What is a blue dot cataract?
Cerulean cataracts, also known as blue dot cataracts, are developmental cataracts characterized by blue and white opacifications scattered in the nucleus and cortex of the lens. Patients with cerulean cataracts are usually asymptomatic until 18-24 months of age and often do not need them removed before adulthood.
What is Trypan blue used for in cataract surgery?
Trypan blue is used as a surgical aid during cataract eye surgery. It is a blue dye that works by staining a part of the eye called the retinal membrane. This creates a contrast between the different parts of your eye and helps your doctor to see the retinal membrane more clearly.
What instrument is used to remove a cataract?
Available Cataract Surgery Instruments include: Caliper. Speculum Wire. Wescott Scissors.
What is the blue dot in your eye?
Eye floaters (known as floaters) are tiny specks that can be seen in your field of vision – especially when you look at a light-coloured area (such as a blue sky or white wall). They are created when tiny clumps form in the clear, jelly-like substance (the vitreous humour) inside the eyeball.
What is a Mittendorf dot?
The Mittendorf dot, discovered by William Frederick Mitttendorf, is a congenital vascular abnormality which occurs due to an involutional defect of the anterior terminus of anterior hyaloid artery. It manifests as a focal opacity in the infero-nasal aspect of the posterior lens capsule.
How do you use trypan blue?
Mix 1 part of 0.4% trypan blue and 1 part cell suspension ( dilution of cells). Allow mixture to incubate ∼3 min at room temperature. Cells should be counted within 3 to 5 min of mixing with trypan blue, as longer incubation periods will lead to cell death and reduced viability counts.
Is Vision blue the same as trypan blue?
VisionBlue® is the only trypan blue stain for anterior use approved by the FDA. No confirmed adverse events reported since launch in 2004.
What is phaco machine?
A phacoemulsification machine is a device intended to break up and remove lenses of the eye that have cataracts.
What is the new lens for cataract surgery?
The Symfony lens has one elongated focal point to allow distance, mid-range, and some near. Since this design is proprietary, the manufacturer will not go into more detail as to how this elongated focal point is achieved.
What is the latest technology for cataract surgery?
In the field of cataract surgery, the latest advance is a trifocal lens designed to allow cataract patients to see well at all distances — near, mid-range and far — while minimizing the need for glasses.
Why do I see a blue circle?
Blue rings around the iris are caused by cholesterol deposits in the eye. The deposits are actually white or yellowish but can appear blue. This might sound dangerous, but it isn’t. Researchers estimate that this condition impacts anywhere between 20 and 35 percent of people, becoming increasingly likely as you age.
Why do I see red and blue dots?
These perceptions are what scientists call “phosphenes” — the sensation of light that’s not actually caused by light. They can start in the eye or the brain, but the ones you are talking about are usually due to the normal functioning of the retina.
How common is a Mittendorf dot?
Persistence of the hyaloid vascular system is seen in 3% of full term infants and 95% of premature infants. [1] It may be present as Mittendorf’s dot located at the posterior lens capsule or as Bergmeister’s papilla located at the optic disc.
What is Y suture?
The Y sutures demarcate the boundaries between the lens cortex, which is peripheral to the Y sutures, and the lens nucleus, which is within and includes the Y sutures. The anterior Y suture is oriented upright, and the posterior Y suture is inverted.
Why dye is injected in cataract surgery?
Vital dyes are often used in surgical procedures to enhance the visibility of targeted tissues. Some vital dyes used by ophthalmologists include trypan blue, sodium fluorescein, indocyanine green and gentian violet.
What is Hydrodissection in cataract surgery?
HYDRODISSECTION. The term Hydro dissection was coined by Faust in 1984. He described it as injection of fluid to separate the lens nucleus from cortex during a planned extra capsular cataract extraction, to facilitate mobilisation and easy removal of nucleus1.
What does a blue dot cataract look like?
The blue dot (cerulean) cataract develops in childhood and progresses through early life. It has characteristic discrete blue-white, pinhead shaped opacities radiating from the centre of the lens. They are more numerous in the cortex where they may form large cuneiform (wedge-like) shapes in the mid-periphery.
What causes blue dot cataracts (CCA1)?
Type 1 (CCA1; 115660) or ‘blue dot’ cerulean cataracts result from mutations in a gene located at 17q24 but its identity is as yet unknown. Intriguingly, it is located in the same chromosomal vicinity as the galactokinase deficiency gene (GALK1). The lens opacities follow an autosomal dominant pattern of transmission.
How are cerulean cataracts diagnosed?
Cerulean cataracts usually present as bilateral, blue-white opacities that begin to form in the fetal nucleus after birth5. Patients can be diagnosed via slit lamp examination at ages as early as 18 months, which would reveal tiny blue and/or white opacities in the superficial layer of the lens nucleus8.
What are the different types of cataract surgical instruments?
Millennium Surgical can help you compare and reduce cost on cataract surgical instruments, including these styles and features: 1 Cannulas 2 Manipulators – corneal and nucleus 3 Markers – Corneal and Torix Axis 4 Curettes 5 Phaco Choppers 6 Knives – Diamond Knives and General Knives 7 Dissectors 8 Fixation Rings 9 Forceps 10 Hooks