Light scatter from the central human cornea

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Abstract

Light scatter from the central human cornea was measured in 60 eyes of 60 patients using computerised image analysis of Scheimpflug slit image photographs. There was no correlation between the amount of scatter and the age of the patients (correlation 0.035, p = 0.79). In addition it was found that light was scattered more at the anterior and at the posterior surfaces of the cornea than from the stroma.

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Biophysical aspects of corneal and lenticular transparency.

S LERMAN (1984)

The chemical composition and morphology of the cornea and lens can provide significant information regarding what wavelengths of nonionizing radiation these two tissue should absorb and transmit. Such data, including a variety of parameters determined by biophysical techniques, can provide us with information regarding the molecular basis for corneal and lenticular transparency and the subtle changes occurring with aging and ambient radiation exposure during our lifetime. The biophysical approach (fluorescence and NMR spectroscopy) has already provided new clinical tools for studying and delineating the initial events responsible for eventual opacification in these two tissues, months to years before they become manifest by current conventional clinical methods of examination.

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Corneal transmission in whole human eyes.

J. Van Best, J Bollemeijer, C C Sterk (1988)

The transmission of blue-green argon laser light (lambda = 488 nm and lambda = 514.5 nm) through clear healthy corneae was measured by means of a photodiode implanted into whole human donor eyes. The mean corneal transmission in seven eyes (donor age: 32-84 y) was 93.2 +/- 3.2% S.D., range 87-98%. The time between death and measurement ranged from 3.5 to 16 hr. These results indicate that hardly any correction for light loss in a healthy cornea is required in fluorophotometric results obtained with the use of fluorescein (lambda max.exc. = 489 nm, lambda max.em. = 514 nm).