Ocular surface temperature: A 3D FEM prediction using bioheat equation

Ng, E. Y. K.; Ooi, E. H.

doi:10.1016/j.compbiomed.2006.08.023

Cited by 54 publications

(34 citation statements)

References 11 publications

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“…Finite element analysis on human eye has shown that, the centre of the corneal surface has the lowest temperature [94]. However, experimental studies showed that the coolest point on the cornea is slightly inferior to the geometric centre of cornea [36,44,55], and this observation was evident in most of the normal subjects [44].…”

Section: Discussionmentioning

confidence: 99%

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Infrared thermography on ocular surface temperature: A review

Tan

Acharya

et al. 2009

Infrared Physics & Technology

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183

104

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Section: Discussionmentioning

confidence: 99%

“…The presence of eyelid has made the isotherms as an elliptical shape, instead of a circular shape [94].…”

Section: Discussionmentioning

confidence: 99%

Infrared thermography on ocular surface temperature: A review

Tan

Acharya

et al. 2009

Infrared Physics & Technology

Self Cite

183

104

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“…Interested reader can find the summary of the steady state values of corneal surface temperatures, obtained by using a various techniques, in the work by Ng and Ooi [38]. The reported values range from 32 to 36.6 • C, with the mean value at 34.66 • C.…”

Section: The Steady State Resultsmentioning

confidence: 99%

Fetd Computation of the Temperature Distribution Induced Into a Human Eye by a Pulsed Laser

Cvetković¹,

Poljak²,

Peratta³

2011

PIER

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Abstract-In this paper we present the three-dimensional finite element time domain model of the human eye exposed to pulsed holmium: YAG laser radiation used in thermokeratoplasty procedure. The model is based on the Pennes' bioheat transfer equation and takes into account the focusing action of the lens. The absorption of laser energy inside the eye tissues is modeled using the Lambert-Beer's law. Model takes into account the pulse temporal profile. The maximum temperature values obtained from steady state and transient analysis are compared against those reported from other papers. Finally, sensitivity analysis of several parameters on the calculated temperature field is carried out.

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“…Hirata (2007) performed steady state simulation on the effect of microwave radiation on human eye using an improved numerical model of the irradiated eye. Ng et al (Ng and Ooi, 2006;Ooi et al, 2007) reported steady state simulation of a two-dimensional model of the eye, which was followed by a three-dimensional model by Ng and Ooi (2007). In the present study, multi-spot retinal laser surgery is numerically simulated using a truncated three-dimensional model of the human eye and flat-top laser beam.…”

Section: Introductionmentioning

confidence: 95%

Bio-Heat Transfer Simulation of Square and Circular Array of Retinal Laser Irradiation

Narasimhan¹,

Jha²

2011

Frontiers in Heat and Mass Transfer

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Pan Retinal photocoagulation (PRP), a retinal laser surgical process, is simulated using a three-dimensional bio-heat transfer numerical model. Spots of two different type of array, square array of 3 × 3 spots and a circular array of six spots surrounding a central spot, are sequentially irradiated. Pennes bio-heat transfer model is used as the governing equation. Finite volume method is applied to find the temperature distribution due to laser irradiation inside the human eye. Each spot is heated for 100 ms and subsequently cooled for 100 ms with an initial laser power of 0.2 W . Based on the outcome of temperature distribution, the laser is pulsated in subsequent simulations to reduce the average peak temperature of spots to minimize the temperature induced cell damage. A method to reduce the laser power to attain the peak temperature towards photocoagulation temperature (60• C) is also presented.

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Ocular surface temperature: A 3D FEM prediction using bioheat equation

Cited by 54 publications

References 11 publications

Infrared thermography on ocular surface temperature: A review

Infrared thermography on ocular surface temperature: A review

Fetd Computation of the Temperature Distribution Induced Into a Human Eye by a Pulsed Laser

Bio-Heat Transfer Simulation of Square and Circular Array of Retinal Laser Irradiation

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