SilSoft Contact Lenses -CEW

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====== SilSoft Contact Lenses ======
  * See [[calculating_contact_lens_power_aphakia|How to Calculate Contact Lens Power in Aphakia]] 
=====SilSoft Apakic====
  * Base Curves: 7.5, 7.7, 7.9, 8.1, 8.3 mm
  * Diameters: 11.3 mm, 12.5 mm
  * Powers: +11.5D to +20.00D (1.00 D steps)

=====SilSoft Super Plus=====
  * Base Curves: 7.5, 7.7, 7.9 mm
  * Diameter: 11.30 mm
  * Powers: +23.00 to +32.00D (in 3.00D steps)
    * +23.00
    * +26.00
    * +29.00
    * +32.00

====Fitting====
===Base Curve===

To convert K readings to curvature in mm use this formula: 
$$r = \frac{337.5}{K}$$

Where:

  * **r** = radius of curvature (mm)
  * **K** = keratometry reading (diopters)
  * **337.5** = derived from the standard keratometric refractive index (n = 1.3375), where 337.5 = (1.3375 − 1) × 1000
<WRAP round box 60%>
^ Average K (D)  ^ Radius of Curvature (mm)  ^ Suggested SilSoft BC  ^
| ≥ 45.0 D       | ≤ 7.50 mm                 | 7.5 mm (steepest)     |
| 43.0–44.9 D    | 7.50–7.85 mm              | 7.7 mm                |
| ≤ 42.9 D       | ≥ 7.86 mm                 | 7.9 mm (flattest)     |
</WRAP>
**Age-Based Corneal Curvature**
  * Newborns (0–2 weeks): Mean K ~49 D (r ≈ 6.9 mm), rapidly flattening to ~46 D by 8 weeks and ~44 D by 12 weeks
  * 0–2 years: Pooled mean corneal radius is 7.41 mm (~45.5 D), which is steeper than older children
  * 2–4 years: Mean K ~43.7 D (r ≈ 7.72 mm), approaching adult values
  * By age 3: Corneal curvature generally reaches the adult range (~43–44 D)

===Power===
[[calculating_contact_lens_power_aphakia|Aphakic Contact Lens Power Calculators]]
====Ordering====
[[https://www.lens.com/contact-lenses/silsoft-super-plus-kids/|Lens.com]]

====Solution====
  * [[https://www.biotrue.com/products/contact-solution/|BioTrue by Bausch+Lomb]]
  * [[https://www.amazon.com/Biotrue-Hydration-Solution-Multi-Purpose-Included/dp/B09WQT2X6K/ref=sr_1_2_sspa?crid=1R4FM3LV690Y2&dib=eyJ2IjoiMSJ9.x2UzbhS2S_CuIMOH3PcT1mKyOV97c5iIqO4uC46ovT0qL_2-qxR7CFMLXnma3gH-H1x7fJOJPoWwf0s8xSwJy2sj3Ui0OiY-WRb6zRGQqlBwEGCYPJb7Z4xpHwnrdowcgYixBZUDYgYwqh8HxxjFCnecPnNhl2Wc7atyLRpLJDMTHsCAGveAZ9WeLqZmzxQdDKHl9Tr5Aijp0Ozvacu4_d5HRjATR6FL_VSm_TqgTP6NY83cRbEZ7Yl1cgtCV1UBdryvhKa9k5fTpBEmQvDDNJg5qDzBNhwIq2Gb9liQCdw.fOhxRJdQSVAsbi82cDXf2aQeyfvWdlnbpCTBh1lDfWw&dib_tag=se&keywords=biotrue&qid=1785193342&sprefix=biotru%2Caps%2C196&sr=8-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1|BioTrue Multi-purpose solution on Amazon]]
====B&L Customer Assistance program====
  * Provides free or reduced cost lenses for patients at or below the federal poverty level
  * [[https://pi.bausch.com/globalassets/pdf/Downloads/ECP/vision-care/silsoft-patient-assistance-program-form.pdf|Form]]

=====Resources=====
  * {{::pediatric_and_adult_aphakia_-_silsoft_and_silsoft_super_plus_contact_lenses_bausch_lomb.pdf |B&L website info}}
  * {{::silsoft-pifg.pdf |Package Insert}}