Ophthalmic conditions are diseases of the eye. They can affect various parts of the eye and even impair structures immediately surrounding it. Eye health problems can develop quickly or gradually. Some last a few days to months, while others are more permanent. According to the World Health Organization, over 2.2 billion people have some form of vision impairment due to ophthalmic conditions. Knowing about these and their symptoms can help with diagnosis and management.

Refractive errors

Refractive errors are among the most diagnosed ophthalmic conditions and include many subtypes, including myopia (nearsightedness) and hyperopia (farsightedness). Astigmatism is another problem to be aware of that can cause distorted vision. Another condition to know about is presbyopia. The symptoms of this eye disease can include the loss of the ability to focus up close, the inability to read words in a book, and the need to hold a newspaper farther away to see clearly. It can occur between the ages of 40 and 50. Refractive errors are correctable with eyeglasses, contact lenses, or, in some cases, surgery.

Age-related macular degeneration

Age-related macular degeneration (AMD) is a common eye disorder that damages the macula. This can cause the loss of central vision needed for reading and driving. AMD can occur in two forms: wet and dry.

Wet AMD involves abnormal blood vessel growth, leakage, and rapid vision loss. It may cause individuals to see straight lines as wavy.

Dry AMD is more common, but progresses slowly. It is also linked to drusen, tiny yellow or white deposits under the retina, often found in people 60 years and older.

Cataract

A cataract is a clouding of the eye’s natural lens that makes vision blurry and hazy, and makes objects appear less saturated. This condition can interfere with daily activities, such as reading or driving. Cataracts develop most often with aging, though they can also result from eye injury or surgery. Early symptoms may not be easily noticeable. However, as the condition progresses, objects may appear faded and unclear. 

A cataract is diagnosed through a comprehensive eye exam. If necessary, a surgeon may perform a procedure to remove and replace the cloudy lens.

Diabetic retinopathy

This condition can lead to partial or complete loss of vision depending on the care taken. Diabetic retinopathy (DR) damages the retina’s blood vessels and usually affects both eyes. DR progresses through stages, from mild vessel swelling to advanced proliferative retinopathy with abnormal new vessel growth. The best way to control progression is by balancing blood sugar, blood pressure, and cholesterol. Early eye exams and timely treatment of the disorder help prevent vision loss. 

Glaucoma

Glaucoma is a group of eye diseases that damage the optic nerve. It can lead to vision loss or blindness. While glaucoma can develop even in normal eye pressure, it is more common when the eye pressure is high. The best way to manage the condition is to detect and treat it early, to prevent serious vision loss. The two main types are open-angle and angle-closure glaucoma. Open-angle glaucoma progresses slowly and often shows no early symptoms, earning the name “sneak thief of sight.” Angle-closure glaucoma appears suddenly, is painful, and requires urgent medical attention.

Amblyopia

Referred to as “lazy eye,” this is a common cause of vision impairment in children. If it isn’t treated in early childhood, amblyopia can last into adulthood. Amblyopia can develop when the brain and eyes are not synchronized. As a result, the vision in one eye is reduced. A few conditions that can cause amblyopia include strabismus, an imbalance in eye alignment. Being more nearsighted, farsighted, or astigmatic in one eye than the other eye can also be a cause. Other ophthalmic conditions, such as cataract, can also trigger this.