510(k) · Cleared
Recalled · Class II · 2025BostonSight Scleral
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Bostonsight · HQD Lens, Contact (Other Material) - Daily
Cleared on Jan 4, 2019 as substantially equivalent to K171404 (Bausch + Lomb, Incorporated, 2017) and 2 other predicates after a 49-day review. Its family tree reaches back 9 generations to 1994. 1 later device descends from it. It has been recalled once.
- Decided
- Jan 4, 2019
- Review
- 49 days
- Class
- Class II
- Product code
- HQD
- Recalls
- 1
- Predicates
- 3
Its longest line of descent runs back 9 generations to K943177 (1994). 21 ancestors in all, the oldest P860022 (1987). 1 later device descends from it, 1 citing it directly.
- Root · 9 generations backK943177 Boston (R) 7 - 30(Enflufocon a)Polymer Technology Corp. · 1994 · Recalled
- 5 generations between
- 3 generations backK161461 BostonSight PD Prosthetic DeviceBostonsight · 2016 · Recalled
- 2 generations backK171404 BOSTON XO (hexafocon A), BOSTON XO2 (hexafocon B)Bausch + Lomb, Incorporated · 2017
- 1 generation backK180616 OPTIMUM GP (roflufocon D, roflurocon E) Daily Wear Contact Lens…Contamac, Ltd. · 2018
- This deviceK183175 BostonSight ScleralBostonsight · 2019
- Descendant · cites it directly · 0 of its ownK241571 BostonSight® Specialty LensesBoston Foundation For Sight, Inc. D/B/A Bostonsight · 2024
Show all 9 generations
- Root · 9 generations backK943177 Boston (R) 7 - 30(Enflufocon a)Polymer Technology Corp. · 1994 · Recalled
- 8 generations backK000795 Rigid Gas Permeable Contact LensPolymer Technology · 2000
- 7 generations backK020006 Dyna Intra-Limbal LensLens Dynamics, Inc. · 2002
- 6 generations backK053124 Boston ES (Enflufocon a), Boston EO (Enflufocon B) and Boston XO…Bausch & Lomb, Incorporated · 2006
- 5 generations backK071266 Boston X02 (Hexafocon B) Rigid Gas Permeable Contact LensBausch & Lomb, Inc. · 2007 · Recalled
- 4 generations backK153066 BostonSight IC Corneal Lens, BostonSight IC Scleral LensBoston Foundation For Sight · 2016
- 3 generations backK161461 BostonSight PD Prosthetic DeviceBostonsight · 2016 · Recalled
- 2 generations backK171404 BOSTON XO (hexafocon A), BOSTON XO2 (hexafocon B)Bausch + Lomb, Incorporated · 2017
- 1 generation backK180616 OPTIMUM GP (roflufocon D, roflurocon E) Daily Wear Contact Lens…Contamac, Ltd. · 2018
- This deviceK183175 BostonSight ScleralBostonsight · 2019
Most influential descendants
Showing 1 of 1 · See all- K241571BostonSight® Specialty LensesBoston Foundation For Sight, Inc. D/B/A Bostonsight · 2024 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −9 | K943177 | Boston (R) 7 - 30(Enflufocon a) | Polymer Technology Corp. | 1994 | 1 |
| −8 | K000795 | Rigid Gas Permeable Contact Lens | Polymer Technology | 2000 | — |
| −7 | K020006 | Dyna Intra-Limbal Lens | Lens Dynamics, Inc. | 2002 | — |
| −6 | K053124 | Boston ES (Enflufocon a), Boston EO (Enflufocon B) and Boston XO (Hexafocon a)… | Bausch & Lomb, Incorporated | 2006 | — |
| −5 | K071266 | Boston X02 (Hexafocon B) Rigid Gas Permeable Contact Lens | Bausch & Lomb, Inc. | 2007 | 2 |
| −4 | K153066 | BostonSight IC Corneal Lens, BostonSight IC Scleral Lens | Boston Foundation For Sight | 2016 | — |
| −3 | K161461 | BostonSight PD Prosthetic Device | Bostonsight | 2016 | 1 |
| −2 | K171404 | BOSTON XO (hexafocon A), BOSTON XO2 (hexafocon B) | Bausch + Lomb, Incorporated | 2017 | — |
| −1 | K180616 | OPTIMUM GP (roflufocon D, roflurocon E) Daily Wear Contact Lens, HEXA100… | Contamac, Ltd. | 2018 | — |
| 0 (this device) | K183175 | BostonSight Scleral | Bostonsight | 2019 | — |
| +1 | K241571 | BostonSight® Specialty Lenses | Boston Foundation For Sight, Inc. D/B/A Bostonsight | 2024 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1987 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1997 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 0 |
| 2004 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2024 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in HQD? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new HQD device
- #1 K240618 Acuity 200™ (fluoroxyfocon A) Rigid Gas…score 19.4 · 12 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (3)
Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K171404 | BOSTON XO (hexafocon A), BOSTON XO2 (hexafocon B)Summary page 5…(hexafocon A) and Boston XO2® (hexafocon B) Rigid Gas Permeable Contact Lens” By Bausch + Lomb Inc. 510(k) number; K171404 ƒ “OPTIMUM GP (Roflufocon D, Roflurocon E) Daily Wear Contact Lens” By Contamac Ltd.… | 2017 |
| * | K180616 | OPTIMUM GP (roflufocon D, roflurocon E) Daily Wear Contact Lens, HEXA100 (hexafocon A)…Summary page 5…) number; K171404 ƒ “OPTIMUM GP (Roflufocon D, Roflurocon E) Daily Wear Contact Lens” By Contamac Ltd. 510(k) number; K180616 ƒ “BostonSight PD Prosthetic Device” By BostonSight 510(k) number; K161461… | 2018 |
| * | K161461 | BostonSight PD Prosthetic DeviceSummary page 5…amac Ltd. 510(k) number; K180616 ƒ “BostonSight PD Prosthetic Device” By BostonSight 510(k) number; K161461 IV. DEVICE DESCRIPTION The BostonSight Scleral daily wear contact lenses are manufactured with a large diameter RGP lens… | 2016 |
What descends from it? (1)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K241571 | BostonSight® Specialty Lenses | 2024 | 0 |
Has anything in its family been recalled? (0 Class I)
Recalls of this device
| Date | Class | Recall | Root cause | Reason |
|---|---|---|---|---|
| Jun 10, 2025 | Class II | Z-2190-2025 | Process control | Select orders of lenses were manufactured with errors impacting sagittal height, haptics, or both. |
No ancestor or descendant has a Class I recall.
What does this lineage say?
- The line of descent spans 25 years and passes through 9 companies; a new generation was cleared every 1.5 years on median.
- 4 of the 21 ancestors have a recall of any class.
- Of its descendants, K241571 (Boston Foundation For Sight, Inc. D/B/A Bostonsight, 2024) has gone furthest, with 0 descendants of its own.
- 4 other devices also cite its predicate K171404.
How does its category compare?
All HQD devicesHQD Lens, Contact (Other Material) - Daily: FDA decisions, review times, recalls and adverse event reports over 20 years. 2019, this device’s year, is highlighted.
FDA decisions per year · HQD
5in 2024
2026 to Oct 25, outlined.
Median 510(k) review, days · HQD
80in 2024
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · HQD
1in 2010
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · HQD
2in 2025
MAUDE reports naming product code HQD, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 4 | 78 | 0 | 6 |
| 2008 | 5 | 100 | 0 | 8 |
| 2009 | 2 | — | 0 | 12 |
| 2010 | 0 | — | 1 | 2 |
| 2011 | 2 | — | 0 | 7 |
| 2012 | 2 | — | 0 | 10 |
| 2013 | 0 | — | 0 | 15 |
| 2014 | 1 | — | 0 | 26 |
| 2015 | 0 | — | 0 | 5 |
| 2016 | 7 | 119 | 0 | 1 |
| 2017 | 9 | 66 | 0 | 3 |
| 2018 | 5 | 53 | 0 | 0 |
| 2019 | 2 | — | 0 | 5 |
| 2020 | 1 | — | 0 | 2 |
| 2021 | 3 | 123 | 0 | 3 |
| 2022 | 3 | 29 | 0 | 3 |
| 2023 | 3 | 77 | 0 | 8 |
| 2024 | 5 | 80 | 0 | 3 |
| 2025 | 0 | — | 0 | 2 |
| 2026 | 1 | — | 0 | — |
What is it indicated for?
BostonSight Scleral daily wear contact lenses are indicated for the correction of refractive ametropia (myopia, hyperopia, astigmatism and presbyopia) in aphakic and non aphakic persons. Also, the lenses may be prescribed in eyes that require a rigid contact lens for the management of irregular corneal conditions such as keratoconus, pellucid marginal degeneration, keratoglobus, post-LASIK ectasia, or following penetrating keratoplasty or refractive…
Read the full statement (337 words)
BostonSight Scleral daily wear contact lenses are indicated for the correction of refractive ametropia (myopia, hyperopia, astigmatism and presbyopia) in aphakic and non aphakic persons. Also, the lenses may be prescribed in eyes that require a rigid contact lens for the management of irregular corneal conditions such as keratoconus, pellucid marginal degeneration, keratoglobus, post-LASIK ectasia, or following penetrating keratoplasty or refractive surgery.
Furthermore, eyes suffering from certain ocular surface disorders may benefit from the physical protection, aqueous hydrated environment and the saline bath provided by scleral lens designs.
BostonSight Scleral daily wear contact lenses are indicated for therapeutic use for the management of irregular and distorted corneal surfaces where the subject:
1. cannot be adequately corrected with spectacle lenses
2. requires a rigid gas permeable contact lens surface to improve vision
3. is unable to wear a corneal rigid gas permeable lens due to corneal distortion or surface irregularities
Common causes of corneal distortion include, but are not limited to, corneal infections, trauma, tractions as a result of scar formation secondary to refractive surgery (e.g. LASIK or radial keratotomy) or corneal transplantation. Causes may also include corneal degeneration (e.g. keratoconus, keratoglobus, pellucid marginal degeneration, Salzmann's nodular degeneration) and corneal dystrophy (e.g., lattice dystrophy, granular corneal dystrophy, Reis-Bucklers dystrophy, Cogan's dystrophy).
The BostonSight Scleral daily wear contact lenses are also indicated for therapeutic use in eyes with ocular surface disease including, but not limited to, ocular Graft-versus-Host disease, Sjégren’s syndrome, dry eye syndrome and Filamentary Keratitis, limbal stem cell deficiency (e.g. Stevens-Johnson syndrome, chemical radiation and thermal burns), disorders of the skin (e.g. atopy, ectodermal dysplasia), neurotrophic keratitis (e.g. Herpes simplex, Herpes zoster, Familial Dysautonomia), and corneal exposure (e.g. anatomic, paralytic) that might benefit from the presence of an expanded tear reservoir and protection against an adverse environment. When prescribed for therapeutic use for a distorted cornea or ocular surface disease, the BostonSight Scleral daily wear contact lenses may concurrently provide correction of refractive error.
The lenses may be disinfected using a chemical disinfection (not heat) system only.
Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K183175 · printed Nov 6, 2026
Cite this page
510(k) Report. “K183175: BostonSight Scleral.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K183175
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026