You searched for "photopsia"

398 results found

The extended role of the specialist ophthalmic photographer

The prevalence of certain retinal conditions such as diabetic retinopathy and age-related macular degeneration (ARMD) is projected to grow substantially over the next decades. Estimates for the projected growth in burden on eye services for diabetic retinopathy and neovascular ARMD...

IN FOCUS - Prevention and treatment of blindness worldwide: the story of ‘VISION 2020: The Right to Sight’

The story of blindness and efforts to prevent and treat it cannot be told without going back to the earliest recorded history of blindness. Trachoma was described in ancient Egypt, cataract surgery in India about the fifth century BC and...

Jun/Jul 2017 Quiz

History A 57-year-old female patient presented with gradual painless diplopia over the last six months. Examination revealed restricted upward eye movements and 4mm proptosis which did not increase with Valsalva manoeuvre. Intraocular pressure was normal, no visual defects were noted,...

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,...

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...

Choroidal folds

Choroidal folds are undulations of the choroid, Bruch’s membrane and pigment epithelium, with wrinkling of the overlying retina. They may be idiopathic but can also be caused by a number of different conditions. Case report A 60-year-old male patient was...

Acute dacryoadenitis secondary to COVID-19

Acute dacryoadenitis is defined as the rapid onset of discomfort and swelling of the lacrimal gland, classically giving rise to an S-shaped ptosis [1]. Dacryoadenitis is the most common cause of a painful mass in the lacrimal gland in young...

What's trending Feb/Mar 2019

#smartcaptionglasses #Epson #livetheatre #deaf Here is some good news for the New Year. Epson, a Japanese technology firm, has developed augmented reality glasses, which display captions timed with the actors’ performances [1]. Stage lighting, timing and other stage cues are...

Forward-tilt technique for intraocular pressure measurement in upgaze

The authors suggest a technique to improve the accuracy of measuring IOP in upgaze using Goldmann applanation tonometry. Graves’ ophthalmopathy, also known as thyroid eye disease, is an autoimmune inflammatory condition affecting the orbit and periorbital tissues [1]. It was...

The challenge of chorioretinal folds in virtual eye clinics

Chorioretinal or choroidal folds are parallel striations involving the retina, retinal pigment epithelium (RPE), Bruch’s membrane, and inner choroid [1]. They can arise from compressive stress on these layers, and their presence often serves as a diagnostic marker for underlying...

A practical guide to anisocoria

Anisocoria means the presence of difference in the size of the right and left pupils. It is a sign of an abnormality in the efferent pathway. The first question facing the ophthalmologist is to ascertain if anisocoria is present or...