Trial Lens Sets
A trial lens set is the foundation of subjective refraction and low-vision work: the graded case of spherical, cylindrical, prism, and accessory lenses your team drops into a trial frame to confirm a prescription, demonstrate a correction to the patient, or refine a result the phoropter cannot. For optometric and ophthalmic practices, a dependable set means clean, scratch-free optics, powers that read true on the lensometer, and lenses that seat flat and secure in their rims year after year. The right trial lens set balances how much power range you need against how portable, durable, and easy to organize the case has to be for the way your clinic actually works.
US Ophthalmic carries the Luxvision trial lens set line, from comprehensive 266-piece cases down to compact cylinder sets for perimetry, alongside our own EZER equipment and a full in-house technical, repair, and spare-parts department. Because we are a US-based provider rather than a drop-ship reseller, every set is backed by US warranty and hands-on support: our specialists can help you match set size, aperture style, and rim material to your chairs and trial frames, and we stand behind the purchase after it ships. Request a quote and we will spec the right configuration for your practice or lab.
How to choose a trial lens set
- Set size and power coverage: Comprehensive 266-piece sets carry a full range of spheres, cylinders, prisms, and accessory lenses for everyday refraction across every patient. A 232-piece set trims redundancy while keeping fine 0.12D low-power steps, and a compact 68-piece cylinder set covers the essentials for perimetry or a mobile bag. Match the lens count to your caseload and how often you refract complex cases.
- Full-aperture vs reduced-aperture lenses: Full-aperture lenses, as in the TL-266 family, use larger rims that give a wide, uncluttered view and support accurate vertex distance, which is valuable for high refractive errors and low-vision patients. Reduced-aperture designs like the TL-232 are lighter and more economical while still delivering a full power range. Both seat in a standard trial frame, so the choice comes down to how often you handle demanding prescriptions.
- Rim material: Metal rings are durable and hold lenses flat over years of daily handling. Plastic rings keep a set lighter and lower in cost. Color-anodized aluminum or color-coded rings, for example black spheres and red cylinders, speed lens selection at the chair. All three variants seat the same way in a standard trial frame.
- Glass quality and transparency: Refraction accuracy depends on clean, high-transmittance optics with well-controlled aberration. Hand-crafted glass lenses resist scratching better than lower-grade resin, and high-transparency variants such as the TL-266 Hi maximize light throughput for crisper endpoints. Inspect any set for scratch-free lenses that sit tightly in their rims and read true on a lensometer.
- Case, organization, and portability: Leather or leatherette cases are lighter for room-to-room use, while aluminum cases travel and protect better. Look for removable trays, printed diopter indicators, and secure latches or dual combination locks so lenses stay organized and undamaged. A well-laid-out tray shortens every refraction.
- Intended clinical use: General subjective refraction calls for a full 266- or 232-piece case. Visual-field and perimetry work is better served by a focused cylinder set such as the TL-68, which pairs essential spheres with plus or minus cylinders for reliable, artifact-free fields. Second chairs and mobile screeners may only need a lighter, focused set.
Trial lens sets we carry
These are trial lens sets stocked and supported by US Ophthalmic, from comprehensive full-aperture cases to a focused cylinder set for perimetry. Every model ships with US warranty and in-house service backing, and trial frames are available separately to complete the setup.
| Model | Configuration | Best for |
|---|---|---|
| TL-266 | 266-piece full-aperture set, metal rings, hand-crafted glass | Comprehensive everyday refraction in a busy clinic |
| TL-266 Hi | 266-piece high-transparency glass, metal or anodized rings | Practices wanting maximum optical clarity and light throughput |
| TL-266 Italy | 266-piece glass, metal or color-anodized aluminum rings | A premium full set with color-coded rim options |
| TL-232 | 232-piece reduced-aperture set, plastic rings, glass lenses | Lighter, cost-conscious general refraction with fine 0.12D steps |
| TL-68 (+/-) Cylinder | 68-piece compact set of spheres plus cylinders | Perimetry and visual-field correction |
| GR-TL36 | 232-piece glass set, color-coded plastic rings (Gilras) | A color-coded full case for faster lens selection |
Frequently asked questions
What is the difference between a 266-piece and a 232-piece trial lens set? The 266-piece TL-266 is a full-aperture set with metal rings and a complete range of spheres, cylinders, prisms, and accessory lenses for comprehensive refraction. The 232-piece TL-232 uses reduced-aperture lenses in plastic rings, so it is lighter and more economical, with fine 0.12D low-power steps, while still covering the full range most practices need. Heavy or high-Rx caseloads tend to favor the 266; general clinics do well with either.
What does full-aperture versus reduced-aperture mean on a trial lens set? Full-aperture lenses have larger rims that give the patient a wider view and support accurate vertex distance, which helps with high refractive errors and low-vision work. Reduced-aperture lenses are smaller and lighter, lowering both the weight of the case and the cost of the set. Both types seat in the same standard trial frame, so the choice comes down to how often you refract complex prescriptions.
Does a trial lens set include a trial frame? No. Trial frames are sold separately so you can pair the set with the frame style your clinic prefers. We can add a compatible trial frame to your quote so everything arrives ready to use.
Which trial lens set is best for perimetry or visual-field testing? A compact cylinder set such as the TL-68 (+) or TL-68 (-) Cylinder is purpose-built for this. It pairs essential spherical powers with plus or minus cylinders so you can correct astigmatism and obtain reliable, artifact-free visual fields without carrying a full refraction case.
Do you service trial lens sets or supply replacement lenses? Yes. Trial lens sets are purchased new because optical clarity and accurate lens powers are essential to refraction, and as a US-based provider with an in-house technical and spare-parts department, we back every set with US warranty. If a piece is ever scratched or lost, we can help source replacement lenses or trays so your set stays clinic-ready for years. Contact us to confirm current availability and warranty terms.
