background: cataract extraction surgery remains the most commonly performed eye surgery by ophthalmologists. the maintenance of mydriasis is required throughout surgery to allow better visualization of the surgical field and a greater working space within the center of the eye. non-steroidal anti-inflammatory agents (nsaids) have their effect in maintaining mydriasis by their ability to inhibit...

purpose: to evaluate pupil dilation with intracameral injection of preservative-free lidocaine 1% during phacoemulsification. methods: this interventional case series included 31 consecutive senile cataract patients scheduled for phacoemulsification and intraocular lens (iol) implantation. pupil dilation was achieved using intracameral preservative-free lidocaine 1% without any preoperative or ...

Explicit reading strategies help low-knowledge readers make the inferences necessary to comprehend expository texts. Self-explanation is a particularly effective strategy, but it is challenging to monitor how well a reader is applying self-explanation without requiring the reader to externalise the self-explanations being generated. Studies have shown that different reading strategies vary in t...

Purpose. To investigate the visual quality after SMILE and Femto-LASIK. Methods. About 123 eyes from 63 patients were enrolled in this study. The parameters were measured preoperatively and 1 week, 1 month, and 3 months postoperatively using Sirius System. Results. The MTF curve increase slightly from low to high frequency at 3 mm and 6 mm pupil diameter after SMILE surgery (P < 0.05) during th...

We investigate the gaze estimation error induced by pupil size changes using simulated data. We investigate the influence of pupil diameter changes on estimated gaze point error obtained by two gaze estimation models. Simulation data show that at wider viewing angles and at small eye-camera distances, error increases with increasing pupil sizes. The maximum error recorded for refracted pupil im...

Purpose: To investigated the effects of pupil dilation on subjective refraction by using ground glass lens. Methods: Forty-two subjects (22.1 ± 1.2 years) participated in the study. We measured the change in pupil diameter during binocular and monocular vision (using an occluder and a ground glass lens). And we conducted subjective refraction test using an occluder and a ground glass lens. Pair...

PURPOSE Pupil size is critical for optimal performance of presbyopic contact lenses. Although the effect of luminance is well known, little information is available regarding other contributing factors such as aging and refractive status. METHODS The cohort population comprised 304 patients (127 male, 177 female) aged 18 to 78 years. Pupils were photographed at three controlled luminance leve...

UNLABELLED Pupillometry provides a simple and noninvasive index for a variety of cognitive processes, including perception, attention, task consolidation, learning, and memory. The neural substrates by which such cognitive processes influence pupil diameter remain somewhat unclear, although cortical inputs to the locus coeruleus mediating arousal are likely involved. Changes in pupil diameter a...