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class="wikitable"

|+FDA classification of soft contact lens materials{{cite web |last1=Stretton |first1=Serina |title=Should Silicone Hydrogels be Placed in a Separate FDA Soft Contact Lens Category? |url=http://www.siliconehydrogels.org/editorials/oct_04_serina.asp |website=siliconehydrogels.org |access-date=3 September 2020 |date=October 2004}}

!FDA lens group

!Adopted name

!Transmissibility level

(Dk{{nbsp}}x10{{sup

11}})

!Water content

!Chemical composition

rowspan="5" |I
{{small|non-ionic
low water content}}

|galyfilcon A

|60

|47%

|–

lotrafilcon A

|140

|24%

| rowspan="2" |{{abbr|DMA|N,N-dimethylacrylamide}}, siloxane, {{abbr|TRIS|tris-(hydroxylmethyl) aminomethane}}

lotrafilcon B

|110

|33%

polymacon

|7.5

|36%

|{{abbr|HEMA|2-Hydroxyethyl methacrylate}}

tetrafilcon

|9.0

|43.5%

|{{abbr|HEMA|2-Hydroxyethyl methacrylate}}, {{abbr|MMA|methyl methacrylate}}, {{abbr|NVP|N-vinyl pyrrolidone}}

rowspan="3" |II
{{small|non-ionic
high water content}}

|alphafilcon A

|22.9

|66%

| rowspan="2" |{{abbr|HEMA|2-Hydroxyethyl methacrylate}}, {{abbr|NVP|N-vinyl pyrrolidone}}

hilafilcon A

|26.9

|70%

omafilcon A

|19.6

|62%

|{{abbr|HEMA|2-Hydroxyethyl methacrylate}}, {{abbr|PC|phosphorylcholine}}

rowspan="2" |III
{{small|ionic
low water content}}

|balafilcon A

|99

|36%

|{{abbr|NCVE|N-carboxl vinyl ester}}, {{abbr|NVP|N-vinyl pyrrolidone}}, {{abbr|PBVC|poly[dimethylsiloxyl] di[silybutanol] bis[vinyl carbamate]}}, {{abbr|TPVC|tris-(trimethylsiloxysilyl) propylvinyl carbamate}}

bufilcon A

|16.0

|45%

|{{abbr|DA|diacetone acrylamide}}, {{abbr|HEMA|2-Hydroxyethyl methacrylate}}, {{abbr|MAA|methacrylic acid}}

rowspan="3" |IV
{{small|ionic
high water content}}

|etafilcon A

|17.0

|58%

| rowspan="2" |{{abbr|HEMA|2-Hydroxyethyl methacrylate}}, {{abbr|MAA|methacrylic acid}}

ocufilcon D

|19.7

|55%

vifilcon A

|16.0

|55%

|{{abbr|HEMA|2-Hydroxyethyl methacrylate}}, {{abbr|MAA|methacrylic acid}}, PVP

colspan="5" |{{smalldiv|1=

DA{{nbsp}}– diacetone acrylamide; DMA{{nbsp}}– N,N-dimethylacrylamide; HEMA{{nbsp}}– 2-Hydroxyethyl methacrylate; MAA{{nbsp}}– methacrylic acid; MMA{{nbsp}}– methyl methacrylate; NCVE{{nbsp}}– N-carboxl vinyl ester; NVP{{nbsp}}– N-vinyl pyrrolidone; PBVC{{nbsp}}– poly[dimethylsiloxyl] di[silybutanol] bis[vinyl carbamate]; PC{{nbsp}}– phosphorylcholine; TPVC{{nbsp}}– tris-(trimethylsiloxysilyl) propylvinyl carbamate; TRIS{{nbsp}}– tris-(hydroxylmethyl) aminomethane

}}

References

{{reflist}}

{{Arthur C. Clarke Award|state=collapsed}}

{{Paul Loicq Award|state=collapsed}}

{{US archival agencies|state=collapsed}}

{{Taney Court|state=collapsed}}

{{US state flowers|state=collapsed}}

{{HGTV series|state=collapsed}}

{{Big Seven|state=collapsed}}

{{USCopyrightActs|state=collapsed}}