Association Between Ocular Surface Temperature and Tear Film Stability in Soft Contact Lens Wearers

Itokawa, Takashi; Okajima, Yukinobu; Suzuki, Takashi; Kakisu, Koji; Iwashita, Hiroko; Murakami, Yoshitaka; Hori, Yuichi

doi:10.1167/iovs.17-23173

Cited by 16 publications

(22 citation statements)

References 28 publications

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“…A decrease of the order of 0.5°C was also found in a study performed over a model eye with 3 materials (lotrafilcon A, balafilcon A and etafilcon A) [31]. Itokawa et al found lower differences that were not significant [11]. They published results with a silicone hydrogel material (delefilcon A) that showed differences of 0.15 ± 0.33°C between the baseline situation and 15 min of contact lens wear in a video register of 10 s. The current results suggest that the pre-lens ocular surface temperature does not change over time.…”

Section: Discussionmentioning

confidence: 62%

“…Another important aspect to consider during contact lens wear is tear film stability. The current study not only asses this parameter from a traditional perspective, through non-invasive tear break-up time [10], but also from a recently suggested new approach in which ocular surface temperature is obtained using infrared thermography [11].…”

Section: Discussionmentioning

confidence: 96%

“…It is generally accepted that the physical presence of a contact lens disrupts the normal tear film structure, in particular the lipid layer, and that this facilitates a more rapid loss of tear fluid by evaporation. [2] It has therefore been proposed that the measurement of ocular surface temperature before and during contact lens wear can be used as an index of tear film stability [11]. It seems that the greatest ocular temperature changes observed occur when measurements are taken immediately after contact lens insertion, and that the effect is greater with silicone hydrogel lenses than with conventional hydrogel [28].…”

Section: Discussionmentioning

confidence: 99%

“…These can be carried out with current technology, that allows the objective and reliable assessment of changes in the ocular surface, such as ocular redness [9] and tear film stability [10]. Furthermore, recently it has been published that there is an association between ocular surface temperature and tear film stability in wearers of soft contact lenses [11], suggesting that ocular surface temperature measurements can be used to evaluate tear film stability in soft contact lens wearers.…”

Section: Introductionmentioning

confidence: 99%

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Randomized crossover trial of silicone hydrogel contact lenses

García-Montero

Rico-del-Viejo

Llorens‐Quintana

et al. 2019

Contact Lens and Anterior Eye

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The aim of the current study is to assess, using new technologies, the interaction of four monthly silicone hydrogel contact lenses on the ocular surface and the comfort over 15 days of use. Methods: Prospective cross-over, randomized and double-masked study including four materials (lotrafilcon-B, samfilcon-A , comfilcon-A and filcom-V3). Clinical examination was performed in the following order: tear meniscus height, first break-up of the tear film, the average time of all tear film breakup incidents, bulbar redness, limbal redness (Keratograph 5M ,Oculus, Germany); central corneal thickness (Pentacam, Oculus, Germany), thermography values (FLIR A325; FLIR Systems Inc., USA), and slit-lamp evaluations, including ocular surface staining. Finally, subjective comfort was obtained from Contact Lens Dry Eye Questionnaire-8. Results: The impact of contact lens wear on the ocular surface didn't show statistically significant changes over time except for corneal and conjunctival staining grades on day 15 compared to day 1 for the comfilcon A group (P = .003 and P = .01, respectively). Contact lens stability and impact on the ocular surface during contact lens wear didn't show statistically significant changes over time except in the case of the comfilcon A material with respect to the irritation item (P = .01). Conclusions: These results suggest that the impact of monthly silicone hydrogel contact lens materials on the ocular surface after and during contact lens wear, contact lens stability over time, and subjective comfort did not reveal any significant changes over 15 days of use for any of the materials.

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Section: Discussionmentioning

confidence: 62%

Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Randomized crossover trial of silicone hydrogel contact lenses

García-Montero

Rico-del-Viejo

Llorens‐Quintana

et al. 2019

Contact Lens and Anterior Eye

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“…Many researchers have reported that the changes in corneal temperature are correlated significantly with the tear film stability [ 6 , 7 ]. We also reported the correlation in patients who wear soft contact lens and after cataract surgery [ 8 , 9 ]. Numerous studies have reported that the corneal temperature varies with age [ 10 ], blinking [ 6 , 11 ], tear film thickness [ 12 ], and external temperature [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Correlation between Blood Flow and Temperature of the Ocular Anterior Segment in Normal Subjects

et al. 2020

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Purpose: To determine a correlation between temperature and blood flow in the ocular anterior segment, and their effects on corneal temperature. Methods: In experiment 1, we recruited 40 eyes and measured the temperature and blood flow in the ocular anterior-segment (upper/lower eyelid skin, palpebral and bulbar conjunctiva, and cornea) before and after application of warm compresses. In experiment 2, we recruited 20 eyes and measured the same tissues before and during stimulation using water and capsaicin solution in the oral cavity. Results: In experiment 1, the temperatures of the upper/lower eyelid skin and cornea increased significantly until 15 min after the application of the warm compress; the temperatures of the palpebral and bulbar conjunctiva increased significantly until 10 min. The blood flow in the upper/lower eyelid skin and bulbar conjunctiva increased significantly until 10 min, and that of the palpebral conjunctiva increased significantly until 15 min. In experiment 2, the temperatures were correlated significantly with the blood flow in the upper and lower eyelid skin and palpebral and bulbar conjunctiva. The temperature of all locations and palpebral conjunctival blood flow contributed independently to the corneal temperature. Conclusions: In the ocular anterior segment, the temperature and blood flow were correlated significantly, and contributed to the corneal temperature.

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Association between dryness sensation and ocular surface temperature and conjunctival blood flow in soft contact lens wearers

Itokawa,

Okajima,

Iwashita

et al. 2024

Contact Lens and Anterior Eye

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Association Between Ocular Surface Temperature and Tear Film Stability in Soft Contact Lens Wearers

Abstract: The changes in OST over SCLs are related to tear film stability. Measurements of OST can be used to evaluate tear film stability for SCL wearers.

Cited by 16 publications

References 28 publications

Randomized crossover trial of silicone hydrogel contact lenses

Randomized crossover trial of silicone hydrogel contact lenses

Correlation between Blood Flow and Temperature of the Ocular Anterior Segment in Normal Subjects

Association between dryness sensation and ocular surface temperature and conjunctival blood flow in soft contact lens wearers

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