Search

The article presents a scenario by which a 25-year old right-handed male patient, who has been presented for a routine eye care, desiring contact lenses. The patient accordingly disclosed that he had been told he had a problem with his pupils and has been experiencing muscular parenthesis, which he described as jumping and twitching in his right hand fingers. Pupillary anomalies are said to be challenging due to its underlying cause that can range from benign conditions to potentially life-threatening disorders. It is further stated that patients with any pupillary abnormality, even without associated neurological symptoms, need to be further evaluated.

The article examines the research which reveals that a piggyback contact lens fits for a keratoconus eye patient in Canada. It says that the piggyback system of fitting contact lenses has gained more popularity over the past few years. It consists of a rigid gas permeable (RGP) lens placed on top of a soft contact lens. Meanwhile, it elaborates several categories of patients who benefit from the piggyback system which includes those patients who are experiencing discomfort with their RGP contact lenses, patients with poor RGP centration, and patients who experience corneal compromise from contact lenses. It also offers information on which contact lenses to choose and discusses the aspects of fitting assessment.

The article reports on the approval on the usage of topical prostaglandins by the Food and Drug Administration (FDA) in Canada. It informs that the topical prostaglandin, manufactured by California-based Allergan Inc., is used for the growth and fullness of eyelash. It also mentions that FDA has previously ordered other companies to cease manufacturing the same drug due to the side effects such as redness of eyes, irritation, and headaches. In addition, it also offers information on the study conducted by Claes Feinbaum from University of Rostock, Germany related to the disadvantage of soft contact lenses.

The article focuses on the historical facts about contact lenses. It is stated that cosmetic colored contact lenses were used as early as 1950 and became popular in the celebrity world. From that time, the movie stars have utilized contact lenses for special effects, such as Bella Lugosi, for instance, who wore contact lenses for the role of Dracula. The author also emphasizes that the said lenses have been used to create the effect blindness and were removed after the miracle in motion picture roles.

The article focuses on multifocal lenses particularly the Varilux which was first introduced to eye care professionals (ECP) in 1959 by the company Essilor. It says that the first Varilux was created in crown glass and was prohibitively expensive because of the type of instrument being used in the lens. It likewise notes that the Varilux has faced several issues in the past because of its changing design that sometimes does not fit to patients. On the other end, every major lens manufacturer like Rodenstock, Zeixx, and Signet Armorlite were in a race to produce a better progressive addition lens (PAL) than Varilux, however, the marketing of Varilux was so extensive and aggressive that for many years, the name Varilux remained synonymous with PAL.

The article highlights the research on the development and use of scleral contact lenses in Ontario. The author stated that the first scleral shell, which has been made from glass has been considered as the first practical contact lense and has been documented as a system for drug delivery to the cornea. In addition, scleral lenses in 1938 has been created in polymethylmethacrylate (PMMA), a more usable, lighter and plastic material to create a mould of the front surface of the eye. Meanwhile, the rigid gas-permeable (RGP) scleral lens developed in 1983 has become an invaluable management tool for several corneal and ocular surface diseases.

The article highlights the research on the importance of understanding the different designs of contact lenses to get the translation to the proper viewing position for the required visual function in Ontario. The author stated that the most popular of the multifocal designs is the simultaneous design, which is available as either an aspheric design or a concentric design. In addition, the aspheric lense is optimized to the eye with the use of wavefront technology. Meanwhile, the gas-permeable lenses, which is available in simultaneous design must get the translation to the proper viewing position for the required visual function.