All posts by Heights Eyecare

Diseases of the Eye

Glaucoma is a disease in which the pressure of the fluid inside the eye is too high, resulting in a loss of peripheral vision.

Blepharitis is an ocular disease characterized by inflammation of the eyelid margins. Blepharitis may cause redness of the eyes, itching and irritation of the eyelids in one or both eyes. Its appearance is often confused with conjunctivitis and due to its recurring nature it is the most common cause of “recurrent conjunctivitis” in older people. It is also often mistaken for “dry eye” by patients due to the gritty sensation that may occur, however lubricating drops do little to improve the condition.

A chalazion is a cyst in the eyelid that is caused by inflammation of a blocked meibomian gland, usually on the upper eyelid. Chalazions differ from styes in that they are usually painless apart from the tenderness caused when they swell up, and in size. A chalazion may eventually disappear on its own after a few months, though more often than not, some treatment is necessary.

Conjunctivitis, commonly called “Pink Eye” or “Red Eye” is an inflammation of the conjunctiva (the outermost layer of the eye and the inner surface of the eyelids), most commonly due to an allergic reaction or an infection.

Dry Eye syndrome (DES),  or simply dry eyes, is an eye disease caused by decreased tear production or increased tear film.

A Pinguecula is a raised, yellowish thickening of the white part of the eye. Excessive sun exposure is a common cause. This condition is usually treated with artificial tears to decrease dryness. Sunglasses are helpful in preventing further growth.

A Pterygium is a growth on the conjunctiv cornea that can cause irregular astigmatism and/or warping of the cornea. If large enough, the growth will block light entering the eye and may lead to vision loss. In severe cases, an outpatient procedure may be considered to remove the tissue.

Keratoconus is a degenerative disorder of the eye in which structural changes within the cornea cause it to thin and change to a more conical shape than its normal gradual curve.
Strabismus  is a condition in which the eyes are not properly aligned with each other.  It typically involves a lack of coordination between the extraocular muscles that prevents bringing the gaze of each eye to the same point in space and preventing proper binocular vision, which may adversely affect depth perception.

A stye is an infection of the sebaceous glands at the base of the eyelashes. While they produce no lasting damage, styes can be quite painful.

A subconjunctival hemorrhage is bleeding underneath the conjunctiva. The conjunctiva contains many small, fragile blood vessels that are easily ruptured or broken. When this happens, blood leaks into the space between the conjunctiva and sclera.

Eye Anatomy

eye anatomyCORNEA: Transparent front segment of the eye that covers iris, pupil, and anterior chamber, and provides most of an eye’s optical power.

PUPIL: Variable-sized, circular opening in center of iris; it appears as a black circle and it regulates amount of light that enters the eye.

IRIS: Pigmented tissue lying behind cornea that (1) gives color to eye, and (2) controls amount of light entering eye by varying size of black papillary opening; separates the anterior chamber from the posterior chamber.

LENS: Natural lens of eye; transparent intraocular tissue that helps bring rays of light to focus on the retina.

RETINA: Part of the eye that converts images into electrical impulses sent along the optic nerve for transmission back to the brain. Consists of many named layers that include rods and cones.

MACULA: Small, specialized central area of the retina responsible for acute central vision.

VITREOUS: Transparent, colorless, gelatinous mass; fills rear two-thirds of the interior of the eyeball, between the lens and the retina.

OPTIC NERVE: Largest sensory nerve of eye; carries impulses for sight from retina to brain.

If You Wear Contact Lenses

Sunglasses are a necessary part of contact lens wear.

Contact lenses improve your appearance and fit your active lifestyle.  However, if you are like most contact lens wearers – you may notice an increased sensitivity to glare and a need for protection against wind and dust.  Whether you have been fitted with contacts for the first time or you’re a long-time wearer, your doctor recommends a complete vision care program that includes the use of polarized sunglasses.

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Is Your Teen Ready For Contacts?

Do you have a teenager at home who suddenly “rebelled” against wearing his or her glasses?  Maybe it’s time to consider contact lenses for your young teen.

If you think about it, contact lenses make sense for teenagers.  Consider this:  if your child has become uncomfortable with glasses, he or she is going to be constantly removing them for school, family photographs, social events, etc.

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