You searched for "OCT-A"

158 results found

A new observation point: updating the nomenclature and classification with OCT

The evolution of ophthalmic imaging technologies has been particularly rapid over the last few years. The author provides an update of the current terms for common signs and pathologies observed using optical coherence tomography. My experience as an ophthalmic technician,...

Oct/Nov 2016 Quiz

History A 67-year-old female patient had chronic left canaliculitis becoming painful and more recently complicated by left lower blepharitis. Examination revealed a small fleshy lump on the medial aspect of the left lower eyelid. There was also swelling of the...

Oct/Nov 2015 Quiz

History A 16-year-old female presents with bilateral ocular irritation. The patient has a history of seasonal rhinitis and eczema and complains of itchy eyes, especially during the summer months. Examination shows bilateral mucoid discharge, conjunctival injection and eversion of both...

Oct/Nov 2018 Quiz

History A 37-year-old male was referred from the Emergency Eye Clinic with a swollen right upper eyelid. Symptom relieved with nonsteroidal anti-inflammatory drugs (NSAIDs). The initial clinical diagnosis was dacryoadenitis. The patient presented again six weeks later with 3mm proptosis,...

Oct/Nov 2019 Quiz

History A 62-year-old female patient was referred for rapid growth of a left periorbital soft tissue lesion with proptosis. Her past medical history included: hypertension, hyperlipidaemia and bipolar disorder. On examination: vision in the affected eye was hand movements, right...

Quiz Oct/Nov 2024

History An 83-year-old female was previously treated by surgical excision and plaque brachytherapy for her left conjunctival lesion. She presented to her ophthalmologist with a recurrence some years later and underwent a lid sparing orbital exenteration, which was sent to...

Essentials of OCT in Ocular Disease

Sir Isaac Newton was the first to establish the technique of low coherence white light interferometry. Following on from this, the principle of laser interferometry as an imaging modality for retina was applied by David Huang and his associates in...

Handbook of Retinal OCT

This is not a large colour atlas for optical coherence tomography (OCT) with comprehensive reference lists offering an in-depth description of this popular technology, but an up-to-date pocket or handbag-sized, soft-backed textbook that is likely to become a well-thumbed primer...

OCT in proliferative diabetic retinopathy

This report set out to describe the anatomical relationships between retinal neovascular complexes (NVC), the posterior vitreous, and the vitreoretinal interface in patients with proliferative diabetic retinopathy using spectral domain OCT. The following was recorded for each NVC 1) posterior...

OCT in peripheral corneal thinning

This small retrospective study used high resolution optical coherence tomography (OCT) Heidelberg Spectralis to identify features which could determine the underlying aetiology of peripheral corneal thinning. Ten patients were included; five with diagnoses of degenerative peripheral thinning; Terrien’s marginal degeneration...

OCT imaging of occluded puncta

This is a description of the use of enhanced depth optical coherence tomography (OCT) to see whether a patent ampulla or canaliculus is detectable in patients with absent or occluded puncta. Nine occluded puncta of six patients with epiphora were...

OCT use with macular retinoblastoma

The authors explore the use of portable hand-held spectral domain OCT (SD-OCT) in three eyes of three infants and young children with macular retinoblastoma. All were treated with chemotherapy and all had SD-OCT before and after treatment. The children were...