SciMed
90D Double Aspheric Lens, 48mm Aperture, Anti-Reflection Coated, Slit Lamp Fundus Lens
90D Double Aspheric Lens, 48mm Aperture, Anti-Reflection Coated, Slit Lamp Fundus Lens
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90D double aspheric ophthalmic diagnostic lens, the industry-standard workhorse for slit-lamp indirect biomicroscopy of the fundus, optic nerve, and posterior segment. Double aspheric glass optics deliver clear high-magnification imaging (2.97× image mag) corrected for field curvature, astigmatism, spherical aberration, and coma. 48mm aperture, 50° field of view and 47mm working distance = wide fundus survey plus dynamic optic-nerve stereo evaluation. Anti-reflection multi-layer coated. Non-contact (patient comfort, no corneal touch, no anesthetic drop). $99.99 direct, versus $250-$450 for Volk V90C / Ocular MaxLight / Nikon 90D branded equivalents.
Applications
- Slit-lamp fundus biomicroscopy: the primary daily-use tool for posterior segment exam in every eye clinic
- Optic nerve evaluation: cup-to-disc ratio, rim analysis, glaucoma surveillance (the 90D's high mag beats the 78D for optic-nerve detail)
- Diabetic retinopathy screening: macula, peripheral hemorrhages, microaneurysms and exudates
- Macular disease evaluation: AMD (dry and wet), macular hole, epiretinal membrane, CSR
- Vitreous exam: vitreous hemorrhage, PVD, floaters
- Retinal tears and detachment surveillance: with scleral depression or wide-field lens combo
- Post-vitrectomy follow-up: post-op posterior segment assessment
- Pediatric fundus exam: non-contact and high mag makes it comfortable for kids (no coupling gel needed)
- Optometry teaching and residency training: the first indirect fundus lens every trainee learns on
Specifications
| Lens Power | 90 diopters (D), high-magnification indirect biomicroscopy |
|---|---|
| Aperture | 48 mm, one of the widest apertures in the 90D class |
| Image Magnification | 2.97× |
| Field of View (Static) | 50° (dynamic FOV extends further with lens tilt) |
| Working Distance | 47 mm, comfortable ergonomic slit-lamp posture |
| Optics | Double aspheric glass, corrects field curvature, astigmatism, spherical aberration, and coma simultaneously |
| Coating | Anti-reflection multi-layer coating (reduces glare, improves contrast and patient comfort in bright slit-lamp illumination) |
| Contact | Non-contact (patient comfort, no anesthetic drop, no coupling gel, no corneal risk) |
| Case | Includes hard protective storage case |
90D vs 78D vs 60D: Which Do You Need?
| Lens | Field of View | Image Mag | Best For |
|---|---|---|---|
| 60D | ~68° | 1.15× | Highest magnification, narrower field, optic nerve detail and macular pathology microscopy. Slower to use, less forgiving to align. |
| 78D | ~81° | 0.93× | Widest field, peripheral fundus survey, retinal tear and detachment screening. Lower mag = less detail resolution. |
| 90D (this lens) | 50° static / ~74° dynamic | 2.97× | The daily-use workhorse, balances field and mag for general fundus, optic nerve, macula. Best "first lens" for residents and general practice. |
Comparison to Premium Branded 90D Lenses
| Brand / Model | Power | Aperture | Coating | Price |
|---|---|---|---|---|
| Volk V90C | 90D | 44mm | AR and antifog | $425-$525 |
| Ocular MaxLight 90D | 90D | 47mm | Ocular's OQM coating | $350-$450 |
| Nikon 90D | 90D | 45mm | Nikon multi-coat | $275-$375 |
| SciMed 90D | 90D | 48mm (widest) | AR multi-layer | $99.99 |
Best For
- Ophthalmology and optometry practices (essential first fundus lens)
- Optometry and ophthalmology residency programs (teaching lens for indirect biomicroscopy)
- Community and rural eye clinics (cost-effective diagnostic tool)
- International eye NGOs, Aravind, LV Prasad, Fred Hollows, Sightsavers, ORBIS
- Backup / spare lens for busy multi-lane practices
- Pediatric ophthalmology (non-contact = child-friendly)
- International DDP procurement for global eye-care programs
Not sure which power you need? Read our 20D vs 78D vs 90D lens buying guide or the complete aspheric lens guide.
Buying for a Practice, Residency, or Eye NGO?
- Volume pricing on 3+ lenses (equip multi-provider practice or residency cohort)
- Net-30 invoicing for verified academic, NGO and practice accounts
- SAM.gov / VA compliant for federal and academic ophthalmology procurement
- Bundle with 20D, 78D, Gonioscope lenses, SciMed complete fundus and angle exam kit at package discount
- International DDP shipping, global eye NGO and academic ophthalmology procurement
FAQ
Which fundus lens should a new optometrist / ophthalmology resident buy first?
90D. Universal recommendation. Wide enough FOV for general survey, high enough magnification for optic nerve and macula. 78D is second (for peripheral screening once you're comfortable with 90D). 60D is a specialist third lens (for detailed macular pathology). Start with 90D, this SciMed 90D specifically is a value-optimal starter lens at $99.99.
How does this compare to Volk 90C?
Volk V90C is the industry gold standard, 20+ years of professional use, premium AR and antifog coating, tight machining tolerances. This SciMed 90D matches the optical prescription (90D double aspheric) and has a wider 48mm aperture (vs Volk's 44mm, actually a small advantage for peripheral view). Volk's coating longevity and longer warranty are the meaningful differences. Price differential: $99.99 vs $425-$525. For residency starter, community clinic, NGO and international market, SciMed hits the value sweet spot. For flagship-practice daily-driver where the lens gets 20+ patients/day, invest in Volk.
Care and cleaning?
Between patients: wipe with lens tissue and optical cleaner (Kim-Wipes and methanol, or optical-grade lens cleaning solution). Between clinical sessions: soft brush and puff air to remove dust. Never touch the lens surface with fingers, skin oils degrade the AR coating. Store in included hard case when not in use. Do NOT use alcohol-based clinical disinfectants on the lens (degrades coating), only lens-cleaning-specific solutions.
Sterilization?
Non-contact lenses don't need sterilization between patients (no patient contact). If accidentally touched (e.g. eyelash brush), wipe with optical cleaner. Do NOT autoclave (destroys AR coating and glass), do NOT immerse in liquid disinfectant.
User Manual (PDF)
Download the Instructions for Use (PDF)
Browse all manuals by category at scimedstore.com/pages/user-manuals. Need a digital or printed copy, or have a question? Email sales@scimedstore.com.
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