## Abstract In the present study, samples of lotrafilcon A, balafilcon A, and galyfilcon A contact lenses were observed by atomic force microscopy (AFM) in tapping mode at areas ranging from 0.25 to 400 μm^2^. Mean roughness (Ra), root‐mean‐square roughness (Rms) and maximum roughness (Rmax) in nan
Polymeric hydrogels for soft contact lenses
✍ Scribed by Singh, J. ;Agrawal, K. ;Ray, A. R. ;Singhal, J. P. ;Singh, H. ;Dada, V. K. ;Mehta, Manoj R.
- Publisher
- John Wiley and Sons
- Year
- 1992
- Tongue
- English
- Weight
- 244 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0021-9304
No coin nor oath required. For personal study only.
✦ Synopsis
Methods
N-vinyl pyrrolidone (NVP), methyl methacrylate (MMA), and hydroxypropyl methacrylate were obtained from Fluka A.G. (Germany) and used after distillation under vacuum." Ethylene glycol dimethacrylate (EDMA) was also obtained from Fluka AG. (Germany) and was used without any purification.
📜 SIMILAR VOLUMES
The number of contact lenses worn has increased steadily in the last decades. The number and types of complications have increased in approximately the same degree. New, hitherto unknown, complications are continually described. The complications are classified according to the factors which cause t
Bacterial adherence and colonization of biomedical prosthetic implants is one of the main causes for implant withdrawal. The abhesive (anti-adhesive) effect of poloxamer 407 on several Gram-positive and Gramnegative strains and the site of action of its effect have been investigated. Poloxamer 407 s
## Abstract This work sought to undertake a comprehensive investigation of the measurement errors associated with contact angle assessment of curved hydrogel contact lens surfaces. The contact angle coefficient of repeatability (COR) associated with three measurement conditions (image analysis COR,
This article provides direct evidence that the rate of evaporation from the anterior surface of a hydrogel contact lens is related to the bulk water transport within the contact lens, analogous to diffusion-controlled evaporation. The evaporative flux of water from the anterior surface of a contact