Description
What’s Included
- OptiLight LED Upgrade Module — Classic tower-style version
- Direct plug-in replacement for the P44S / HS366 (Reference 366 · 2518/3) 6V halogen bulb
- 1-year Digital Eye Center warranty
Condition & Warranty
Brand new. The OptiLight LED Conversion Kit ships new, ready to install with no tools or modifications. Covered by a 1-year warranty on parts and workmanship.
Slit Lamp LED Conversion Kit — OptiLight for Classic P44S / HS366 Slit Lamps
This slit lamp LED conversion kit replaces the standard P44S / HS366 (also referenced as Reference 366 or 2518/3) 6V 4.5A 27W halogen bulb used in classic tower-style slit lamps, upgrading the instrument to modern LED illumination without any change to the slit lamp itself. The OptiLight module matches the same mechanical footprint — the P44S / E14 flange collar base with 9-hole positioning alignment — so it drops into place and preserves the original optical alignment. Only the light source changes: the LED delivers stable, homogeneous white light from the first second with no warm-up, no color shift, and no flicker as the instrument heats up. Heat emission at the lamp head drops significantly for greater patient comfort during prolonged examinations, and LED life far exceeds the roughly 100 hours of the original halogen — eliminating the recurring cost and downtime of bulb replacements.
Light safety matters at the slit lamp: a review indexed by the National Library of Medicine outlines the standard methodology used to evaluate retinal optical radiation hazards from light sources directed into the eye. A slit lamp LED conversion kit gives you a stable, consistent light source with lower heat at the lamp head, so illumination stays predictable throughout the exam.
Why Practices Choose the OptiLight LED Conversion Kit

- Direct plug-in — no tools, no modifications — the module matches the P44S / E14 flange collar footprint with 9-hole alignment, installing in minutes with no adaptation to the host instrument.
- Homogeneous LED white light — stable, consistent illumination from the first second; no warm-up, no color shift, and no flicker as the instrument heats up.
- Runs cool — significantly lower heat emission at the lamp head improves comfort during prolonged patient examinations.
- Long service life — LED lifespan far exceeds the ~100 hours of the original halogen, cutting recurring bulb-replacement cost and downtime.
- Universal fit — one module, six brands — engineered for the classic non-halogen tower-style slit lamp configuration shared across Haag-Streit, Topcon, Marco, Burton, Mentor, and Shin-Nippon / Rexxam.
- Preserves optical alignment — matching the original bulb geometry keeps the slit beam and illumination column correctly aligned after the swap.
Clinical Applications
- Routine anterior segment exams — consistent white illumination for lids, conjunctiva, cornea, anterior chamber and lens.
- Corneal evaluation — stable light for direct, diffuse and retro-illumination techniques without the brightness drift of an aging halogen bulb.
- Contact lens fitting and follow-up — even illumination for assessing lens fit, movement and corneal surface.
- Long or high-volume clinic days — cooler operation at the lamp head keeps longer examinations more comfortable for the patient.
- Extending the life of a trusted slit lamp — modernize the light source of a classic instrument instead of replacing the whole slit lamp.
Who This Is For
- Practices with classic tower-style slit lamps — any Haag-Streit, Topcon, Marco, Burton, Mentor, or Shin-Nippon slit lamp using the P44S / HS366 halogen bulb.
- Clinics tired of recurring bulb replacements — LED service life eliminates the ~100-hour halogen replacement cycle and its downtime.
- Offices upgrading exam comfort — cooler, flicker-free, homogeneous illumination for longer anterior-segment examinations.
Technical Specifications
| Spec | Detail |
| Brand | OptiLight |
| Product Type | LED upgrade module (slit lamp) |
| Replaces | Reference 366 · HS366 · P44S 6V 4.5A 27W · 2518/3 |
| Base Type | P44S / E14 flange collar — 9-hole alignment |
| Voltage | 6V |
| Compatible Brands | Haag-Streit, Topcon, Marco, Burton, Mentor, Shin-Nippon / Rexxam |
| Lamp Type | Classic tower-style slit lamp (non-halogen) |
| Installation | Direct plug-in — no tools or modifications |
| Heat Emission | Minimal — runs cool |
| Condition | Brand new |
| Warranty | 1-year Digital Eye Center warranty |
Compatible Slit Lamp Models
| Brand | Models |
| Haag-Streit | BM 900 (Classic), BQ 900, BA 900, BX 900, BP 900 |
| Topcon | SL-3, SL-3D, SL-3F, SL-3E, SL-5, SL-5D, SL-6E |
| Marco | II-B, III, V (non-Ultra models) |
| Burton | 800, 825, 830, 850, 1000 |
| Mentor | G10, GH12, S10, SH12 |
| Shin-Nippon / Rexxam | SL-80, SL-101, SL-102, 1000 |
If your slit lamp runs on a P44S pre-focus flanged bulb — also referenced as HS366, Reference 366, or 2518/3 — this is the correct module. If you have a newest-generation Haag Streit BM900 / BQ900 / BP900 / BI900, use the OptiLight LED Conversion Kit Long instead.
Compare OptiLight Slit Lamp LED Conversion Kit Options
| Feature | OptiLight Classic | OptiLight (Haag-Streit 900, older models) | OptiLight Long |
| Format | Plug-in LED module replacing the P44S / HS366 bulb | LED light housing replacing the original bulb housing | LED light housing, long version |
| Compatible slit lamps | Classic tower-style: Haag-Streit, Topcon, Marco, Burton, Mentor, Shin-Nippon / Rexxam | Haag-Streit 900, BM 900, BQ 900 (older models) | Newest Haag-Streit BM 900, BQ 900, BP 900, BI 900 |
| Condition | Brand new | Brand new | Brand new |
| Warranty | 1-year | 1-year | 1-year |
| Price | $500 | $1,030 | $1,267 |
Not sure which version fits? Check the bulb in your slit lamp: if it is a P44S pre-focus flanged bulb (HS366 / Reference 366 / 2518/3), this Classic module is the one. Haag-Streit 900-series owners can also consider the OptiLight LED Conversion Kit for older models or the OptiLight LED Conversion Kit Long for the newest models.
Questions about the OptiLight LED Conversion Kit? Contact us to confirm your slit lamp model and bulb reference.



