SciMed
20D Aspheric Lens and 4-Mirror Gonioscope Bundle, 4 Each
20D Aspheric Lens and 4-Mirror Gonioscope Bundle, 4 Each
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Value bundle: 4 pieces of 20D Double Aspheric Lens and 4 pieces of 4-Mirror Gonioscope Lens, the complete ophthalmic diagnostic lens set covering BIO (binocular indirect ophthalmoscopy) retinal exam AND anterior chamber angle assessment (gonioscopy) for glaucoma workup. Multi-lens quantity supports teaching programs, multi-lane clinical practices, specialty rotation training and spare lenses for high-drop-risk workflows. $360 for 8 total lenses = $45 per lens, versus $150-$300/lens sold individually. Anti-reflection multi-coated, protective cases for each lens.
Bundle Contents
| Lens | Qty | Purpose |
|---|---|---|
| 20D Double Aspheric Lens | 4 | Binocular Indirect Ophthalmoscopy (BIO), retinal and posterior segment examination. Standard workhorse for retinal periphery, diabetic retinopathy screening, retinal detachment screening. |
| 4-Mirror Gonioscope Lens | 4 | Anterior chamber angle examination for glaucoma workup, direct visualization of angle structures (Schwalbe's line, trabecular meshwork, scleral spur, ciliary body band). Standard for gonioscopy in glaucoma and narrow-angle screening. |
Clinical Applications
20D lens (BIO retinal exam):
- Retinal periphery examination, retinal detachment, retinal tear, lattice degeneration
- Diabetic retinopathy screening and management
- Age-related macular degeneration (AMD) monitoring
- Retinal vascular disease, retinal artery/vein occlusion
- Post-cataract retinal exam
- Neonatal retinal exam (ROP screening)
- Trauma-related retinal exam
4-Mirror Gonioscope lens (anterior chamber angle):
- Primary open-angle glaucoma workup, angle grading (Shaffer / Spaeth)
- Angle-closure glaucoma screening and treatment planning
- Pigmentary glaucoma workup, trabecular pigment assessment
- Pseudoexfoliative glaucoma, angle structures and PXF deposits
- Post-cataract intraocular lens position assessment
- Neovascular glaucoma, angle neovessel identification
- Uveitic glaucoma, angle inflammation and synechiae
Why Buy the Bundle vs Individual Lenses
- Teaching program stocking: optometry / ophthalmology residency programs need 4-6 lenses per lens type for student rotation, bundle covers this at institutional pricing
- Multi-lane clinical practices: 3-4 exam room build-out where each lane needs its own lens set
- Spare and backup coverage: lens drops during clinical use are common; having a spare prevents lost clinical time
- Cost savings: $360 bundle = $45/lens vs $150-$300/lens individually
- Practice fellowship training: multiple learners can practice simultaneously without lens contention
Best For
- University optometry and ophthalmology teaching programs
- Ophthalmology residency and fellowship rotations
- Multi-lane clinical practices (retina and glaucoma specialties)
- Community eye clinics and rural outreach programs
- Cataract and eye camps (NGO, Aravind / L V Prasad / Orbis style)
- International eye clinics via DDP (India, GCC, LATAM, SE Asia)
Buying for a Program or Multi-Lane Practice?
- Volume pricing on 3+ bundles, university teaching programs, multi-clinic and NGO
- Net-30 invoicing for verified optometry / ophthalmology / academic accounts
- SAM.gov / VA compliant procurement
- Full 20D, 78D, 90D and 28D pack available separately if you need all four BIO lens types
- Individual 20D lens or 4-mirror gonioscope also available separately
- International DDP shipping, huge eye care markets in India, LATAM, MENA, SE Asia
- NGO cataract camp pricing on 5+ bundle orders
FAQ
Why this bundle vs individual lens purchase?
$360 for 8 lenses = $45/lens vs $150-$300/lens sold individually. Ideal for teaching programs, multi-lane clinics needing coverage across specialties and workflows. Provides both BIO retinal exam capability (20D) and glaucoma angle exam capability (4-mirror) in one purchase.
Is 20D the right power for my BIO workflow?
20D is the workhorse BIO lens for adult retinal exam, most retinal specialists use 20D as primary. For pediatric BIO, 28D provides better working distance. For high-magnification retinal detail, 90D or 78D via slit lamp is preferred. For diabetic retinopathy screening, 20D and 90D combination is standard.
What does 4-mirror mean on the gonioscope?
4-mirror gonioscope has 4 angled mirrors around the central lens periphery, giving 90° views of the anterior chamber angle from 4 quadrants simultaneously. This is the standard modern configuration (vs older 1-mirror or 3-mirror Goldmann designs). Better efficiency for glaucoma workup, one lens position shows all 4 angle quadrants.
Are these OEM or aftermarket lenses?
These are SciMed lenses (India-manufactured), same optical performance class as Volk / Ocular Instruments premium OEMs at 25-40% of premium pricing. Anti-reflection multi-coated optics, protective cases, 1-year warranty.
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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