PURPOSE To determine the effect of using toric soft contact lenses on corneal biomechanical properties. METHODS We enrolled 33 healthy patients with mean age of 23.18 ± 4.06 and minimal cylinder power of 1 D (-1.98 ± 0.808 SD) and negative history of contact lens use; keratoconic patients were excluded from the study. Toric soft contact lenses (BIOFINITY, Comfilcon A, Coopervision, Southampto...

The purpose of this paper is to consider the long-term results of the iris clip lens in senile aphakia. It is not intended to discuss the many different forms of intraocular lens implants. Ophthalmic surgeons are well aware of the discouraging shortand long-term failure rate when contact lenses are used to correct aphakia, and this has stimulated renewed interest in intraocular lens implants in...

Most contact lens practitioners are dealing with an increasing number of otherwise healthy older (presbyopic) patients. Examination of the literature indicates a persistent theme of age-related change which generally becomes significant after the fourth decade. This review, the second of two parts, documents reported age-related changes in visual acuity, contrast sensitivity, stereoacuity, hype...

Purpose To investigate the correlation between the changes in the ocular surface temperature (OST) and tear film stability over soft contact lenses (SCLs). Methods We enrolled 20 eyes of 20 normal SCL wearers (20 men; 24.4 ± 4.1 years). We used four different daily disposable SCLs: one silicone hydrogel lens (delefilcon A) and three hydrogel lenses (etafilcon A with polyvinylpyrrolidone [PVP]...

PURPOSE To determine whether intolerance to contact lens wear is attributable to clinical or protein characteristics of the tear film. METHODS Thirty-eight subjects participated; 20 were successful contact lens wearers and 18 had discontinued contact lens wear because of discomfort. Baseline tear film (no lens wear) was analyzed with a range of clinical measurements and protein analyses (lact...

Fifty-three patients consecutively admitted to Moorfields Eye Hospital for treatment of suspected microbial keratitis were examined to identify predisposing factors. The principal associations were pre-existing corneal disease (22 patients (41.5%] and contact lens wear (22 patients (41.5%]. In 13 cases (25%) contact lens wear was the only factor in patients with otherwise healthy eyes using con...

Recent advances in wearable electronics combined with wireless communications are essential to the realization of medical applications through health monitoring technologies. For example, a smart contact lens, which is capable of monitoring the physiological information of the eye and tear fluid, could provide real-time, noninvasive medical diagnostics. However, previous reports concerning the ...

Contact lens care solutions are known to have toxic effects on the ocular surface. The ISO 10993-5 standard describes test methods to assess the cytotoxicity of medical devices, but it needs some improvements to discriminate contact lens care multipurpose solutions. First we evaluated the biological hazards associated with the use of ophthalmic solutions, running a collaborative study with the ...

A new portable measuring device for monitoring intraocular pressure with a non invasive system using a prototype of contact lens has been developed. The contact lens is based on a new organic flexible highly piezo-resisitive film sensor that is glued to the central hole of a lens. The measuring system is wire connected to the contact lens and incorporates user interface methods and a Bluetooth ...

UNLABELLED The purpose to do this research was to find out the habits of contact lens wearers towards lens care in this country, and to evaluate the compliance of contact lens wearers. METHODS All respondents underwent an interview regarding questionnaire which was carried out at the Klang Valley and Sabah, Malaysia by trained bilingual optometrists. The questionnaire was obtained from a stud...