|
KMID : 1011420150200040437
|
|
Journal of Korean Ophthalmic Optics Society
2015 Volume.20 No. 4 p.437 ~ p.443
|
|
|
Physical Properties Assessment of Soft Contact Lens with Halogen and Carboxylic Substituted Pyridine as Additive
|
|
Kim Duck-Hyun
Sung A-Young
|
|
|
Abstract
|
|
|
Purpose: This study evaluated the optical and physical and characteristics of soft contact lens polymerized with addition of 3-chloropyridine-4-carboxylic acid and 3-fluoropyridine-4-carboxylic acid in the basic hydrogel contact lens material. In particular, the utility of 3-chloropyridine-4-carboxylic acid and 3-fluoropyridine- 4-carboxylic acid as a hydrogel contact lens material was investigated.
Methods: In this study, 3-chloropyridine-4-carboxylic acid and 3-fluoropyridine-4-carboxylic acid were used as additives. Also, 2-hydroxyethyl methacrylate, acrylic acid, methyl methacrylate and a cross-linker EGDMA were co-polymerized in the presence of AIBN as an initiator.
Results: The physical properties of the produced polymers were measured as followings. The water content of 34.54~37.15%, refractive index of 1.4320~1.4342, tensile strength of 0.2872~0.3608 kgf and contact angle of 57.82~79.57o, UV-B transmittance of 76.8~82.4% and UV-A transmittance of 84.6~86.6% were obtained respectively.
Conclusions: Based on the results of this study, contact lens material containing 3-chloropyridine-4-carboxylic acid and 3-fluoropyridine-4-carboxylic acid is expected to be able to used as a material for high wettability and UV-block hydrogel contact lens.
|
|
|
KEYWORD
|
|
|
3-Chloropyridine-4-carboxylic acid, 3-Fluoropyridine-4-carboxylic acid, Wettability, UV-block
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|