Eye Disorders
Chronic high blood sugar can damage the tiny blood vessels at the back of the eye, causing them to leak fluid or bleed, a condition known by this specific medical name.
What is diabetic retinopathy?
This type of lens is thicker in the middle than at the edges and is used in magnifying glasses to converge light ray.
What is a convex lens?
This specific type of contact lens fitting technique uses two different lenses: one eye is corrected for distance vision and other for near vision.
What is monovision?
This transparent structure behind the iris bends light rays to help focus images sharply on the retina.
What is the lens?
The person generally responsible for grinding or duplicating lenses is the:
What is Optician?
Characterized by a localized, progressive thinning and bulging if the cornea into a cone shape, this rare condition distorts vision and often requires specialized rigid or scleral contact lenses.
What is Keratoconus?
This fundamental optical phenomenon occurs when light waves bounce off a smooth surface, like a mirror, and change direction.
What is reflection?
Combining features of two different styles, this type of contact lens has a rigid gas-permeable center for sharp vision surrounded by a soft outer skirt for comfort.
What is a hybrid contact lens?
Often called the “blind spot,” this area is where the optic nerve connects to the retina and contains no photoreceptors.
What is the optic disc?
This primary eyecare doctor examines eyes for vision and health problems, and can prescribe glasses, contact lenses, and eye medicines.
What is an optometrist?
This is the inflammation of the middle layer of the eye, the uveal tract.
What is uveitis?
This specific type of sunglasses uses a special chemical filter to block horizontally oriented light waves, effectively reducing glare from roads and water.
What are polarized sunglasses?
This specialized practice involves wearing rigid contact lenses overnight to temporarily reshape the cornea for clear daytime vision without lenses.
What is orthokeratology or ortho-k?
This tough, white outer layer of the eyeball protects the inner structures and maintains the eye’s shape.
What is the sclera?
This medical doctor (MD) specializes in eye and vision care, can perform eye surgery, and treats complex eye diseases.
What is an ophthalmologist?
This rare, genetic type of eye cancer develops in early childhood from the immature cells of the retina, often detected when white glow shows up in a child’s pupil in flash photographs.
What is retinoblastoma?
This type of lens curves inward, is thinner in the middle, and is prescribed to people with myopia(nearsightedness) to diverge light before it enters the eye.
What is a concave lens?
Sleeping in contact lenses increases the risk of this serious conditio, which is a painful, open sore on the clear front surface of the eye.
What is a corneal ulcer?
This thin, vascular layer lies between the sclera and the retina, supplying oxygen and nutrients to the outer retina.
What is the choroid?
An optometrist is licensed by which governing body:
What is State?
This group of rare, inherited genetic disorders causes a progressive breakdown of cells in the retina, typically starting with night blindness and a loss of peripheral vision.
What is retinitis pigmentosa?
This triangular glass tool can separate white light into its component spectrum of colors by bending each wavelength at a slightly different angle.
What is a prism?
This specific property of a contact lens material, represented by the letters Dk, measures its ability to let oxygen pass through to the cornea.
What is oxygen permeability?
The jelly-like substance fills the large space in the back of the eye and helps maintain its round shape.
What is vitreous humor?
This rare specialist is a trained professional who designs, paints, and fits custom prosthetic artificial eyes.
What is an ocularist?