I have no idea what LASIK (laser eye surgery) surgeons are thinking when they perform surgery on engineers with large pupils, let alone engineers with 10-mm pupils when dark adapted (Figure 1). Figure 1. 10-mm dark adapted pupil. Such an engineer sought out our office for a scleral fitting...
Read moreOver the years, we have come to know a lot more about myopia, its aetiology and the sight-threatening conditions high myopia is associated with. Research has shown multiple effective treatment programs, visual environmental interventions, and optical and pharmacological treatments to prevent the progression of myopia, all of which aim...
Read moreBackground Post-surgical ectasia is a complication in which a cornea that has undergone a refractive surgical procedure becomes progressively irregular and thinned leading to protrusion and undesirable visual disturbances such as blur and higher order aberrations. When screening a candidate for LASIK, many factors must be considered to reduce...
Read moreIn the October 2022 edition of Contact Lens Spectrum, Ed Bennett’s report on the GP and Custom Soft Annual Report 2022 provided a comprehensive insight into the prescribing habits of top US practitioners. Scanning the list of subscribers, they are mainly Key Opinion Leaders and researchers, so this may not necessarily...
Read moreIntroduction by Martin Conway In Orthokeratology, the central cornea is flattened by an amount sufficient for the patient to be able to see clearly without lenses. A peripheral ring of power is also created which is approximately equal but opposite to the target refraction i.e. a -3.00 change at...
Read morePenetrating keratoplasty in patients with keratoconus may provide good long‐term visual rehabilitation. There is a relatively low rate of graft failure in this cohort of patients. Graft rejection has been reported to be 5.8–41% with most rejections occurring in the first 2 years. [1-5]. Irregular and high astigmatism may be common...
Read moreIntroduction Acanthamoeba is a free-living unicellular protozoon commonly found in fresh water and soil. The protozoa can be found in two forms: a metabolically active trophozoite and a resistant cyst. Acanthamoeba keratitis (AK) is an infection primarily associated with soft contact lens wearers who demonstrate improper contact lens hygiene...
Read moreThe Optimum range of materials has become established as one of the most popular RGP materials on the market. Recent years have seen remarkable growth in the usage of both ortho-k and scleral lens usage and, in response to this Contamac have developed Optimum Infinite, a hyper-Dk material which cuts...
Read moreOptimum Infinite is Contamac’s first Hyper Dk GP contact lens material to be approved by the FDA. Introducing Optimum Infinite in Las Vegas, the home of gambling, has a certain irony as new products are never guaranteed to become popular, despite years of rigorous development. There are, however, several good...
Read moreBackground: Ectodermal Dysplasias (ED) are genetic conditions affecting the development of skin, hair, teeth, nails, and sweat glands1. Ocular findings include lacrimal drainage obstruction and hypoplasia, punctal agenesis, distichiasis, trichiasis, meibomian gland alterations and ankyloblepharon with sequelae of chronic dry eye2,3. Complications include chronic ocular pain, neurotrophic keratitis, and...
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