📘 Optometry Terminology

Understanding eye care terms can help you feel more confident about your vision and eye health. Below are common optometry terms explained in a simple way.

👁️ Amblyopia

Amblyopia, sometimes called lazy eye, is reduced vision in one eye or sometimes both eyes that develops when vision does not develop normally during childhood.

🌙 Astigmatism

Astigmatism occurs when the eye does not focus light evenly, which can cause blurred or distorted vision.

👓 Bifocal Glasses

Bifocals contain two prescription areas, typically distance vision on top and near vision on the bottom.

Bifocals have a visible line and do not provide a dedicated intermediate viewing area.

🌫️ Cataract

A cataract is clouding of the eye's natural lens. It can cause hazy or blurred vision, glare, and other changes in vision.

👁️‍🗨️ Conjunctivitis

Conjunctivitis is inflammation of the conjunctiva, the thin tissue covering the white part of the eye and the inside of the eyelids.

🔍 Farsightedness (Hyperopia)

Hyperopia is a refractive condition that can make near vision more difficult and may also affect distance vision, depending on the amount of hyperopia and the patient's age.

🫧 Floater

Floaters are spots, strands, or lines that appear to move through your vision. They are commonly related to changes in the vitreous gel inside the eye.

🧠 Glaucoma

Glaucoma is a group of eye diseases that damage the optic nerve and can cause permanent vision loss, often beginning with peripheral vision.

🌀 Keratoconus

Keratoconus is a condition in which the cornea becomes thinner and changes shape, which can cause distorted or blurred vision.

🎯 Macular Degeneration

Macular degeneration is a condition affecting the macula, the central portion of the retina responsible for detailed central vision.

👁️ Monovision

Monovision is a vision-correction approach in which one eye is primarily corrected for distance and the other for near.

📍 Myopia (Nearsightedness)

Myopia is a refractive condition in which distant objects appear blurrier than nearby objects.

🔄 Nystagmus

Nystagmus is an involuntary movement of the eyes that can affect vision.

🌍 Peripheral Vision

Peripheral vision is your side vision — what you can see outside your direct line of sight.

📖 Presbyopia

Presbyopia is the age-related loss of the eye's ability to focus clearly at near distances.

✨ Progressive Glasses

Progressive lenses provide a gradual change in prescription from distance to intermediate to near vision.

Unlike bifocals or trifocals, progressive lenses have no visible lines.

🌬️ Pterygium

A pterygium is a growth of tissue from the conjunctiva onto the cornea. UV exposure, wind, and dust may contribute to its development.

🩸 Retinopathy

Retinopathy refers to damage or disease affecting the retina. Diabetes and high blood pressure are among the conditions that can affect retinal health.

👀 Strabismus

Strabismus is a condition in which the eyes are not properly aligned and may point in different directions.

🌤️ Transitions Lenses

Transitions lenses are clear indoors and darken outdoors in response to UV light.

Because most vehicle windshields block much of the UV light that activates them, they may not darken as much inside a car.

🔎 Trifocal Glasses

Trifocal lenses contain three prescription areas for distance, intermediate, and near vision.

Trifocals have visible lines separating the different viewing areas.