BACKGROUND Numerous videokeratographic methods are used in the diagnosis of keratoconus. The purpose of this study was to compare the sensitivity and specificity of the KISA% index with the keratometry (K) value, inferior-superior (I-S) value, relative skewing of the steepest radial axes (SRAX), and keratometric astigmatism (AST) indices in 25 patients presenting with bilateral keratoconus. M...

the interval she was being' administered nostrums by a Madari who had caught the cobra (shown in the photograph). They had applied two ligatures one above the wrist and the other below the elbow joint. She was brought to hospital in a state of collapse and complete unconsciousness. The pulse at the wrists was quite imperceptible, temperature 95.5 ?F., perspiration pouring out, corneal reflex ab...

By photographing the corneal reflex in two positions of gaze and measuring the radius of curvature of the cornea it is possible to calculate the radius of rotation of the eye. The measurements obtained in this way showed a high correlation with refraction in a series of 80 eyes. The axial length obtained by this method was about 3 mm greater than that obtained by ultrasonographic or x-ray metho...

Infrared video cameras offer a simple noninvasive way to measure the position of the h u eyes using relatively inexpensive equipment. Several commercial systems are available whic se special hardware to localize features in the image in real time; typically the pupil and the i first Purkinje image (corneal reflex) are tracked, the difference between these two signals giv ng a measure of eye rot...

Photic induced sneeze is a reflex that occurs in certain individuals after exposure to bright light. Cystinosis is an autosomal recessive inborn error of metabolism in which nonprotein cystine accumulates within lysosomes. The pathognomonic ocular manifestation of cystinosis is corneal crystal deposition. We observed photic induced sneezes during ophthalmoscopic examination in five of 19 patien...

The body core temperatures of 31 patients suffering from severe cerebral lesions were measured. Evidence for the existence or nonexistence of circadian rhythms in these patients was found to be associated with diagnosis (acute versus chronic lesions), with the level of consciousness, and with neurological findings (such as best motor response and pupillary reaction), but not with heart rate, co...

This study aims to describe a new universal method identify the relative three-dimensional directions of visual, pupillary, and optical axes eye angles between them using topography elevation data. The was validated in large clinical cohort, ethnical differences were recorded. Topography data collected from 1992 normal eyes 966 healthy participants Italy, Brazil, China. three main defined as fo...

Purpose: To study the clinical profile of patients snake venom ophthalmia presenting to tertiary health care centre. Methods: This was a prospective observational that involved25 with complaining pain, diminution vision, photophobia, conjunctival congestion , chemosis, corneal edema, erosions and anterior chamber reaction. Results: There were 18 males 7 females age group taken 30 75 years. Most...

normal 0 false false false en-us x-none ar-sa background : the aim of this study was to determine the correlation between corneal hysteresis (ch) and the corneal resistance factor (crf), which are both novel methods of analyzing ocular rigidity/elasticity, and various corneal characteristics, mainly corneal volume in normal subjects. methods : this cross-sectional study included 500 normal eyes...