenses: Which One Offers Better Protection for Your Eyes?
Explains HEV risk, then compares tinted "common" blue cut (cheap, effective, yellowish) with "super clear" clear-base blue cut (true colour, higher transmittance).
- No. 15
The Comprehensive Guide to 6 Key Blue Cut Lenses Applications
Six use cases: reading/close work, prescription glasses, computer use, night driving, children, outdoor.
From reading and prescription eyewear to night driving, children's use, and outdoor activities, blue cut lenses offer versatile benefits.
Ask for a free sample
Seesee offers a free sample on every landing page. Send the index, design, coating and power you need.