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Herpes zoster ophthalmicus: the essentials

Herpes zoster, also referred to as shingles, is a common infection most typically caused by the reactivation of varicella zoster virus that lies dormant (sometime for decades) in the dorsal root nerve ganglion following primary chickenpox infection [1]. In 10-20%...

Myasthenia gravis presenting with isolated ptosis: a poorly studied subgroup

Investigation into the cause of one isolated symptom or sign can be challenging if that particular sign may be caused by a variety of pathological processes, affecting different tissues, and presenting to different specialties. Unilateral ptosis is a case in...

Long-term open angle glaucoma cohort study

This was a study to estimate the development of open angle glaucoma (OAG) in a screened and re-examined elderly group as compared to an unscreened group during the same time period. The participants comprised of 856 individuals born in 1915...

Lens surgery in patients with lens subluxation misdiagnosed as primary angle-closure glaucoma

Lens subluxation can be caused by many conditions including Marfan syndrome and other hereditary conditions, and blunt trauma. Lens displacement can cause pupillary block and angle closure. This is commonly misdiagnosed as primary angle closure glaucoma (PACG), which can lead...

Screening and adherence to glaucoma care in Enugu, Nigeria

The authors present the findings of a cross-sectional survey of participants diagnosed with glaucoma during free eye screening. A total of 830 participants were screened from two outreaches:182 new glaucoma cases were diagnosed (63 glaucoma and 119 glaucoma suspects). There...

Natural history of optic nerve head drusen in a paediatric population

A retrospective case notes review is presented focusing on children diagnosed with optic nerve head drusen over an eight-year period. Inclusion criteria included cases coded for optic nerve head drusen and / or pseudopapilledema. The aim of the study was...

My Top Five: Red flag presentations all resident doctors must know

Ophthalmic emergencies are time-critical situations where delays in recognition or management can lead to permanent vision loss [1]. For resident doctors and medical students, identifying these red flags can be daunting, especially given the complexity of the eye and its...

Quiz Dec/Jan 2023

History A 35-year-old female presented to the emergency eye clinic with an acutely red, painful, photophobic left eye. She was a contact lens-wearer but denied swimming, showering, or sleeping in her lenses. She resided on a farm and worked as...

Blurred vision post liver transplant: to blame the house cat or not?

This article outlines a case of atypical ocular toxoplasmosis associated with immunosuppression. There were two potential sources of infection in this patient and we describe how we concluded which was the most likely. Case report A 33-year-old female was referred...

Emerging developments in dry eye

An estimated 344 million people worldwide suffer from dry eye [1]. This chronic syndrome is characterised by a vicious cycle of tear film hyperosmolarity, tear instability and corneal stress, leading to increased friction, inflammation, ocular surface damage and decreased visual...

The structure function relationship in glaucoma

Chronic open angle glaucoma (COAG) is the second most common cause of blindness worldwide. It is diagnosed on the basis of three clinical signs, raised intraocular pressure (IOP), visual field (VF) defects and structural changes to the optic nerve head...

Feb/Mar 2017 Quiz

History A 40-year-old male patient presented with a right lower eyelid swelling with gradual enlargement for two months. On examination there was a large lesion apparently involving lid margin, part of palpebral conjunctiva and skin. No other local or systemic...