The glaucoma suspect: differentiation of the future glaucomatous eye from the non-glaucomatous suspect eye. 1. Ultrasonic measurements and eye-wall stress.
We examined the eyes of a group of patients entered into and still continuing in a glaucoma suspect study. Over time, some remained unchanged while others developed chronic open-angle glaucoma (COAG). By comparing the data obtained by ultrasonic measurement of the axial length (A) and central corneal thickness (CCT), along with measurement of intra-ocular pressure (IOP) from these patients and normal control subjects, we found no differences. However, by combining these factors in a calculation of eye-wall stress we found a significant difference between the glaucoma suspect and the future glaucomatous eye.
Chisholm
I A
IA
Department of Ophthalmology, University of Saskatchewan, College of Medicine, Saskatoon, Canada.
Drance
S M
SM
Chauhan
B C
BC
D000328:Adult; D000368:Aged; D003315:Cornea / Q000033:anatomy & histology; D005123:Eye / Q000033:anatomy & histology; D005902:Glaucoma, Open-Angle / Q000175:diagnosis*; D006801:Humans; D007429:Intraocular Pressure; D008875:Middle Aged; D009798:Ocular Hypertension / Q000175:diagnosis*; D014065:Tonometry, Ocular; D014463:Ultrasonography