IT1216616B - Novel contact lens with surface protrusions - Google Patents
Novel contact lens with surface protrusionsInfo
- Publication number
- IT1216616B IT1216616B IT8820283A IT2028388A IT1216616B IT 1216616 B IT1216616 B IT 1216616B IT 8820283 A IT8820283 A IT 8820283A IT 2028388 A IT2028388 A IT 2028388A IT 1216616 B IT1216616 B IT 1216616B
- Authority
- IT
- Italy
- Prior art keywords
- support
- lens
- carrier
- poly
- pieces
- Prior art date
Links
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 2
- 241001082241 Lythrum hyssopifolia Species 0.000 abstract 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 abstract 1
- 238000004132 cross linking Methods 0.000 abstract 1
- 239000000017 hydrogel Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000000178 monomer Substances 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 239000002504 physiological saline solution Substances 0.000 abstract 1
- -1 poly(HEMA) Polymers 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 230000008961 swelling Effects 0.000 abstract 1
- 239000012780 transparent material Substances 0.000 abstract 1
Abstract
A novel contact lens has the following features: (i) it consists of a carrier optical part (1) and a hydrophilic support (2) mediating contact with the eye, the two parts being of diff. materials; (ii) support (2) is divided into at least two independent pieces protruding above a concave side of the lens and led from the lens circumference towards its centre, with gaps left between individual pieces of support (2); (iii) support (2) is of a water-swelling synthetic crosslinked hydrogel having, when fully swollen with physiological saline, a swelling capacity of 40-95%; (iv) carrier (1) is of a transparent material, e.g. poly(HEMA) or poly(Me methacrylate) having elasticity modulus at least twice as high as that of support (2); and (v) support (2) forms a gap of at least 0.01mm between the eye surface and uncovered carrier (1). Also claimed is mfr. of the lens by forming the protruding pieces of support (2) on the concave side of the lens by applying a crosslinkable soln. of hydrophilic monomer or polymer, followed by crosslinking after solvent (e.g. MeOH or EtOH) evapn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT8820283A IT1216616B (en) | 1988-04-21 | 1988-04-21 | Novel contact lens with surface protrusions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT8820283A IT1216616B (en) | 1988-04-21 | 1988-04-21 | Novel contact lens with surface protrusions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT8820283A0 IT8820283A0 (en) | 1988-04-21 |
| IT1216616B true IT1216616B (en) | 1990-03-08 |
Family
ID=11165418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT8820283A IT1216616B (en) | 1988-04-21 | 1988-04-21 | Novel contact lens with surface protrusions |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1216616B (en) |
-
1988
- 1988-04-21 IT IT8820283A patent/IT1216616B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT8820283A0 (en) | 1988-04-21 |
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