Application Of Soft Contact Lens Research Articles

Thermokeratoplasty for treatment of indolent corneal ulcer of endothelial origin in the dog. Report of two cases

Two cases of endothelial degeneration and indolent corneal ulcer are reported. In the first case, a 14-year-old, female Dalmatian dog had a 1-year history of endothelial degeneration and an indolent corneal ulcer of 2 months duration. In the second case a 10-year-old, male Springer spaniel dog, had a 6 months history of endothelial degeneration and an indolent corneal ulcer of 1 month duration. In both cases medical and surgical treatment had failed. Thermokeratoplasty was performed in both cases, followed by soft contact lens application and administration of topical antibiotics and mydriatics/cycloplegics. The healing time was 4 and 5 weeks respectively. In both cases the result was in accordance with the previously reported cases confirming that thermokeratoplasty is the treatment of choice in case of indolent corneal ulcer of endothelial origin.

Evaluation of stability of lens rotation and lens wear comfort of toric soft contact lenses in Singapore

s / Contact Lens & Anterior Eye 38 (2015) e13–e46 e45 Conclusions: CRT and RNFLmeasurements in both groupswere slightly higher after focus adjustment in the system software. In group II (high myopia) all measurements were decreased in comparison to group I (medium myopia). Both methods of refractive error correction (within the examined range) enabled good quality images and objective morphometric analysis. Soft contact lens application may be an alternative correction of high myopia in case of refractive error exceeding focus adjustment range. Ilona Piotrowiak was born in 1983 in Bydgoszcz, Poland. Ilona graduated from the Nicolas Copernicus University, Faculty of Medicine in2008and started a residency inophthalmology in2009. Illona is an author and co-author ofmany international articles and haspresentedpapers onnumerous occasions at various congresses. Illona’s professional interests include anterior segment of the eye, diagnostic and treatment. Illona is a Member of the Polish Society of Ophthalmology (PTO) and the European Society of Cataract and Refractive Surgeons (ESCRS). http://dx.doi.org/10.1016/j.clae.2014.11.078

Impact of soft contact lens with spherical power on central retinal thickness and retinal nerve fiber layer measurements in spectral optical coherent

Purpose: The aim of the study is to compare central retinal thickness (CRT) and retinal nerve fiber layer (RNFL) in spectral optical coherence tomography (SOCT) measurements in eyes with medium and high myopia (≥3.0Dsph) after soft contact lens application and without additional correction but following focus adjustment provided by device software according to refractive error.

Quantitative Assessment of Bandage Soft Contact Lens Wear Immediately After LASIK

To evaluate the efficacy and tolerability of overnight bandage soft contact lenses applied immediately after LASIK. Bandage soft contact lenses were applied immediately following bilateral simultaneous LASIK in 161 consecutive patients. Signs and symptoms associated with contact lens wear were prospectively recorded at 1 hour, 4 hours, and the following morning, using a standardized questionnaire. Contact lenses were removed at 1 hour if patients were symptomatic of intolerance. If no signs of contact lens intolerance appeared at 1 hour, the lenses were removed the following morning. No contact lenses were applied in 61 patients after LASIK. One hour after the procedure, contact lenses were removed from 47 patients due to intolerance. In these patients, contact lens removal was associated with a significant decrease of the total score the next morning (0.31±0.55) compared to 1 hour (5.65±1.60, P<.0001). A similar decrease of the total score was noted in those patients who tolerated the contact lenses (0.20±0.52 vs 1.30±1.78) and those in whom the contact lenses were not applied (0.76±1.19 vs 3.24±1.93). Mucoid discharge at the lid margins was noted in 52.6% of patients and mild corneal edema was noted in 28.8% of patients with bandage soft contact lenses at 12 to 18 hours. Bandage soft contact lens application after LASIK is associated with significant reduction of symptoms during the immediate postoperative period. However, removal of these lenses may be necessary shortly after the procedure.

Application of soft contact lens in the treatment of corneal perforations

目的 评价软性角膜接触镜在治疗角膜穿孔中的效果.方法 9例(9眼)新鲜角膜穿孔伴前房消失,其中角膜溃疡致穿孔7例,角膜穿孔伤2例.所有患眼均配戴软性角膜接触镜治疗.戴镜期间根据不同病例选择用药,接触镜每周消毒1次.结果 所有患眼1～2 d内前房恢复,22-40 d角膜溃疡愈合,5例病灶见新生血管长人,1例角膜溃疡前房反复消失,后行穿透性角膜移植,2例角膜穿孔伤口对合整齐.结论 软性角膜接触镜在治疗角膜小穿孔巾是一种安全有效的辅助治疗方法。

Synthesis, characterization and properties of novel highly oxygen permeable amphiphilic membranes

AbstractThe objective of this research was to develop new strategies for the synthesis of novel optically clear highly oxygen permeable membranes exhibiting appropriate water uptake and mechanical properties for possible ophthalmic applications. Thus a series of bicontinuous amphiphilic conetworks containing well‐defined poly‐ (ethylene glycol) and polydimethylsiloxane segments crosslinked by three novel crosslinking/modifying agents were synthesized, characterized, and evaluated. This paper concerns the design and synthesis of the crosslinking/modifying agents (see Fig. 2), and their use for the synthesis of clear, highly oxygen permeable amphiphilic membranes. Select membranes exhibit outstanding oxygen permeabilities (&gt;200 barrers) far superior to contemporary commercial soft contact lenses, together with mechanical properties and water uptake appropriate for extended wear soft contact lens application. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 308–316, 2007

Benefits and Side Effects of Bandage Soft Contact Lens Application after LASIK: A Prospective Randomized Study

To evaluate benefits and side effects of bandage soft contact lens (BSCL) insertion after LASIK in relation to patients' characteristics. Prospective, randomized, bicenter comparative investigational trial. One hundred patients (200 eyes) with myopia and/or myopic astigmatism. Each patient underwent consecutive (Marburg, Germany) or simultaneous (Mainz, Germany) bilateral LASIK. At the end of the procedure, the first treated eye received a drop of ofloxacin and dexamethasone, patch, and transparent protective shield for 2 to 4 hours. The fellow eye received in addition a BSCL, soaked in the same eyedrops for 20 to 24 hours. Schirmer II test results, first-day uncorrected visual acuity (UCVA), and tolerance of contact lens wear (poor, moderate, good) were recorded. Patients' subjective preference for the BSCL on the first postoperative day was graded as more comfortable than fellow eye, no difference, or less comfortable. Three months after surgery, the corneal flap was photographed in retroillumination for objective evaluation of microstriae. Statistical significance was determined using the Kruskal-Wallis 1-way analysis of variance on ranks test. Fifty-four percent of patients felt discomfort in the eye that had the BSCL (contra-BSCL subgroup), whereas 27% enjoyed having a BSCL (pro-BSCL subgroup). The remaining 19% felt no difference. The average Schirmer II value was 16.6 mm (+/-7.7) in the pro-BSCL subgroup, 14.9 mm (+/-6.4) in the no difference subgroup, and 12.3 mm (+/-7.7) in the contra-BSCL subgroup. There was a female preponderance in the contra-BSCL (39:15) and no difference (15:6) subgroups. A preoperative history of poor contact lens tolerance was recorded in 50% of the contra-BSCL subgroup patients; 41%, no difference; and 33%, pro-BSCL. Postoperative parameters such as first-day UCVA, number of eyes with microstriae, folds requiring stretching, or cases of diffuse lamellar keratitis did not differ significantly. Eyes with flap microstriae had a significantly deeper mean ablation (114.5 microm [range, 52-146 microm]) than eyes without any flap abnormalities (75.4 microm [39-120 microm]). No significant differences were found between the consecutive and simultaneous groups. The majority of patients did not experience better postoperative comfort from the application of a BSCL. Only 27% of patients reported more comfort from postoperative BSCL use. The latter have better tear film characteristics and a history of less difficulty with contact lenses preoperatively. A BSCL does not protect from the occurrence of microstriae.