- Mycobacterium chelonae keratitis associated with soft contact lens wear. [Case Reports]
- CONCLUSIONS: Mycobacterium chelonae is a rare cause of keratitis in soft contact lens wearers. We have identified fewer than five cases of Mycobacterium chelonae keratitis associated with soft contact lenses in the literature. Prompt and accurate diagnosis of the organism using comeal scraping can lead to appropriate therapy and resolution of the keratitis.
- Ocular manifestations of electrical injury: a case report and review of the literature. [Case Reports]
- CONCLUSIONS: Electrically induced injuries can have many ocular manifestations that may occur simultaneously or sequentially, occasionally occurring later than the inciting event. The most common ocular finding is cataract formation.
- A comparison of two pachymetric systems: slit-scanning and ultrasonic. [Controlled Clinical Trial]
- CONCLUSIONS: The Orbscan system measurements of central corneal thickness were greater than ultrasonic pachymeter measurements, a difference that was statistically significantly.
- The relationship between long-term contact lens wear and corneal thickness. [Journal Article]
- CONCLUSIONS: Long-term rigid contact lens wear is associated with a decrease in the average central-corneal thickness (CCT) by an average of 37 microm, in this group of otherwise healthy eyes, compared to no contact lens wear. Long-term soft contact lens wear did not appear to significantly change corneal thickness compared to no contact lens wear. Caution should be exercised when screening patients with a history of long-term rigid contact lens wear for possible excimer-laser photoablative correction.
- Lid-wiper epitheliopathy and dry-eye symptoms in contact lens wearers. [Multicenter Study]
- CONCLUSIONS: This study describes a new clinical condition, lid-wiper epitheliopathy, an alteration of the epithelium of that portion of the marginal conjunctiva of the upper eyelid that wipes the ocular surface, diagnosed by staining with fluorescein and rose bengal dyes.
- Retrospective safety study of the herrick lacrimal plug: a device used to occlude the lacrimal canaliculus. [Journal Article]
- CONCLUSIONS: Approximately 10% of the patients who underwent implantation with the HLP in this series presented with a device-related adverse event, most commonly epiphora, which usually resolved following plug removal with a saline perfusion method. For the two patients (0.9%) whose epiphora did not resolve following plug removal, both had the same symptom before plug implantation, so it is unclear if persistence was the result of plug retention in the lacrimal drainage system or merely continuation of a preexisting condition.
- Initial selection of soft contact lenses based on corneal characteristics. [Journal Article]CLAO J. 2002 Oct; 28(4):202-5.CJ
- CONCLUSIONS: Normal variations in corneal asphericity have the least influence whereas normal variations in HVID have the greatest influence in changing the corneal sagittal depth. The most appropriate measurement to take to select the optimum soft contact lens specification may be the HVID.
- Objective assessment of aberrations induced by multifocal contact lenses in vivo. [Journal Article]
- CONCLUSIONS: Z(1)3(rho,theta) and Z(0)4(rho,theta) coefficients may be useful objective markers of success or failure for such contact lenses. The -2D lens had a more predictable effect on SA compared with the +2D lens design. The opposite occurs when considering the effects on the higher fifth-order order aberrations.
- Microbiologic evaluation of frequent-replacement soft contact lenses. [Journal Article]
- CONCLUSIONS: Bacteria spreading from the environment or from skin flora to the eyes showed more diversity in the group of frequent-replacement soft contact lenses with a high water content. Additionally, Penicillium spp also was isolated in this group. Therefore scrupulous attention to daily lens care is crucial for people who wear frequent-replacement soft contact lenses.
- Clinical acceptance of two multipurpose solutions: MPS containing HPMC versus citrate-based MPS without rubbing. [Randomized Controlled Trial]CLAO J. 2002 Oct; 28(4):186-91.CJ
- CONCLUSIONS: The overall clinical performance of the citrate-based solution used without manual rubbing was similar to that of the solution containing HPMC. The subjective results of comfort-level and dryness with the two regimens demonstrated that the inclusion of HPMC did not provide unique performance advantages.
- The effect of the poly(ethylene glycol) chain on surface exchange of rigid gas-permeable contact lenses. [Journal Article]
- CONCLUSIONS: The hydrophobic surface of the RGPCL was changed to a hydrophilic surface by graft polymerization of PEG. This suggests that novel RGPCL surfaces can be designed by graft polymerization, using such ethylene glycol groups.
- Spherical indentations of human and rabbit corneal epithelium following extended contact lens wear. [Journal Article]
- CONCLUSIONS: Spherical indentations of the corneal epithelium induced by mucin balls appear to be gaps or holes that can extend deep into the corneal epithelium. Indentations may potentially open a pathway for infectious microorganisms to penetrate the cornea. Surprisingly, stromal cells immediately beneath the holes were stimulated to proliferate, and there seemed to be an increase in localized cell density.
- Comparison of tear-film osmolarity in different types of contact lenses. [Controlled Clinical Trial]
- CONCLUSIONS: When a contact lens is placed in the eye, the lens alters the normal structure of the tear film and affects its rate of evaporation; therefore tear-film osmolarity may increase. In our study, all contact lenses produced a similar effect on tear-film osmolarity.
- PRK-pTK as a treatment for a patient with Thygeson's superficial punctate keratopathy. [Case Reports]
- CONCLUSIONS: Successful treatment of Thygeson's superficial punctate keratopathy in a patient with a low myopia may be achieved with the use of combined PRK-PTK procedures.
- Time to resolution of contact lens-induced corneal warpage prior to refractive surgery. [Journal Article]
- CONCLUSIONS: We observed a 12% incidence of significant contact lens-induced corneal warpage in patients undergoing evaluation for keratorefractive surgery. Warpage occurred with all types of contact lens wear but resolved at different rates. To optimize the quality and predictability of keratorefractive procedures, an appropriate waiting period is necessary for contact lens-induced corneal warpage to stabilize. We suggest that resolution of corneal warpage be documented by stable serial manifested refractions, keratometry, and corneal topographic patterns before scheduling patients for keratorefractive surgery.