Photophobia,

Overview 

Photophobia, or lightweight sensitivity, is AN intolerance of sunshine. Sources like daylight, fluorescent lightweight and incandescent lightweight all will cause discomfort, at the side of a desire to squint or shut your eyes. 

Headaches also may accompany light sensitivity. Light-sensitive people generally area unit discomposed only by bright lightweight.
In extreme cases, however, any light can be irritating.

Symptoms

Light sensitivity can also be a symbol of underlying diseases that do not directly have an effect on the eyes, like virus-caused diseases or severe headaches or headache.

Retinal Detachment

Overview

Retinal detachment describes AN emergency situation within which a skinny layer of tissue (the retina) at the rear of the eye pulls off from its traditional position.

Retinal detachment separates the retinal cells from the layer of blood vessels that gives chemical element and nourishment.

The longer retinal detachment goes untreated, the bigger your risk of permanent vision loss within the affected eye.

Symptoms

• Retinal detachment itself is painless.
• But warning signs nearly always seem before it happens or has advanced, such as:
• The unexpected look of the many floaters — little specks that appear to drift through your field of vision
• Flashes of sunshine in one or each eyes (photopsia)
• Blurred vision
• Gradually reduced side (peripheral) vision
• A curtain-like shadow over your visual field

Swelling

A swollen eyelid occurs when there is inflammation or excess fluid (edema) in the connective tissues surrounding the eye. Swollen eyes can be painful and non-painful, and affect both the upper and lower eyelids.

A swollen eyelid may be a symptom of allergies or a sign of a serious eye infection.

• Eye irritation, such as an itchy or scratchy sensation
• Sensitivity to light (photophobia)
• Excess tear production, resulting in watering eyes
• Obstructed vision (depending on the extent of the swelling)
• Redness of the eyelid
• Red eyes and inflammation of the conjunctiva
• Eye discharge, or "mattering"
• Eyelid dryness or flaking
• Pain, particularly when swollen eyelids are caused by infection

Dry Eyes Syndrome

Dry Eyes Syndrome

One of the functions of tears is to keep your eyes lubricated, and when they fail to provide adequate lubrication for the eyes, you are being affected by dry eye syndrome. From your body being unable to produce enough tears to production of low quality tears, there can be a host of reasons behind inadequate lubrication for your eyes.

You can experience stinging or burning sensation when you have dry eyes, which can be experienced under certain situations, such as in an air-conditioned room, while traveling on an airplane or looking at a computer screen for a long time without any breaks.

Signs and Symptoms of Dry Eyes Syndrome

• A burning, scratchy or stinging sensation in eyes
• Eye redness
• Sensitivity to light
• Mucus production in or around the eyes
• Blurred vision
• Eye fatigue
• Issues in wearing contact lenses

Uveitis

Overview

Uveitis is a form of eye inflammation. It affects the center layer of tissue within the eye wall (uvea).

Uveitis  warning signs often come on suddenly and get worse quickly. They include eye redness, pain and blurred vision. The condition can affect one or both eyes.

It primarily affects people ages twenty to fifty, however it's going to also have an effect on kids.    Possible causes of redness ar infection, injury, or AN response or disease.

Many times a cause can't be identified. Uveitis will be serious, leading to permanent vision loss. Early designation and treatment ar necessary to stop the complications of uveitis.

Symptoms

•    Eye with uvea
•    The signs, symptoms and characteristics of uveitis include:
•    Eye redness,
•    Eye pain,
•    Light sensitivity,
•    Blurred vision,
•    Dark, floating spots in your field of vision (floaters),
•    Decreased vision ,
 

Vision Impairments

Overview

 vision impairment refers to when you lose part or all of your ability to see (or vision). The impairment must persist even with the use of eyeglasses, contact lenses, medication, or surgery.

Three Types of Vision Impairments

The types of vision impairments are low visual acuity, blindness, and legal blindness (which varies for each country):

Low visual acuity, also known as moderate visual impairment, is a visual acuity between 20/70 and 20/400 with your best corrected vision, or a visual field of no more than 20 degrees

Legal blindness in the United States is a visual acuity of 20/200 or worse with your best corrected vision or a visual field of no more than 20 degrees.

Symptoms

• Severe, sudden eye pain
• Recurrent pain in or around the eye
• blurred, or double vision
• Seeing flashes of light or sudden bright floating spots
• Seeing rainbows or halos around lights
• Seeing floating "spider webs"
• Seeing a "curtain coming down" over one eye
• Unusual, even painful, sensitivity to light or glare
• Swollen, red eyes
• Changes in the color of the iris
• White areas in the pupil of the eye