Rigid Contact Lenses
Rigid Contact Lenses are also known as gas permeable contact lenses. Rigid gas permeable contact lenses offer more oxygen transmission to eye and thus provide healthier eye vision. Traditional hard contact lenses are different from rigid contact lenses as these lenses are made of silicon hydrogel and traditional hard contact lenses were made from PMMA. Rigid gas permeable bifocal contact lenses are ideal solution for people with presbyopia and require these types of rigid gas permeable contact lenses for reading newspaper and other reading articles from closer distance. One major difference between rigid and soft contact lens is the size, gas preamble rigid contact lens have a smaller diameter as compared to soft contact lenses.
Rigid gas permeable contact lens passes more oxygen to the eyes than old soft contact lenses where as some new soft lenses made of silicone hydrogel also transmit more oxygen as compare to traditional soft contact lenses. Rigid and soft contact lenses are both available under different brand names from different contact lenses manufacturers. Synergy rigid contact lenses have an RGP center and a soft outer skirt that provide healthier vision, stability and deposit confrontation than soft contact lenses. Contact gas lens permeable are rigid but cleaning is easy and rigid gas permeable contact lenses can be used for longer period that is why it cost cheaper than soft contact lenses. Clinical rigid contact lenses have less chances of disinfection because these types of contact lenses do not absorb the disinfecting substance and preservatives easily.
Major difference between contact lens rigid and soft arise due to comfort of wearing as rigid contact lens are not as comfortable as soft contact lenses because it take some time to adapt with the person eyes who wear rigid contact lenses. Assessing the fit of rigid gas permeable contact lenses can only be analyzed by a eye specialist doctor , therefore it is recommended to fit the rigid gas permeable contact lenses in the presence of eye practitioner if you are new rigid contact lens user. Basic principles to fitting rigid contact lenses lies in the fact that it should be aligned directly with your eye pupil and it should be cleaned properly every time removed. Eye tear influence lens especially in rigid contact lens fitting as tears contain different substance that can effect on vision of rigid contact lenses wearers.