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A bone-anchored hearing aid (BAHA) or bone-anchored hearing device,is a type of hearing aid based on bone conduction. It is primarily suited for people who have conductive hearing losses, unilateral hearing loss, single-sided deafness and people with mixed hearing losses who cannot otherwise wear 'in the ear' or 'behind the ear' hearing aids. They are more expensive than conventional hearing aids, and their placement involves invasive surgery which carries a risk of complications, although when complications do occur, they are usually minor. Two of the causes of hearing loss are lack of function in the inner ear(cochlea) and when the sound has problems in reaching the nerve cells of the inner ear. Example of the first include age-related hearing loss and hearing loss due to noise exposure. A patient born without external ear canals is an example of the latter for which a conventional hearing aid with a mould in the ear canal opening would not be effective. Some with this condition have normal inner ear function, as the external ear canal and the inner ear are developed at different stages during pregnancy. With normal inner anatomy, sound conducted by the skull bone improves hearing.
rostbite refers to the freezing of body tissue (usually skin) that results when the blood vessels contract, reducing blood flow and oxygen to the affected body parts. Normal sensation is lost, and color changes also occur in these tissues.
Ophthalmoscopy - Eye Clinical Examination - OSCE - Dr Gill
Direct Ophthalmoscopy use of the eyes is a very challenging clinical skill, incorporating both the examiner's knowledge of the retina, but also understanding the use of the ophthalmoscope
In this clinical skills tutorial, we look at the use of the direct ophthalmoscope as part of an ophthalmic examination
it should be noted that in the ideal circumstances, the room lights will be dimmed during the examination, and dilating eye drops used to improve the visualisation of the fundus
Some people may notice an ASMR effect from this clinical examination
#DrGill #Ophthalmoscopy #ClinicalSkills #EyeExam
3D scans show still pictures of your baby in three dimensions. 4D scans show moving 3D images of your baby, with time being the fourth dimension. It's natural to be really excited by the prospect of your first scan. But some mums find the standard 2D scans disappointing when all they see is a grey, blurry outline.
With keratoconus, the clear, dome-shaped tissue that covers the eye (cornea) thins and bulges outward into a cone shape. Its cause is unknown. Symptoms first appear during puberty or the late teens and include blurred vision and sensitivity to light and glare. Vision can be corrected with glasses or contact lenses early on. Advanced cases may require a cornea transplant.