Rigid Lens Care Systems

Aug 6, 2023 by in OPHTHALMOLOGY Comments Off on Rigid Lens Care Systems

Introduction This chapter reviews the care systems used with rigid contact lenses. Of course, many of the general principles of contact lens care, such as the rationale for lens cleaning…

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Soft Lens Care Systems

Aug 6, 2023 by in OPHTHALMOLOGY Comments Off on Soft Lens Care Systems

Introduction With the very notable exceptions of daily disposable lenses and extended-wear lenses that are discarded after each period of continuous wear, all contact lenses must be subjected to some…

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Rigid Lens Measurement

Aug 6, 2023 by in OPHTHALMOLOGY Comments Off on Rigid Lens Measurement

Introduction In contrast to soft lenses (see Chapter 7), rigid contact lenses are individually fitted and then lathe cut to meet particular optical, geometrical and material specifications. Although the manufacturing…

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Rigid Lens Materials

Aug 6, 2023 by in OPHTHALMOLOGY Comments Off on Rigid Lens Materials

Introduction Rigid lens materials have played an important role in the development of rigid contact lenses generally and occupy a small but significant place in the range of currently available…

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Rigid Lens Optics

Aug 6, 2023 by in OPHTHALMOLOGY Comments Off on Rigid Lens Optics

Introduction Unlike soft lenses, which drape to fit the cornea so that on the eye the geometry of the back surface closely conforms to that of the anterior cornea, the…

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Rigid Lens Manufacture

Aug 6, 2023 by in OPHTHALMOLOGY Comments Off on Rigid Lens Manufacture

Introduction Although lathing technology has been used to fabricate contact lenses since their invention over 130 years ago, developments over the past quarter of a century in precision engineering, materials…

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Soft Toric Lens Design and Fitting

Aug 6, 2023 by in OPHTHALMOLOGY Comments Off on Soft Toric Lens Design and Fitting

Introduction The use of soft toric lenses (in preference to spherical soft lenses) is indicated when there is ocular astigmatism present, be it corneal or noncorneal, that warrants correction. Unlike…

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Soft Lens Design and Fitting

Aug 6, 2023 by in OPHTHALMOLOGY Comments Off on Soft Lens Design and Fitting

Introduction Assessment of soft contact lens fit is probably the most commonly undertaken task in contact lens practice but is also one of the least discussed, possibly because it is…

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Anterior Eye

Aug 6, 2023 by in OPHTHALMOLOGY Comments Off on Anterior Eye

Introduction A critical aspect of contact lens practice is monitoring the ocular response to lens wear, which ranges from acceptable physiological changes to adverse pathology. To do this, practitioners must…

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