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  • several
  • There are several kinds of lens designs and materials, and their choice is dependent on the specific disease to be treated, the duration of treatment and the physiologic needs of the diseased cornea. (unicamp.br)
  • myopic
  • One of the most noteworthy developments in spectacle production in the 15th century was the introduction of concave lenses for the myopic or nearsighted. (wikipedia.org)
  • Pope Leo X, who was very myopic, wore concave spectacles when hunting and professed they enabled him to see clearer than his cohorts. (wikipedia.org)
  • ocular
  • In contrast, replacing lenses every morning reduces the overall rate of "ocular adverse events," reports the study by Jerome Ozkan, BOptom of Brien Holden Vision Institute, Sydney, and colleagues. (newswise.com)
  • In the longer-term, mucin deposits may have a protective effect--"perhaps acting as a physical barrier between the lens and ocular surface once successful extended wear has been established. (eurekalert.org)
  • Superficial presentations of CNV are usually associated with contact lens wear, while deep presentations may be caused by chronic inflammatory and anterior segment ocular diseases. (wikipedia.org)
  • PMMA
  • The materials that are classified in the 5 FDA groups include the ones listed in the next 5 sections: The first contact lenses were made of a polymer called polymethylmethacrylate(PMMA) and became available in the 1960s. (wikipedia.org)
  • Lenses made of PMMA are called hard lenses. (wikipedia.org)
  • Long-term use of PMMA or thick hydrogel contact lenses have been found to cause increased eye irritability, photophobia, blurred vision, and persistent haloes. (wikipedia.org)
  • citation
  • citation needed] Over the 21-plus years of production, Canon introduced 134 different FD lenses ranging from 7.5mm through 1,200mm in seventeen different fixed focal lengths and nineteen different zoom ranges, one of the most, if not the most, extensive manual focus lens lines ever produced. (wikipedia.org)
  • night and day le
  • I was very happy with the old night and day lenses, and so when I found myself unable to order them decided to go with new 'no difference' Aqua night and days. (contactlenses.co.uk)
  • Like the other reviewers on here i also used to wear the old night and day lenses for many years but unlike them i still think even with the new aqua name they`re great! (contactlens.co.uk)
  • Maybe i`m just lucky, but i think these night and day lenses are perfect if you want convenience and no hassle! (contactlens.co.uk)
  • I have used the previous night and day lenses for many years. (contactlens.co.uk)
  • soft lens
  • We have a large range of All in One Solutions , Soft Lens Rewetting drops to alleviate dry eyes and convenient Multi Purpose Solution Flight Packs - perfect for your next holiday. (contactlens.co.uk)
  • In 2010, the worldwide market for contact lenses was estimated at $6.1 billion, while the US soft lens market was estimated at $2.1 billion. (wikipedia.org)
  • 1987
  • It served as the Canon SLR interchangeable lens mounting system until the 1987 introduction of the Canon EOS series cameras, which use the newer EF lens mount. (wikipedia.org)
  • prescription lenses
  • Dealing with aberration issues, even when wearing a prescription lenses, can cause tiredness, headaches and eyestrain as the eye is constantly trying to bring objects into focus, Purevision 2 HD contact lenses provide comfortable, clear, crisp vision during the day and into the evening, regardless of the activity and lighting conditions. (contactlens.com.au)
  • Purevision
  • Purevision 2 HD contact lenses have been designed to meet the ever demanding visual needs of today's world - huge amounts of time spent on digital devices, study with classroom time in the evening, increased night time driving after spending longer hours at work and more varied and demanding sports activities. (contactlens.com.au)
  • Purevision 2 HD lenses are much thinner that their older counterpart reducing lid sensitivity and lens awareness. (contactlens.com.au)
  • eyeglasses
  • Clearly is an online retailer of contact lenses, eyeglasses and sunglasses. (wikipedia.org)
  • Headquartered in Vancouver, British Columbia, and with physical stores in Vancouver and Toronto, they are one of the largest online contact lens retailers in North America, and the largest seller of prescription eyeglasses online in the world. (wikipedia.org)
  • practitioner
  • An optician, or dispensing optician, is a technical practitioner who designs, fits and dispenses corrective lenses for the correction of a person's vision. (wikipedia.org)
  • 1981
  • Second-generation FD lenses, first marketed in 1981 as New FD, are mounted like bayonet-mount lenses in that the photographer twists the entire lens body to mount and dismount, though the actual mating surfaces still remain fixed. (wikipedia.org)
  • sore
  • If you're wearing this kind of lens it's particularly important to have regular checkups and to take immediate action if you have a red or sore eye. (contactlens.org.nz)
  • monthly lens
  • Morning or Night versus Monthly Lens ReplacementThe "proof of concept" study evaluated the effects of morning versus night replacement and lens handling in 215 patients using silicone hydrogel EW/CW contact lenses. (newswise.com)
  • In contrast, the adverse event rate for patients who replaced their lenses nightly was about eight percent-not significantly different from the rate for monthly lens replacement. (newswise.com)
  • Today, there is a line which ranges from the 1-day wear to two-week lenses such as the Acuvue 2 and Oasys and the Vita monthly lens. (wikipedia.org)
  • spectacles
  • When compared with spectacles, contact lenses typically provide better peripheral vision, and do not collect moisture (from rain, snow, condensation etc.) or perspiration. (wikipedia.org)
  • Corrective ophthalmic appliances may be contact lenses, spectacles lenses, low vision aids or ophthalmic prosthetics to those who are partially sighted. (wikipedia.org)
  • The appliances are mounted either on the eye as contact lenses or mounted in a frame or holder in front of the eye as spectacles or as a monocle. (wikipedia.org)
  • The first spectacles utilized quartz lenses since optical glass had not been developed. (wikipedia.org)
  • The use of spectacles extended from Italy to the Germany, Spain, France and Portugal. (wikipedia.org)
  • Inflammatory
  • Inflammatory adverse events (such as redness and irritation of the eye) were somewhat less common with morning lens replacement, although the difference was not significant. (newswise.com)
  • refractive
  • He used wax to affix water-filled lenses to his eyes, which neutralized its refractive power. (wikipedia.org)
  • Opticians convert a prescription for the correction of a refractive error into an ophthalmic lens or some other device, such as reading aids or telescopic lenses. (wikipedia.org)
  • advancement
  • 1994 Joseph Dallos Award (CLMA), "outstanding contribution to the development and advancement of the contact lens industry in memory of the Hungarian-born British ophthalmologist Josef Dallos, a pioneer in the development of the first contact lenses. (wikipedia.org)
  • Further advancement in the field of contact mechanics in the mid-twentieth century may be attributed to names such as Bowden and Tabor. (wikipedia.org)
  • care
  • Have your eyes examined regularly and always follow your eyecare professional's instructions for the proper use and care of your contact lense s. (lense.com)
  • Long-term contact lenses require continuous care and maintenance and are expensive to replace. (lensshopper.co.uk)
  • They are cheaper than other longer term lenses and do not require the same level of care. (lensshopper.co.uk)
  • Acuvue.com (official US website) Acuvue.com.au (official AU website) Acuvue.co.uk (official UK website) JnJVisioncare.com (product guide) - for eye care professionals Optix-now.com (independent contact lens guide) - for consumers Acuvue.co.in (official India website) Acuvuearabia.com (official Middle East website) Anon. (wikipedia.org)