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Results for “CONTACT LENSES”

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At least 91 records · Page 5Linked to original sources
PubMed1996

Contact lenses for children.

Contact lenses for children are used to correct a variety of conditions. This paper reviews fitting of soft, silicone elastimer, and rigid gas-permeable contact lenses for therapeutic treatment of aphakia, anisometropia, myopia, hyperopia, esotropia, irregular astigmatism, and nystagmus. Cosmetic custom designs are described for the treatment of aniridia, albinism, amblyopia, and corneal disfigurement. Working with children and gaining their trust requires inventiveness and patience. Prescribing contact lenses for them requires developing good cooperation between the child, the parents, and the practitioner. The rewards of contact lenses wear for the appropriate pediatric patients include improving not only their vision but also their quality of life.

Child↗
PubMed1966

Contact lenses.

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Contact Lenses↗
PubMed1972

Soft contact lenses.

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Contact Lenses, Hydrophilic↗
PubMed1968

Contact lenses.

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Contact Lenses↗
PubMed1982

Soft contact lenses.

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Contact Lenses, Hydrophilic↗
PubMed1998

Scleral contact lenses.

BACKGROUND: Scleral contact lenses provide unique therapeutic and vision rehabilitative properties that overcome the therapeutic gaps encountered with conventional contact lens therapies. CASE REPORTS: Four case reports are presented in which serious visual impairment was remediated with the application of scleral contact lenses: kerataconus, Terriens marginal degeneration, penetrating keratoplasty from Fuchs' dystrophy, and Stevens-Johnson syndrome. CONCLUSION: The availability of new and diverse materials--in particular, the use of highly oxygen-permeable materials for scleral contact lenses--has allowed reevaluation of the clinical role of scleral lenses in the management of irregular corneal surface disorders and ocular surface disease.

Adult↗
PubMed2003

Ciprofloxacin interaction with silicon-based and conventional hydrogel contact lenses.

PURPOSE: Hydrogel contact lenses can be used as bandage lenses to protect the corneal surface after injury. The use of novel silicon-based hydrogel lens materials as bandage lenses has not gained widespread acceptance. As a first step toward advocating their usefulness as bandage lenses, their interaction with ocular pharmaceuticals must be understood because topical agents are often administered in conjunction with bandage lenses. METHODS: The in vitro uptake and release of ciprofloxacin from silicone-based hydrogel (SH) and conventional pHEMA-based (CH) hydrogel contact lenses was examined by spectrophotometric evaluation of the drug concentration in saline solution. RESULTS: The hydrogel contact lenses tested showed similar drug uptake (average 1800 microg/lens) but different levels of drug release. Multiphoton laser microscopy indicated that ciprofloxacin was distributed throughout the lens thickness, with higher levels of drug at the surface owing to drug precipitation. The drug adsorption onto the lenses was partially reversible. The SH lenses released a lower amount of drug than CH lenses (72 vs. 168 microg/lens). Ionic lenses released less drug than non-ionic lenses (127 vs. 151 microg/lens). CONCLUSIONS: The differences in ciprofloxacin uptake and release between SH and CH materials may not be clinically significant because the amount of drug released from all lenses would be above the MIC(90) of ciprofloxacin for common ocular pathogens. These results indicate that material properties have a significant impact on drug-lens interactions.

Adsorption↗
PubMed1997

[Contact lenses--an overview].

Contact lenses are a modern possibility to correct defective sights as an alternative to glasses. They are not only used because of cosmetic reasons but also if there is optical or therapeutical indication from the medical point of view. For keratoconus and cornea globosa are hard contact lenses not only the unique efficient possibility for correction but also contemporary therapy. If cornea is irregular-for instance when there are cicatrices-an essential improvement can be achieved with hard contact lenses in comparison to glasses.

Contact Lenses↗