A tadpole pupil (pictured below, right eye) occurs with segmental spasm of the iris dilator muscle producing episodic pupillary distortion, often in the shape of a tadpole. Dr. Stan Thompson of the University of Iowa, Department of ophthalmology, first …

Title: Atlas Entry - Tadpole Pupil Author: brettjohnson Created Date: 9/28/2021 3:07:29 PM

2008年2月8日 · Corectopia is an eccentric location of the pupil. In the photo, the displacement followed an intracapsular cataract extraction. The peripheral iridectomy at 12:30 o'clock did not prevent the occurrence of this infrequent but well-recognized complication of cataract surgery. The peaking of the distorted pupil points to the area of angle pathology.

2010年6月25日 · Baseline pupil diameters before illumination were not significantly different between control and blast injured animals (Ctrl = 2.11 ± 0.05 mm; TBI = 2.11 ± 0.04 mm; p = 0.9914). Analysis of the scotopic maximum combined response revealed no significant difference between control animals (b-wave, 274.5 ± 6.31), and blast-injured animals (427 ...

2013年6月3日 · Dilation of the pupil involves two integrated processes, the relaxation of the iris sphincter and the contraction of the iris dilator. Iris sphincter relaxation occurs when there is supranuclear inhibition of the Edinger-Westphal nucleus at the central nervous system level, predominantly by the reticular activating system in the brainstem.

2008年2月8日 · That usually meant a mature senile catarct. A pure-black pupil due to cataract suggested a nuclear cataract. In India, the cataracta nigra was occasionally seen. Before the use of the slit-lamp the cataracta nigra was frequently not recognized as the cause of the patient's blindness - the pupil appeared to be normally black.

2011年5月24日 · Figure 2: Ultrasound imaging revealed a dense cataract, mild vitreous hemorrhage with a tract-like membrane extending posteriorly, and a highly reflective mobile-appearing opacity lying posteriorly near the optic nerve with shadowing.

2008年2月8日 · The pupil has been dilated. With the pupil undilated, the zonular cataract always fills the entire pupil. In the photo, careful inspection will reveal a pupil area between the edge of the cataract and the iris ruff. A denser zonular/ lamellar cataract that is easily seen - with the pupil dilated, the entire cataract can be seen.

2017年9月21日 · ECCE conversion (short), small pupil incision (1:53) Open-sky extracapsular cataract extraction (ECCE) during penetrating keratoplasty (PKP) "Triple Procedure" (1:58) Complex situations. Zonular weakness Capsular Tension Ring (CTR) Insertion Pearls Using a Sinskey Hook (02:57) Little Fishtail for 'alota' Trauma (3:27)

2008年2月8日 · In the photo, the subluxated, encapsulated nucleus is seen. The scattered subcapsular white dots indicate that there is still some retained cortex. Notice the dark space between the superior border of the shrunken lens and the pupil margin superiorly - an indication of subluxation of the abnormal lens.