Peripapillary Retinal Haemorrhages in Wernicke's Encephalopathy Following Bariatric Surgery in a Young Patient.

Wernicke's encephalopathy (WE) is an acute neuropsychiatric syndrome resulting from thiamine deficiency (vitamin B1). It is characterised classically by a triad of ophthalmoplegia, confusion, and ataxia. WE is classically associated with alcoholism but increasingly has been observed due to other causes, particularly in undernourished post-bariatric surgery patients. Herein, we describe a case of WE following laparoscopic sleeve gastrectomy in a young male patient who presented with binocular horizontal diplopia and was found to have preretinal peripapillary haemorrhages. This case raises the awareness that posterior segment findings can occur in WE but have been under-reported previously.

Ocular tropism of coronavirus (CoVs): a comparison of the interaction between the animal-to-human transmitted coronaviruses (SARS-CoV-1, SARS-CoV-2, MERS-CoV, CoV-229E, NL63, OC43, HKU1) and the eye.

PURPOSE: Several studies have reported conflicting results on ocular manifestations and transmission of coronavirus disease 2019 (COVID-19) whose causative virus, SARS-CoV-2, belongs to the coronavirus family, the seventh recognized as a human pathogen and the third causing a severe clinical syndrome. COVID-19 primarily affects the lungs, similar to the other human coronaviruses. Comparing the relation between the animal-to-human transmitted coronaviruses (SARS-CoV-1, SARS-Cov-2, MERS-CoV, CoV-229E, NL63, OC43, HKU1) and the eye may contribute to determining their actual eye-tissue tropism and risk of ocular transmission. METHODS: Literature review was conducted via Pubmed.gov, Google Scholar and medRixv using the following keywords: COVID-19, SARS-CoV-2, SARS-CoV-1, MERS-CoV, CoV-229E, NL63, OC43, HKU1, conjunctivitis, tear swab, ocular expression, ocular symptoms and human angiotensin converting enzyme-2 expression. Studies with lack in methodology were excluded. RESULTS: Sixteen observational studies were selected. The range for detection of viral RNA in tears was 0-8% for SARS-CoV-1 and 0-5.3% for SARS-CoV-2, while no reports were found for other coronaviruses. Ocular manifestations have been reported for NL63 and SARS-CoV-2. Ocular symptoms in the form of conjunctivitis/conjunctival congestion predominantly were detected in 65 (3.17%) out of 2048 reported patients with COVID-19 (range of 0.8-32%). Eye symptoms were not reported for the other coronaviruses. CONCLUSIONS: Data aggregation for coronaviruses shows a relatively low eye-tissue tropism. Conjunctival congestion is an uncommon manifestation of COVID-19 similar to all human coronaviruses' infections. In a low percentage of patients, the virus can be excreted in ocular fluids at different stages of the infection, regardless of positive SARS-Cov-2 throat swab. Albeit high viral loads in ocular tissue seem to have relatively low prevalence, the eye should be regarded as a potential source of infection dissemination for COVID-19.

Multimodal Imaging, Tele-Education, and Telemedicine in Retinopathy of Prematurity.

Retinopathy of prematurity (ROP) is a disease that affects retinal vasculature in premature infants and remains one of the leading causes of blindness in childhood worldwide. ROP screening can encounter some difficulties such as the lack of specialists and services in rural areas. The evolution of technology has helped address these issues and led to the emergence of state-of-the-art multimodal digital imaging devices such fundus cameras with its variable properties, optical coherence tomography (OCT), OCT angiography, and fluorescein angiography which has helped immensely in the process of improving ROP care and understanding the disease pathophysiology. Computer-based imaging analysis and deep learning have recently been demonstrating promising outcomes in regard to ROP diagnosis. Telemedicine is considered an acceptable alternative to clinical examination when optimal circumstances for ROP screening in certain areas are lacking, and the expansion of these programs has been reported. Tele-education programs in ROP have the potential to improve the quality of training to physicians to optimize ROP care.

Ophthalmic Features of Spinocerebellar Ataxia Type 7: A Case Report.

BACKGROUND Spinocerebellar ataxia (SCA) is an inherited progressive neurodegenerative disorder characterized by late-onset cerebellar and brainstem dysfunction. It is an autosomal dominant condition with monoallelic pathogenic expansion in the ATXN7 gene. Patients have neurological deficits, including ataxia and dysarthria. Visual symptoms are the first presenting signs in patients with SCA type 7 (SCA7), including severely affected visual acuity and color vision, ocular motility impairment, and retinal macular degeneration. This is one of the first reports of the existence of keratoconus in a patient with SCA7. Few theories explain this coexistence, including vigorous rubbing of the eyes, and genetic and environmental etiologies. CASE REPORT A 34-year-old man with SCA7 underwent genetic and ophthalmic investigations. Multiple family members of the patient had a positive history of ataxia. He had an abnormal posterior and anterior corneal elevation on Pentacam (Pentacam-Oculus, Optikgeräte GmbH, Wetzlar, Germany) and was eventually diagnosed with keratoconus in both eyes, which is not a known feature of SCA7. Later, he underwent a penetrating keratoplasty in the left eye with no subsequent improvement in vision. No further treatment was offered to the patient due to the guarded visual prognosis caused by the retinal pathology. He continues to have routine follow-ups in the Ophthalmology Clinic. CONCLUSIONS This case reinforces the importance of recognizing the guarded visual outcome in these patients due to the macular degeneration and progressive nature of the disease. Therefore, appropriate and adequate patient counseling about the visual prognosis is essential before proceeding with any ocular surgical interventions.

Late-onset spontaneous Descemet's membrane detachment post penetrating keratoplasty in a patient with congenital glaucoma.

A 27-year-old female presented with a sudden decrease of vision in the left eye (OS). Ocular history included advanced congenital glaucoma and previous (15 years) bilateral penetrating keratoplasty and cyclophotocoagulation (9 months) in the left eye. The patient had microcystic corneal edema and Descemet's membrane (DM) detachment; imaging confirmed the detachment with no detectable breaks. DM re-attachment was attempted with an intracameral air bubble tamponade. The edema improved 10 days postoperatively and the graft became clear. Late-onset DM detachment following keratoplasty can occur in patients with congenital glaucoma with no history of recent trauma or eye rubbing. The exact mechanism is unknown, but transscleral cyclophotocoagulation may have a causative role. Timely treatment with air injection results in successful anatomic outcomes.

Retinal Vasoproliferative Tumor in Ocular Albinism.

BACKGROUND Retinal vasoproliferative tumor (VPT) is a type of ocular vascular tumor that commonly occurs idiopathically and can be associated with secondary ocular diseases. Ocular albinism is an X-linked inherited disease and distinguished from oculocutaneous albinism by less hair and skin involvement. CASE REPORT A 42-year-old man with ocular albinism and moderate myopia presented with a history of insidious decrease in vision in both eyes over a period of months. On examination, the horizontal pendular nystagmus was present and diffuse iris transillumination defects were observed bilaterally. A fundus examination revealed a depigmented fundus with visible choroidal vessels, foveal hypoplasia, and a unilateral, elevated, vascular lesion in the superotemporal aspect of the retinal periphery. Optical coherence tomography of the lesion confirmed the retinal location and fluorescein fundus angiography indicated its vascular nature. B-scan ultrasonography was performed to measure the dimensions of the lesion. CONCLUSIONS Rare retinal VPT has been reported with systemic and ocular associations, but it has never been reported in the literature in association with ocular albinism. Multiple treatment modalities have been described for the tumor, but observation can be considered in the absence of secondary consequences of the VPT. Retinal VPT should be included in the differential diagnosis of any retinal vascular abnormalities in patients with ocular albinism.

Indications for enucleation and evisceration in a tertiary eye hospital in Riyadh over a 10-year period.

BACKGROUND: Enucleation and evisceration are eye removal procedures considered as palliative treatment when all other therapeutic options are exhausted. OBJECTIVE: Describe the causes and histopathological findings leading to enucleation/evisceration, and correlate the clinical findings with the histopathological findings. DESIGN: Retrospective, descriptive study. SETTINGS: Tertiary care hospital, Riyadh, Saudi Arabia. PATIENTS AND METHODS: The medical records of patients who underwent enucleation or evisceration from February 2005 to May 2015 were reviewed. Patients were classified into two categories based on indications of surgery: traumatic and nontraumatic. Causes of ocular injury in the traumatic group were documented, and the histopathological findings were reviewed for the nontraumatic cases. MAIN OUTCOME MEASURE(S): Number of enucleation and evisceration surgeries and their causes and histopathological findings. RESULTS: One hundred ten patients underwent evisceration (n=69, 63%) and enucleation (n=41, 37%). Causes were traumatic in 38 (35%) and nontraumatic in 72 (65%). The median age was 50 years and there were 64 men and 46 women. Postoperative endophthalmitis was the most common indication for surgery (n=24, 21.8%), followed by painful blind eye (n=22, 20%). Ocular trauma was more predominant in men (n=29, 76%) than in women (n=9, 24%), and the leading mechanism of trauma was metallic nail injuries (n=6, 15.8%). In the nontraumatic group, endophthalmitis was the most common histopathological finding (n=25, 34.7%). CONCLUSIONS: The majority of the eye enucleation/evisceration surgeries were due to nontraumatic causes, especially postoperative infections. However, severe eye trauma was still a main indication for this destructive procedure. Guidelines are needed to decrease the incidence/severity of work-related eye injuries and to detect and manage eye infections earlier and more promptly. LIMITATIONS: Retrospective study, in one hospital in one area; therefore, results cannot be generalized.