Mobility spectacles for ankylosing spondylitis.
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Adult↗
Biomedical subjects
J K Storey
Publications and source records attributed to J K Storey.
Traumatic myopia; an ultrasonographic and clinical study.
Three patients with transient myopia following blunt injury are described with the aid of serial ultrasonography. The cause of refractive change is an increase in the anteroposterior thickness of the crystalline lens, which probably results from oedema of the ciliary body.
Adolescent↗
Ultrasonic measurement of transverse lens diameter during accommodation.
A new method is introduced which makes possible in vivo measurement of transverse lens diameter (T.L.D.) with ultrasound. The horizontal T.L.D. was measured for 7 nearly emmetropic subjects at accommodation stimulus levels of 0,2,4,6 and 8 dioptres. The unaccommodated T.L.D. was found to be proportional to the axial length. The mean unaccommodated T.L.D. was found to be larger than in vitro measurements reported in the literature.
Accommodation, Ocular↗
Ultrasound--a research tool in the study of accommodation.
Measurements of the globe were made at different stages of accommodation with Kretz A-mode ultrasonic equipment. A comparison between the movement of the crystalline lens in two refractive groups appeared to show that the highly myopic lens had to expand more per dioptre of accommodation; in other words, it was less efficient than the near-emmetropic lens. Also the posterior surface of the lens appeared to move more in highly myopic eyes than in near-emmetropic eyes.
Accommodation, Ocular↗
The prediction of glaucoma from ocular biometric data. Part 2. An evaluation.
A method of glaucoma prediction from ocular biometric data has been described previously. A study was undertaken to evaluate the performance of the existing multiple regression equations (prediction systems) on data obtained from an independent sample consisting of 22 angle-closure glaucoma, 29 open angle glaucoma and 44 normal subjects. This performance, found by comparing the predicted and actual classification for this sample, was such that between 2 and 7% false positives and 12 and 27% false negatives were found on the equations differentiating glaucoma from normal subjects; and between 14 and 27% false positives, with 10 to 14% false negatives on the equations classifying the glaucoma subjects as angle-closure or open angle. From these results the efficiency of glaucoma prediction from ocular biometric data would appear to be equal to that of the combined tonography and provocative tests, provocation with corticosteroids and visual field screening.
Anthropometry↗