PURPOSE To evaluate the influence of the size of the light exposed pupil in one eye on the pupillary light reflex of the other eye. METHOD Using a monochromatic pupillometer, the left eye in each of 10 healthy subjects was exposed to 20 s of monochromatic light of luminance 300 cd/m(2), first red (660 nm) and in a following session, blue (470 nm) light. The consensual pupillary diameter in th...

BACKGROUND Intraocular pressure (IOP) may vary according to the change of ocular conditions. In this study, we want to assess the effect and mechanism of pupil dilation on IOP in normal subjects. METHODS We prospectively evaluated 32 eyes of 32 patients (age; 61.7±8.2 years) with normal open angles under diurnal IOP. IOP was measured every two hours from 9 AM to 11 PM for one day to establish...

Objective. To investigate mydriatic effect of intracamerally injected epinephrine hydrochloride during phacoemulsification and intraocular lens (IOL) implantation. Methods. Eighteen cataract patients for bilateral phacoemulsification were enrolled. To dilate pupil, one eye was randomly selected to receive intracamerally 1 mL epinephrine hydrochloride 0.001% for 1 minute after corneal incision (...

estimates that almost 12 per cent of Fijians have diabetes. Although there are no official figures on the prevalence of diabetic retin-opathy, a complication of diabetes, it is the second most common cause of vision loss after cataract in our hospital in Labasa, Fiji. One of the main problems with treating diabetic retinopathy is that patients remain asymptomatic until their disease is very adv...

PREVious papers (Lowe, 1964a) have remarked that when the pupils of eyes with shallow anterior chambers, narrow angles, and open peripheral iridectomies are dilated with homatropine, a considerable proportion of the eyes with persistently narrow angles develop angle-closure, a consequent fall in outflow facility, and a rise in intra-ocular pressure that may reach the fifties within two hours. W...

Using intracellular recording, we studied how several muscarinic antagonists affected the evoked endplate potentials in singly and dually innervated endplates of the levator auris longus muscle from 3 to 6-day-old rats. In dually innervated fibers, a second endplate potential (EPP) may appear after the first one when we increase the stimulation intensity. The lowest and highest EPP amplitudes a...

PurposeThe aim of this study was to evaluate the changes in prevalence myopia Taiwanese schoolchildren over past few decades and analyze risk factors for myopia.DesignAnalysis 8 consecutive population-based surveys conducted from 1983 through 2017.ParticipantsAn average 8917 (5019–11 656) 3 18 years age were selected using stratified systematic cluster sampling or by probability proportional si...