Ptosis
Ptosis (TOE-sis) refers to an upper eyelid that droops and can occur in children or adults. The droop may be hardly visible, or it could cover the entire pupil. Depending on the severity of the droop, it could interfere with vision. People with ptosis may try to lift the eyelids or tilt their heads back […]
Red Eye
The redness associated with “red eye” is usually caused by dilated or swollen blood vessels. As a result, the surface of the eye looks bloodshot. In contrast to vision problems or pain in the eye, red eye is often less of a concern. However, there are times when red eye may be a sign of […]
Sleep in the Eyes (Eye Discharge)
Sometimes referred to as “sleep” or eye matter, eye discharge that appears in normal consistency upon waking is a typical part of your body’s defense mechanisms, protecting your eyes from bacteria or other irritants. Eye discharge that appears in abnormal consistency, color, or quantities might be a sign of a more serious condition and should […]
Swollen Eyelids
Swollen eyelids are a fairly common eye condition caused by inflammation or excess fluid in the connective tissues surrounding the eye. Depending on the cause, swollen eyelids can be painful or not painful and affect the upper eyelid, the lower eyelid, or both. Swollen eyes can be caused by many different factors, including allergies, styes, […]
Tearing
Suffering from watery eyes, also known as tearing, or epiphora, is a condition that happens when the eyes make too many tears or produce them constantly. There are many causes of excessive tearing, but only a few are signs of more serious conditions. Causes of Excessive Tearing One of two things often causes excessive tearing. […]
Eye Perception
Visual perception refers to a set of skills used to collect and interpret visual information taken in from our environment. The visual information gathered is combined with our other senses, allowing us to derive meaning from what we see. Through the process of merging visual data with our other senses, we are also able to […]
Binocular Vision
The human visual system is a complex network including the eye, ocular nerves, and key brain areas that process visual information. Under most circumstances, we use information from both eyes to create a single visual image. This ability to converge information from both eyes is called binocular vision. In some cases, the eyes fail to […]
Eye Anatomy 101
The eye has many parts that work together to create vision. The eyes themselves are only part of “seeing.” The brain is also involved. The eyes, though, begin the complex process of vision by gathering, focusing and passing on visual information to the brain. To help you learn how the eye works, here is a […]
Technology and Vision
The primary sufferers of technology-related eyestrain used to be adults whose work involved computers. Now, however, people of all ages use computers, smartphones, tablets and gaming devices, which can take their toll on the eyes. As people’s reliance on technology grows, so does the incidence of eyestrain. Keep reading to learn more about digital eyestrain […]
Eye Coordination
Each eye picks up a slightly different image, but through a process called fusion, the brain blends the images together to make one three-dimensional picture. Good eye coordination is needed, however, and allows the eyes to sustain proper alignment so that they can focus on practically the same image, though it is seen somewhat differently. […]