vitreous humour การใช้

• These can bleed and be attached to the vitreous humour.
• The latter is an anomaly of the vitreous humour, whereby calcium clumps attach themselves to the collagen network.
• The vitreous humour has a viscosity two to four times that of water, giving it a gelatinous consistency.
• The vitreous humour is in contact with the retina and helps to keep it in place by pressing it against the choroid.
• Under ophthalmic examination, toxoplasmic chorioretinitis classically appears as a focal, white retinitis with overlying moderate inflammation of the vitreous humour.
• Ganciclovir is also available in slow-release formulations for insertion into the vitreous humour of the CMV retinitis ( associated with HIV infection ).
• Similarly, the gel may liquefy, a condition known as synaeresis, allowing cells and other organic clusters to float freely within the vitreous humour.
• The polyanionic form, commonly referred to as hyaluronan, is a aqueous and vitreous humour of the eye and in the fluid of articulating joints.
• The vitreous humour contains no blood vessels, and 98-99 % of its volume is water ( as opposed to only 75 % in the cornea ).
• Looking up / down and left / right will cause the floaters to leave the direct field of vision as the vitreous humour swirls around due to the sudden movement.
• The jelly-like substance within the eye ( the vitreous humour ) has a distinctive appearance in the types of Stickler syndrome associated with the COL2A1 and COL11A1 genes.
• The medical examiner's report also made no mention of testing the vitreous humour, the clear gel inside the eyes, which is a standard way to diagnose dehydration.
• With frequent acute incidents, though, additional clinical signs may be seen, including anterior and posterior synechiae, poor pupillary responses, cataracts, and a cloudy appearance to the vitreous humour.
• Cherenkov radiation can be generated in the eye by charged particles hitting the vitreous humour, giving the impression of flashes, as in cosmic ray visual phenomena and possibly some observations of criticality accidents.
• The photoreceptor layer may ( e . g . locusts ) or may not ( e . g . blowflies, dragonflies ) be separated from the lens by a clear zone ( vitreous humour ).
• In birds, the pecten is a vascular structure of complex shape that projects from the retina into the vitreous humour; it supplies oxygen and nutrients to the eye, and may also aid in vision.
• Cherenkov radiation could also be responsible for the " blue flash " experienced in an excursion due to the intersection of particles with the vitreous humour within the eyeballs of those in the presence of the criticality.
• Floaters can be a sign of retinal detachment or a retinal tear but in most cases ( 98 % according to the National Health Service ) it is simply age-related or due to natural change in the vitreous humour.
• The metabolic exchange and equilibration between systemic circulation and vitreous humour is so slow that vitreous humour is sometimes the fluid of choice for postmortem analysis of glucose levels or substances which would be more rapidly diffused, degraded, excreted or metabolized from the general circulation.
• The metabolic exchange and equilibration between systemic circulation and vitreous humour is so slow that vitreous humour is sometimes the fluid of choice for postmortem analysis of glucose levels or substances which would be more rapidly diffused, degraded, excreted or metabolized from the general circulation.