Reverse pupillary block with pigment dispersion and elevated intraocular pressure following bilateral phakic intraocular lens implantation.

The authors describe a case of reverse pupillary block with pigment dispersion following sequential phakic intraocular lens (pIOL) implantation for high myopia, in a young female patient. The intraocular pressure (IOP) elevation began 3 weeks postoperatively, for which Nd-YAG laser peripheral iridotomies (PIs) were attempted elsewhere. Despite maximum medical therapy, the IOP was uncontrolled. She was referred to our institute for further management. Examination showed anteriorly displaced iris-pIOL diaphragm, iris pigment dispersion and raised IOP. The PIs were incomplete. Based on clinical evaluation and investigations, we concluded that the excess area of contact of the posterior iris over the pIOL caused a reverse pupillary block and pigment dispersion. The IOPs were controlled by repeating laser iridotomies and with medical therapy. Subsequently, the patient developed a low lens vault leading to bilateral cataract. Sequential explantation of the pIOL along with cataract extraction was performed and her vision was restored.

Clinical Presentation and Treatment Outcomes of Pupillary Block Glaucoma Following Vitreoretinal Surgery.

PURPOSE: To describe the clinical presentation and treatment outcomes of pupillary block glaucoma (PBG) following vitreoretinal surgery (VR surgery). MATERIAL AND METHODS: Retrospective observational study of 6941 patients, who underwent VR surgery at a tertiary eye care centre in South India between January 2015 and December 2019. Amongst them, clinical data of 61 patients who developed PBG were taken for statistical analysis. RESULTS: Mean (SD) age was 53.90 (13.4) years and the incidence of PBG was .87%. Median (IQR) time of onset of PBG following VR surgery was 3.33 (1.1-6.6) months and majority were pseudophakic (75%). PBG resolved with Nd:YAG laser peripheral iridotomy (LPI) alone in 50 (82%) patients, whereas 11(18%) patients required additional interventions like surgical iridectomy, trabeculectomy or diode laser cyclophotocoagulation (CPC) either as a stand-alone procedure or in combination with silicone oil removal (SOR). Mean (SD) intraocular pressure at the onset of PBG was 41.61 (14.5) mmHg, which reduced drastically following LPI to 24.28 (14.9) mmHg which further dropped significantly at 6 months follow up to 20.34 (13.9) mmHg. CONCLUSIONS: Incidence of secondary PBG after VR surgery was .87%, and we observed diabetes mellitus, combined cataract and VR surgery, use of 1000cs SO endotamponade, intraoperative endolaser and multiple VR surgical interventions as common associations. Majority of the patients with PBG after VR procedures resolved with LPI and medical management. Few individuals (18%) required additional laser or surgical intervention for IOP control.

Isolated ectopia lentis with partial anterior dislocation and pupillary block: a case report.

BACKGROUND: Ectopia lentis is the dislocation of the natural crystalline lens and usually presents in the setting of trauma or other systemic diseases. Herein, we describe a case of an otherwise healthy four-year-old boy with isolated ectopia lentis whose partial lens dislocation was captured on a smartphone by the patient's father several days prior. CASE PRESENTATION: A four-year-old boy with no past medical, developmental, or trauma history presented with bilateral partial anterior lens dislocation with pupillary block. Initial ophthalmic evaluation two months prior was notable for uncorrected visual acuity at 20/100 OD, 20/250 OS, bilateral iridodenesis, and partially dislocated lenses inferonasally OD and inferiorly OS on slit lamp. Genetic testing found no abnormalities. Ten months later, the patient developed sudden onset of left eye pain. A dislocated lens and temporarily dilated left pupil were captured on a smartphone by the patient's father. He was evaluated 3 days later after a second episode and found to have hand motion vision OS, a fixed 8 mm left pupil with the crystalline lens subluxed into the pupil space and accompanying intraocular pressure OS of 40 mmHg. The lens was surgically removed with a limited anterior vitrectomy. Four and a half years after surgery, visual acuity was 20/125 OS with aphakic correction. The right eye eventually underwent prophylactic lensectomy and was 20/30 in aphakic correction. CONCLUSIONS: This report presents a unique presentation of isolated ectopia lentis with anterior lens dislocation and pupillary block and illustrates the role of smartphone photography in assisting in the triage of eye emergencies.

Emergency decompressive surgery in patients with transtentorial brain herniation and pupillary abnormalities: the importance of improved pupillary response after osmotherapy and surgery.

OBJECTIVE: The predictors of survival and functional recovery following emergency decompressive surgery in patients with transtentorial brain herniation, particularly those with pupillary abnormalities, have not been established. In this study, the authors aimed to assess the outcome of patients with intracranial mass lesions, transtentorial brain herniation, and nonreactive mydriasis, following emergency surgical decompression. METHODS: A retrospective chart review was performed of all patients with transtentorial herniation and pupillary abnormalities who underwent craniotomy or craniectomy at two trauma and stroke centers between 2016 and 2022. The functional outcome was determined using the modified Rankin Scale (mRS). RESULTS: Forty-three patients, 34 men and 9 women with a mean age of 47 years (range 16-92 years), were included. The underlying etiology was traumatic brain injury in 33 patients, hemorrhagic stroke in 8 patients, and tumor in 2 patients. The median preoperative Glasgow Coma Scale score was 3 (range 3-8), and the median midline shift was 9 mm (range 1-29 mm). Thirty-two patients (74.4%) had bilaterally fixed and dilated pupils. The median time to surgery (from pupillary changes) was 133 minutes (mean 169 minutes, range 30-900 minutes). Eighteen patients (41.9%) died postoperatively. After a median follow-up of 12 months (range 3-12 months), 11 patients (26.8%) had a favorable functional outcome, while 10 remained severely disabled (mRS score 5). On univariate analysis, younger age (p < 0.001), less midline shift (p = 0.049), and improved pupillary response after osmotic therapy (p < 0.01) or decompressive surgery (p < 0.001) were associated with favorable outcomes at 3 months. CONCLUSIONS: With aggressive medical and surgical management, patients with transtentorial brain herniation, including those with bilaterally fixed and dilated pupils, may have considerable rates of survival and functional recovery. Young age, less midline shift, and improved pupillary response following osmotic therapy or decompressive surgery are favorable prognosticators.

Pseudophakic pupillary block after reverse sulcus intraocular lens implantation: A case report.

INTRODUCTION: Reverse sulcus intraocular lens (IOL) implantation can cause serious ophthalmic complications. Even routine ocular examinations can provoke significant consequences. Herein, we present a case of recurrent pupillary capture and pseudophakic pupillary block related to reverse sulcus IOL implantation. CASE REPORT: A 44-year-old man developed a pseudophakic pupillary block after pupil dilation aimed at relieving pupillary capture in an undetected reverse position of the sulcus IOL. The pupillary block was successfully treated with 2% pilocarpine and laser peripheral iridotomywas performed to prevent recurrence. The patient experienced recurrent pupillary capture with decreased vision in the affected eye. IOL exchange was the definite treatment resulting in improved vision and proper positioning of the IOL. CONCLUSIONS AND IMPORTANCE: When the reverse position of sulcus IOL is detected postoperatively, prophylactic laser peripheral iridotomy should be considered to prevent pupillary block particularly when pupillary capture is present. Pharmacologic pupillary dilation should be performed cautiously. Recurrent pupillary capture is possible and IOL repositioning should be considered to prevent further complications.

[Painful anisocoria in a five-year-old child: A rare diagnosis which must not be missed]. / Anisocorie douloureuse chez un enfant de cinq ans : un diagnostic rare à ne pas méconnaître.

Congenital ectropion uveae (CEU) is a rare anomaly of the embryonic development of the anterior segment of the eye. We report the case of a 5-year-old child with an undiagnosed CEU who was treated urgently for an acute angle closure attack. CASE DESCRIPTION: A 5-year-old child was referred urgently for evaluation of anisocoria with mydriasis of the right eye and severe headache. Brain imaging with contrast injection was initially performed in the pediatric emergency department and ruled out central nervous system pathology. The initial examination of the right eye revealed an intraocular pressure (IOP) of 37mmHg, corneal edema, congenital ectropion uveae, mydriasis with pupillary block, a closed angle on gonioscopy, and a clear lens. The examination of the left eye was unremarkable, with no visible CEU. The initial management consisted of medical treatment with topical glaucoma drops and miotics and acetazolamide at 10mg/kg/d. Re-evaluation under general anesthesia showed persistent mydriasis and no resolution of the pupillary block. Filtering surgery was performed in the absence of a complete response to medical treatment, allowing control of IOP without drops and complete regression of the corneal edema. DISCUSSION: CEU is a rare malformation, and pressure complications represent an insignificant proportion of pediatric glaucoma cases. The acute presentation of acute angle closure in this potentially blinding short-term setting, however, makes detection and management difficult in very young children in a great deal of pain. Only one similar case has been reported in the pediatric literature. CONCLUSION: Acute angle closure complicating CEU is exceptional and difficult to diagnose in a pediatric context. Parents of children with this predisposing condition should be informed of the need to consult urgently when clinical signs of elevated intraocular pressure appear.

Temporary Pupil Occlusion and Retrolenticular Air Bubble Injection for Descemet Membrane Endothelial Keratoplasty in Vitrectomized Unicameral Eyes.

PURPOSE: The aim of this study was to describe a surgical method that can be easily and safely performed during Descemet membrane endothelial keratoplasty in patients who had previously undergone pars plana vitrectomy with transscleral fixation of the intraocular lens. METHODS: This report reviewed 2 Descemet membrane endothelial keratoplasty procedures performed in patients with vitrectomized unicameral eyes. The proposed technique is characterized by the temporary suture of the pupillary aperture to block the forward flow of vitreous humor and prevent the abrupt loss of air tamponade due to backward movement of the air bubble into the vitreous cavity. At the same time, another air bubble is injected behind the scleral-fixated intraocular lens to induce forward movement of the iris-intraocular lens diaphragm through buoyancy. Thus, the depth of the anterior chamber is reduced, allowing easier unscrolling of the Descemet membrane endothelial keratoplasty lenticule. RESULTS: Pupil closure and buoyancy of the air bubble allow the anterior chamber to be separated from the inflow of vitreous cavity fluid and maintained adequately shallow. During the keratoplasty, the graft is then easily unscrolled without the support of the capsular diaphragm. Postoperatively, the air bubble is maintained in the anterior chamber for a sufficient period. Nd:YAG laser suture lysis is performed after complete absorption of the air bubble during outpatient follow-up. CONCLUSIONS: Temporary pupil occlusion and retrolenticular air bubble injection provide a stable surgical approach in challenging cases of postvitrectomized unicameral eyes.

Pseudophakic pupillary block after phacoemulsification and posterior chamber intraocular lens implantation: Cause identification and treatment refinement.

BACKGROUND: Pseudophakic pupillary block (PPB) was rare in patients who undergo phacoemulsification and posterior chamber intraocular lens (PCIOL) implantation. Laser peripheral iridotomy was the most reported but ineffective treatment in the literature. METHODS: Retrospective, interventional case series of patients who developed PPB in Taipei Veterans General Hospital from 2017 to 2021. Clinical course, diagnostic methods, treatment and outcomes were recorded and discussed. RESULTS: Four eyes of three patients were documented. All of them had diabetes and diabetic retinopathy. Anterior segment Optical coherence tomography (OCT) of these patients showed an exudative membrane at the peripapillary area while slit lamp image could not provide a clear view due to the severely edematous corneal condition. Laser peripheral iridotomy and yttrium aluminum garnet (YAG) laser aiming to the peripapillary exudation were applied to break the PPB successfully. CONCLUSION: Diabetes mellitus, intravitreal injection and inflammation are crucial risk factors for PPB. Anterior segment OCT can be a useful diagnostic tool for the detection of the peripapillary exudative membrane while corneal clarity is compromised due to high intraocular pressure. In addition to peripheral laser iridotomy, an effective approach to resolve PPB may be the use of the YAG laser to break the exudative membrane.

Innovation Urrets-Zavalia syndrome.

Background: Surgeons often notice unexplained dilation of the pupil following an uncomplicated intra-ocular surgery. No definite line of treatment has been proposed for managing Urrets-Zavalia syndrome (UZS). The authors have previously documented the results of surgical pupilloplasty and have outlined this modality of treatment for cases with UZS. Purpose: To highlight the aspect of development of UZS post-operatively in the eyes following an intra-ocular surgery. Synopsis: The video highlights the aspect of prevalence of the persistently dilated pupil that is non-responsive to topical miotics. Apart from associated glare, these cases often have raised intra-ocular pressure because of appositional closure of the anterior chamber angle. Surgical pupilloplasty pulls the iris tissue centrally, eventually releasing the mechanical blockage and often breakage of the peripheral anterior synechias as demonstrated by intra-operative gonioscopy and anterior segment optical coherence tomography. Highlights: Performing a surgical pupilloplasty can resolve the UZS, and timely intervention can also prevent the development of secondary glaucoma because of fallback of the iris tissue on the structures of the anterior chamber angle. Online Video Link: https://youtu.be/IF_w8dVk5_w.

Etiology of white pupillary reflex in pediatric age group.

Background: Leukocoria means white pupil. Normal pupil appears black in children and adults. The typical red reflex is due to retro-illumination of choroidal vessels reflected via the retina, vitreous humor, crystalline lens, aqueous humor, pupil, and cornea. If there is interference in these structures, it would result in a changed red reflex, or leukocoria. Immediate family members are highly likely to detect the first indicator and the pediatrician or general ophthalmologist is usually the first to be visited. The aim of the study was to find out the prevalence of common causes of white pupillary reflex in children, to undertake early diagnosis and treatment, and to reduce morbidity and death. This study aimed to see how common it is for children to have a white pupillary reflex when they visit a pediatric ophthalmologist. Objective: Determine the incidence of conditions that cause a white pupillary reflex in children who visited Hayatabad Medical Complex Hospital in Peshawar. Materials and methods: This study was carried out in the Ophthalmology unit of HMC Hospital Peshawar, from January 2021 to December 2021. 168 patients were enrolled in the study. We included all patients of up to 10 years and both genders with the above findings. Workup for leukocoria was done to find the exact cause that included fundoscopy, B-Scan, MRI, and CT scans. Examination under anesthesia (EUA) was carried out for uncooperative children for detailed fundus examination. Patient data was recorded and a proforma was made to collect all the necessary information. Family history was taken in detail during this study. Results: The most common cause of aberrant pupillary reflex in children aged 1 to 10 years was cataract, 79.76 percent of patients having it. Retinoblastoma (12.5%), Coats disease (3.5%), retinal detachment (2.9%) and persistent hyperplastic vitreous (PHPV) (1.1%) were other notable causes found. Conclusion: Leukocoria is a critical clinical finding, and if parents or primary care physicians notice it, the patient requires a complete follow-up examination by a pediatric ophthalmologist to determine the etiology.

A rare case of congenital pupillary abnormality: a case report.

BACKGROUND: Congenital anomalies of the pupil are quite varied, including abnormal size, shape, color, response to stimulus, and function. We are here reporting an unusual case presented with the absence of pupillary opening with folds of iris tissue at the center. Only an extremely small pupil (diameter < 0.5 mm) could be observed during the operation. CASE PRESENTATION: A 15-year-old male patient visited our outpatient clinic due to vision difficulty in his right eye for more than ten years. The best-corrected visual acuity was 2.0 logMAR and 0 logMAR for the right and left eye, respectively. There were amblyopia, astigmatism and constant exotropia in his right eye. Ophthalmic examination of the right eye showed flat iris root, minimal iris pigmentation, and the pupil area was entirely covered by iris tissue. Lens status and fundus evaluation could not be commented. The left eye was found to be within normal limit. Based on ophthalmic examination, the admission diagnosis was given as acorea. Pupilloplasty was performed on the right eye due to the situation that the iris tissue blocked the visual axis, which led to visual impairment and stimulus deprivation amblyopia. However, an extremely small pupil at the center of his pupillary area was observed during the operation. The postoperative course was favorable, and a normal pupil was secured. Hospital discharge diagnosis was given as microcoria, and amblyopia treatment was followed. CONCLUSIONS: We report a rare case of congenital pupillary abnormality. The further diagnosis was given as microcoria, which should be differentiated from acorea. For this kind of pupil disorder which blocks the visual axis, early diagnosis and treatment can help prevent the development of stimulus deprivation amblyopia.

Surgical significance of prolonged fixed and dilated pupils in a case of non-traumatic, spontaneously regressing, acute subdural haemorrhage.

Bilaterally fixed and dilated pupils (BFDP) in traumatic acute subdural haematoma (ASDH) patients represent an ominous sign that portends irreversible brainstem injury and death. Whether patients with spontaneous ASDH and BFDP follow similar outcomes is unknown. We present a mid-60s man, found unconscious, with a Glasgow Coma Scale (GCS) of 4 following 8 days of headaches. Emergency CT imaging demonstrated a large right ASDH and the patient exhibited BFDP for >3 hours despite sedation and mannitol. Neurological improvement and spontaneously reduced SDH thickness were observed 10 hours postadmission, and he was later transferred for craniotomy and ASDH evacuation. His long-term outcomes were good: achieving independence in his activities of daily living and a GCS of 15. To the best of our knowledge, this is the first reported patient with a spontaneous, regressing ASDH and prolonged BFDP who clinically improved. This case raises important questions regarding factors used to determine prognosis and surgical viability for ASDH.

Ocular complications secondary to diode laser-assisted eyebrow epilation.

We describe two cases of ocular complications secondary to Diode laser assisted eyebrow epilation. Both included patients were women who underwent an eyebrow epilation procedure with Diode laser. A few hours after the procedure they started complaining with photophobia and blurred vision. They were diagnosed with anterior acute uveitis and treated with topical steroids and mydriatics. During the follow-up the presence of sequelae derived from the laser procedure (mydriasis and corectopia in both patients, cataract in the second one) was confirmed. Laser hair removal of the eyebrows can induce irreversible eye damage. Complete and reliable information regarding the potential side effects of this procedure and proper use of appropriate safety devices is mandatory. We point out the importance of the potential ocular side effects associated with these cosmetic devices.

Urrets-Zavalia syndrome following cataract surgery in dogs: A case series.

Background: In human medicine, Urrets-Zavalia syndrome (UZS) is a well-recognized but uncommon postoperative complication characterized by a fixed dilated pupil, accompanied by iris atrophy and glaucoma. Although it was originally reported in 1963 after penetrating keratoplasty surgery for keratoconus, it has been associated with various ophthalmic procedures such as cataract surgery. The condition has not been previously published in the veterinary literature. Case Description: Three client-owned diabetic dogs that developed UZS´s triad after cataract surgery are described. Despite uneventful phacoemulsification in the six eyes, five developed moderate-to-severe postoperative ocular hypertension. Although intraocular pressure (IOP) spikes were initially controlled, fixed dilated pupils accompanied by iris atrophy and chronic ocular hypertension were seen in the five affected eyes. Aggressive medical and surgical management maintained vision in three of those eyes. In one eye, uncontrolled IOP led to blindness. Conclusion: This is the first published description of UZS in dogs, occurring after phacoemulsification. Although no exact, demonstrable causative element could be determined, we believe that should be considered a triggering condition for this syndrome, as it directly affects the ocular blood flow autoregulation and intrinsic uveal tissue integrity. Until the contrary is proved, diabetes mellitus might be considered as a risk factor for developing this syndrome after cataract surgery in dogs.