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PUK after corneal crosslinking

This retrospective study aimed to report the incidence, characteristics, clinical presentations, risk factors, and the available treatment modalities of sterile peripheral ulcerative keratitis (PUK) post-corneal collagen crosslinking (CXL). In total 771 eyes of 474 patients operated for keratoconus or ectasia...

FAQs about cerebral visual impairment (CVI): identifying and helping those affected

Cerebral visual impairment is common in both adults and children, yet the diagnosis can easily be missed unless one is tuned into the presenting features. This article provides a succinct introduction to this important topic. What is vision? Vision is...

The refractive index in the eye lens – implications for clinical practice and optical design

The eye may appear to be a comparatively simple organ and yet its optical system is complex and continues to be a source of investigation and research. The major optical elements are considered to be the cornea and the lens...

Outcomes of early versus late surgery for infantile esotropia

The authors aimed to provide a better understanding of the clinical spectrum of infantile esotropia by comparing motor and sensory results in the long-term follow-up of patients who underwent surgery. This was a retrospective review over a 17-year period. There...

Does Acanthamoeba need bacteria to cause keratitis?

An animal study was carried out on 36 rabbits, whose corneas were inoculated with either Acanthamoeba castellanii alone, Pseudomonas aeruginosa alone or both pathogens together after a period of short (two hours) or long (six hours) co-incubation. The clinical severity...

Preventing refractive surprises by real time biometry during cataract surgery

A few months ago a retired lady presented for second eye cataract surgery. I noted on the pre-op ward round that the outcome of her first eye’s surgery looked like a refractive surprise as her spherical equivalent in that eye...

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...

Disseminated cutaneous zoster – a masquerade

Reactivation of varicella zoster infection in the elderly commonly presents to ophthalmologists as herpes zoster ophthalmicus (HZO), affecting the Va trigeminal dermatome. In patients with impaired immunity, zoster infection occurs with increased severity and may be complicated by visceral and...

Quiz Feb/Mar 2024

History A 21-month-old boy presented to his local ophthalmology department with a left proptotic eye from a growing cystic lesion known to be present from birth. Notes taken on presentation were: Known left microphthalmia with chorio-retinal coloboma, contralateral eye was...

Principles of contact lens fitting in keratoconus

Keratoconus is an ectatic condition of the cornea characterised by progressive conical distortion with irregular astigmatism, myopia and apical protrusion. Most cases progress slowly resulting in varying degrees of myopic astigmatism. Management of keratoconus includes spectacles, soft contact lenses, a...

Ophthalmic learning through the lens of cognitivism and constructivism

Learning in ophthalmology is multi-faceted, from understanding the fundamentals of eye anatomy and physiology to higher order skills such as performing cataract and vitreoretinal surgery. Having a strong foundation in the basics is a necessity for higher order knowledge synthesis,...

Problems in Periorbital Surgery: A Repair Manual

This is a multi-author textbook directed at oculoplastic and plastic surgeons carrying out and managing aesthetic eyelid surgery. The authors are well-known and commonly cite their mentor, Clinton (“Sonny”) McCord as the main inspiration behind the textbook. Each section contains...