A membrane called the conjunctiva covers the white of the eye and the underside of the eyelids. If irritated or inflamed, the white of the eye may turn red. Other symptoms may occur as well, as each cause for conjunctival inflammation often appears slightly different.

More than 24 million people in the U.S. wear contact lenses, notes the University of Michigan's Kellogg Eye Center. Contact lens exams are different than examinations for glasses. During a contact exam, the eye is measured and other tests are done to determine the best type and fit of contact lenses.

High eye pressure increases your risk of developing glaucoma and a number of other visual field defects, states the University of Illinois Eye and Eye Infirmary. However, not everyone with high eye pressure develops glaucoma. There are natural ways to help reduce eye pressure.

You probably have suffered some form of mild eye irritation at some point in your life; this inflammation can cause eye redness, watering, pain, blurred vision and sensitivity to light.

Young children and infants can't tell parents about vision problems and, in most cases, when a child has an eye problem from birth, he may not know his eyesight could appear differently.

Levator scapulae weakness can limit your ability to perform common daily activities, such as shrugging your shoulders or carrying heavy items. Strengthening exercises for the levator scapulae might help improve your posture and relieve pain symptoms associated with muscular imbalances.

Several skin conditions may cause the appearance of small red bumps under the eyes. Most of them are not serious, but if your under-eye bumps are accompanied by other symptoms such as itchiness, pain or swelling, or if they get bigger with time, it is best to see a health professional for a diagnosis and treatment.

Hand-eye coordination is a fine motor skill that develops in a series of stages from birth to about 7 years of age.

Many people have “floaters” that pass across their vision periodically. In most cases, floaters do not disrupt vision, but some people may have one or more large floaters that can cause blurriness or block portions of your vision.

Eyelid fluttering or twitching, called myokymia, often starts suddenly and seemingly from nowhere. Lid myokymia generally affects only one eye and should not be confused with blepharospasm, a more forceful closure of the lids, always affecting both eyelids.

When you've entered the realm of what fashion magazines refer to as "older woman" or "mature," the changing texture of your skin can become a beauty concern. Because skin tends to lose moisture as it ages, it may take on a "crepe-y" appearance and influence the eye makeup you choose to wear.

Multifocal contacts are lenses that can help you see both near and far objects. There are two prescriptions built into the single lens and are intended for patients with presbyopia. Presbyopia occurs when individuals over the age of 40 have difficulty seeing objects close up.