Measurement of corneal temperature

Mapstone, R

doi:10.1016/s0014-4835(68)80073-9

Cited by 145 publications

(75 citation statements)

References 4 publications

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“…The application of infrared thermometry for temperature measurements at the cornea was pioneered by Zeiss [12]and elaborated by Mapstone [9]. With infrared thermometers, the surface temperature is measured by detecting electromagnetic radiation emitted from the surface.…”

Section: Discussionmentioning

confidence: 99%

“…He established that the emissivity of the cornea is 0.97–1.00. Furthermore, because corneal transmission in the infrared area is strongly reduced, and above a wavelength of 3 µm no longer occurs [13, 14], it has been argued that radiation emitted from deeper ocular tissues adds little to the spectrum emitted by the cornea [9, 15]. Consequently, it has been suggested that the cornea can be regarded as a black body radiator.…”

Section: Discussionmentioning

confidence: 99%

“…It was obvious that infrared thermometers had many advantages over other techniques [2]. For example, there is no risk of trauma and contamination, topical anesthesia is not necessary, and the possibility of variation in the temperature readings with pressure application is avoided [9, 10]. Especially, the recently developed THI-500 noncontact infrared thermometer (Tasco Japan, Osaka, Japan) seems very promising with regard to corneal temperature evaluation [5, 11].…”

Section: Introductionmentioning

confidence: 99%

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Variability in the Measurement of Corneal Temperature Using a Noncontact Infrared Thermometer

Koçak

Orgül

Flammer³

1999

Ophthalmologica

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Purpose: To assess the variability of corneal temperature and the reproducibility of its measurement by means of a noncontact infrared thermometer in healthy subjects. Methods: The THI-500 noncontact infrared thermometer (Tasco Japan, Osaka, Japan) was used for the measurement of corneal temperature. The reproducibility of corneal temperature measurements was assessed for 5 consecutive temperature readings obtained within 45 min or within 5 days. In addition, the interocular difference in corneal temperature and the diurnal temperature changes of the cornea were assessed. For each experiment, 10 healthy subjects were recruited. Results: The reliability of 5 consecutive corneal temperature measurements obtained within 45 min and within 5 days was 97.92 and 85.35%, respectively. Interocular differences in corneal temperature were not statistically significant (p = 0.70). Average corneal temperature varied significantly during the day (p < 0.0001), with lower corneal temperature readings during the morning hours compared to those obtained during the afternoon. Conclusion: The assessment of corneal temperature by means of noncontact infrared thermometry is highly reproducible. Corneal temperature varies throughout the day, and this variation is independent of variations in environmental temperature.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Variability in the Measurement of Corneal Temperature Using a Noncontact Infrared Thermometer

Koçak

Orgül

Flammer³

1999

Ophthalmologica

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“…First reports demonstrated that the measurement of the corneal surface temperature may complement the diagnostic tools [9,10,11,12,13]. Ocular surface thermography is a well-known technique for temperature measurement of the anterior eye.…”

Section: Introductionmentioning

confidence: 99%

“…Ocular surface thermography is a well-known technique for temperature measurement of the anterior eye. Modern thermography, pioneered by Mapstone [12], is a non-invasive technique used to measure the surface temperature of an object by detecting the intensity of infrared light that is emitted from the object. Recently, Tomey presented a new non-contact thermographic infrared light device (Tomey TG-1000, Tomey Germany, Erlangen, Germany).…”

Section: Introductionmentioning

confidence: 99%

Dry Eye Symptoms in Patients after Eyelid Reconstruction with Full-Thickness Eyelid Defects: Using the Tomey TG-1000 Thermographer

et al. 2012

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Background: Large full-thickness eyelid defects are conventionally reconstructed by either a Hughes flap or Cutler-Beard bridge flap. Since the structure of the eyelid and its components are necessary for the tear film production and stability, we investigated the outcome after eyelid reconstruction focusing on dry eye symptoms using a new thermographic device, the TG-1000. Methods: Seventeen eyes of patients formerly treated with Hughes flaps (n = 16) and a Cutler-Beard bridge flap (n = 1) were compared to untreated healthy eyes (n = 17) regarding the functional and aesthetic outcome. The follow-up ranged from 3 to 63 months (mean 24.88 ± 17.86). Results: There was no significant difference in Schirmer’s test, break-up time and ocular surface temperature (p > 0.05) between patients after full-thickness eyelid reconstruction and a control group. Eleven patients had minor postoperative complications such as notching of the lid margin (11/17), epiphora (1/17), superficial punctate keratitis (6/17), trichiasis (2/17) and a mild tendency to eversion of the lid margin (6/17). More than 75% of the patients rated their postoperative aesthetic outcome as good or even excellent. Conclusion: The new TG-1000 device is a simple and quick tool for screening of dry eye. This study shows that tarsoconjunctival grafts offer good aesthetic and functional outcome with sufficient tear film composition and stability.

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Relationship Between Corneal Temperature and Finger Temperature

Girardin

Orgül²,

Erb³

et al. 1999

Arch Ophthalmol

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Background: Because the temperature of the body surface depends largely on local blood flow, temperature measurements might provide information on the latter.Objective: To evaluate the relationship between corneal temperature and finger temperature.Methods: Corneal, finger, and body core temperatures were measured in a relatively unselected population of 266 white persons. Excluded were persons taking topical eye medication or with corneal inflammatory signs. Corneal and finger temperatures were measured on 1 randomly selected side of the body by means of a noncontact infrared thermometer. As a measure of body temperature, the tympanic temperature was measured by means of a noncontact infrared ear thermometer. A total of 124 females and 142 males were examined.Results: A correlation analysis in a least squares regression model was highly significant (R = 0.67; PϽ.001), with corneal temperature as the dependent variable and environmental, tympanic, and finger temperatures and age and sex as predicting variables. All variables contributed significantly to prediction of the corneal temperature. The corrected mean corneal temperature after adjusting for environmental, tympanic, and finger temperatures and for age of participants was 0.16°C higher in male participants (P = .002).Conclusions: Corneal temperature correlates with finger temperature even after adjusting for environmental and tympanic temperatures and for the age and sex of participants. A possible cause for these findings are some parallelisms in blood-flow regulation in the finger and the eye.

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Measurement of corneal temperature

Cited by 145 publications

References 4 publications

Variability in the Measurement of Corneal Temperature Using a Noncontact Infrared Thermometer

Variability in the Measurement of Corneal Temperature Using a Noncontact Infrared Thermometer

Dry Eye Symptoms in Patients after Eyelid Reconstruction with Full-Thickness Eyelid Defects: Using the Tomey TG-1000 Thermographer

Relationship Between Corneal Temperature and Finger Temperature

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