Before we begin: The retina is a layer of tissue in the back of your eye. It senses light.
This tutorial walks you through everything you need to know about retinal disorders. We explain it in plain language, step by step, so whether you are a student, a patient, or simply curious, you will come away with a solid understanding.
We cover what it is, why it matters, how it is diagnosed, and what you can do about it. Key facts are called out along the way.
What are retinal disorders? Retinal disorders are conditions that affect the retina, the thin light-sensitive tissue at the back of your eye. The retina senses light and sends signals to your brain so you can see.
Retinal disorders can cause blurred or distorted vision. Some can lead to vision loss or blindness.
What causes retinal disorders? The causes of retinal disorders vary. Aging is a common factor, but other things can raise your risk, such as if you:
Smoke
Have obesity
Have health conditions like diabetes or high blood pressure
Have had an eye injury or trauma
Have a family history of retinal disorders
What are common retinal disorders? Some common retinal disorders include:
Macular degeneration. Occurs when the macula (the center of the retina that helps you see fine details) breaks down. There are two types: wet and dry macular degeneration.
Diabetic retinopathy. Occurs when diabetes damages small blood vessels in the retina, causing them to swell or leak.
Retinal detachment. Occurs when the retina pulls away from the back of the eye. This is a medical emergency.
Retinal tears. A hole or break in the retina caused when the gel-like substance inside your eye (the vitreous) pulls away.
Retinoblastoma. A rare cancer of the retina that most often affects young children.
Macular pucker. Scar tissue that forms on the macula and distorts vision.
Macular hole. A small opening in the macula, often related to aging or injury. It can blur or distort central vision.
Eye floaters. Small specks, cobwebs, or threads that drift across your vision. These are more common with aging.
Retina pigmentosa. A group of inherited disorders (passed down through families) that slowly damage the retina and cause loss of night and side (peripheral) vision.
What are the symptoms of retinal disorders? Symptoms can vary, but most retinal disorders affect your vision. Common symptoms include:
Blurred or distorted vision
Loss of central or side (peripheral) vision
Flashes of light
Seeing floating specks or cobwebs
Trouble seeing at night
Sudden vision loss (in severe cases)
Seek medical care right away if you notice flashes of light, sudden vision changes, or a sudden increase in eye floaters. These can be signs of a serious retinal problem.
How are retinal disorders diagnosed? Eye care providers check for retinal disorders with a dilated eye exam. Eye drops are used to widen your pupils so your provider can look at the retina for signs of damage.
They may also do other tests, such as:
Optical coherence tomography (OCT) to take detailed pictures of the inside of your eye.
Fluorescein angiography to check the blood vessels in your retina.
Visual field tests to measure your side (peripheral) vision.
How are retinal disorders treated? Some retinal disorders can be treated to slow or stop vision loss, and sometimes to restore vision. Treatment depends on the cause and severity. It may include:
Laser therapy
Medicine or eye injections
Surgery
Lifestyle management to control health conditions such as diabetes or high blood pressure
Can retinal disorders be prevented? Not all retinal disorders can be prevented. Some are related to aging or genetics. But you can protect your eyes by:
Wearing safety goggles or sunglasses
Getting regular eye exams
Making healthy lifestyle changes, such as:
Quitting smoking (or not starting)
Managing diabetes and blood pressure
NIH: National Eye Institute
Related topics: Floater.
Categories: Eyes and Vision.
Source: National Institutes of Health — National Eye Institute.
Key Takeaways
Understanding retinal disorders is an important part of taking charge of your health. Here is what to remember:
- Know the signs — Recognizing early symptoms can lead to earlier diagnosis and better outcomes.
- Talk to your provider — If you have concerns or a family history of this condition, bring it up at your next checkup.
- Stay informed — Medical knowledge evolves. Keep learning and asking questions.
- You are not alone — Many people deal with this condition. Support groups and educational resources can help.