Who is an eye doctor?
The importance of eye health can not be overstated, as it is directly related to an individual's overall well-being and quality of life. Eye doctors play a crucial role here, serving as medical professionals who are extensively trained in the field to take care of your vision.
There are two major types of eye doctors:
- Ophthalmologists: Medical doctors (MDs) or doctors of osteopathy (DOs)
- Optometrists: Non-medical doctors but hold a Doctor of Optometry (OD) degree
Additionally, there are opticians who work as eye care specialists, assisting people by fitting eyeglasses, contact lenses, and other vision correction devices based on the prescriptions provided by these eye doctors, ophthalmologists, and optometrists.
Who is an ophthalmologist?
An ophthalmologist is a medical provider who diagnoses and treats eye diseases and disorders. They are experts in the field of ophthalmology, which deals with the eye's anatomy, physiology, and the conditions that affect the eyes.
Ophthalmologists use a wide range of diagnostic tools and techniques to assess eye health, including vision tests, retinal imaging, and optical coherence tomography (OCT). They train to identify and manage a variety of eye conditions and concerns, ranging from common refractive errors like nearsightedness and farsightedness to more severe diseases like glaucoma, cataracts, and macular degeneration.
In addition to diagnosing and treating eye disorders, ophthalmologists perform surgical procedures to correct vision problems and restore or improve vision. The most common surgical procedures ophthalmologists perform include LASIK, cataract surgery, and corneal transplants.
Ophthalmologists work closely with other healthcare providers, such as optometrists and primary care physicians, to provide comprehensive eye care for their patients. They may also collaborate with other medical specialists, such as neurologists and oncologists, to manage eye problems related to other medical conditions.
Education and training of an ophthalmologist
To become an ophthalmologist, one must first complete a four-year undergraduate degree, typically in a science-related field such as biology, chemistry, or physics. After completing undergraduate studies, aspiring ophthalmologists must attend medical school, which typically lasts for four years.
After medical school, an ophthalmologist must complete a one-year general medicine or surgery internship. Following the internship, they must complete a three-year residency program in ophthalmology, during which they receive specialized training in diagnosing and treating eye disorders.
During their residency, ophthalmologists receive hands-on training in various areas, including pediatrics, glaucoma, corneal diseases, and retinal disorders. They also receive extensive training in surgical procedures, such as laser eye and cataract surgery.
After completing their residency, some ophthalmologists choose to pursue additional training through a fellowship program, which can take an extra one to two years. Fellowship training allows ophthalmologists to specialize further in areas such as neuro-ophthalmology, oculoplastics, or vitreoretinal surgery.
What are the subspecialties seen in ophthalmology?
An ophthalmologist can further suggest an individual to a specific subspecialist for their symptoms. The different types of subspecialists can be:
- Cornea: The clear, dome-shaped covering of the iris and pupil of the eye is known as the cornea. So, a cornea subspecialist helps diagnose and manage corneal eye diseases, including dry eyes and keratitis. Additionally, they can handle corneal trauma and complicated contact lens fittings. Many can also perform refractive surgery (such as LASIK) and corneal transplants.
- Retina: The light-sensitive tissue lining in the back of the eye called the retina consists of the macula, a small area for a person's central, detailed vision. So, a retina specialist helps diagnose and manage retinal diseases such as diabetic eye disease, retina detachment, and macula degeneration. Additionally, they can surgically repair the torn and damaged parts of the retina.
- Glaucoma: It is a disease that causes damage to the optic nerve, which connects a person's eye to the brain. The most commonly seen type of glaucoma is related to high pressure in the eye. If the fluid does not circulate properly, a pressure build-up inside the eye damages the optic nerve. A glaucoma subspecialist has various methods to manage eye pressure, including medications, lasers, and surgery.
- Pediatrics: Pediatric ophthalmologists treat eye disorders in infants and children. They diagnose, manage, and treat malalignment of the eyes, refractive errors, vision differences between the two eyes, childhood eye diseases, and other conditions.
- Oculoplastics: Oculoplastic surgeons specialize in repairing damages or addressing issues related to the eyelids, bones, and other structures surrounding the eye and the tear drainage system. They use medical injections around the eyes and face to enhance the appearance and functionality of an individual's facial features.
- Neurology: Neuro-ophthalmologists specialize in treating vision problems resulting from the eye's interaction with the brain, nerves, and muscles. They diagnose and provide treatment for various types of vision loss, optic nerve problems, abnormal eye movements, unequal pupil size, double vision, and eyelid abnormalities. Often, conditions such as multiple sclerosis, brain tumors, strokes, and thyroid eye disease cause these issues.
How often should I get my eyes examined?
A study by WHO (World Health Organization) in 2019 showed that 2.2 billion people were globally affected by visual impairment. Vision changes can occur at any age. Regular eye checkups are vital for your overall health, even if you do not wear lenses or glasses. An eye doctor can determine your health just by looking at the blood vessels of your eyes. Regardless of age, they should do an exam every year. Annual visits to an eye doctor near you will ensure good vision and prevent any future diseases related to the eyes.
Optometrist vs. ophthalmologist
An ophthalmologist is a healthcare professional who can perform surgical operations and prescribe medications for eye-related diseases. On the other hand, an optometrist is a trained doctor who can examine and treat eye-related problems.
You can visit an optometrist for routine eye exams and get prescription glasses or lenses. Meanwhile, you can see an ophthalmologist for severe eye conditions or diseases and related medical procedures or surgeries.
What is an eye exam?
An extensive eye exam includes testing your vision, usually performed to check visual acuity and identify the sharpness. Eye exams can detect common eye-related diseases or disorders like refractive errors, age-related degeneration, cataracts, glaucoma, etc. Some of the most common vision problems can be refractive errors of different types: nearsightedness, far-sightedness, presbyopia, and astigmatism. Also, chronic diseases such as diabetes, high blood pressure, high cholesterol, brain tumors, etc., can be detected at an early stage through regular checkups.
Usually, an eye exam will be recommended based on age, family history, and other risk factors. However, regular checkups may be necessary depending on whether you wear glasses or lenses and any changes that you may experience in your vision. A comprehensive eye exam may take 1-2 hours. It may include a detailed review of your medical history, lifestyle, habits, refraction test, eye focus test, eye anatomy, dilation, etc.
Due to long periods of exposure to electronic devices, inactivity of eye focus, reading in poor light, watching television, or driving, you may feel strain effects on your eyes. Some common signs of eye strain are tired or heavy eyelids, constant rubbing of eyes, squinting or blinking, frequent episodes of migraine or headache, etc.
While some disorders are likely to be prevented easily, diseases like glaucoma are not commonly detected. It is one of the leading causes of blindness worldwide, of which 3 million Americans are affected. Typically, glaucoma occurs due to damage to the optic nerve, and this vision impairment is irreversible. Primary open-angle glaucoma is one of the commonly occurring types of glaucoma. Others include normal-tension Glaucoma or low-tension glaucoma, congenital Glaucoma, secondary open-angle Glaucoma, and angle-closure Glaucoma.
Six types of tests are used to evaluate:
- Tonometry, which determines the pressure of the cornea
- Pachymetry, which measures the cornea's thickness
- Gonioscopy numbs the eye with a particular type of eye drop that examines the eye's drainage
- Ophthalmoscopy to examine the optic nerve
- Visual field testing that detects any damage to the optic nerve
- Confocal laser scanning to evaluate any ocular damage
However, knowing your risk of glaucoma is vital for prevention. Studies have shown that people from the African-American community over 40, all senior citizens over 60, and people diagnosed with diabetes stand at a higher risk of glaucoma.
Glaucoma is commonly treated with eye drops; however, surgical intervention may sometimes be necessary. If medical procedures are recommended, ensure regular follow-up visits with your provider.
Regular eye checkups, wearing sunglasses to protect your eyes from ultraviolet rays, a balanced diet and lifestyle, and using screen protectors or filters are some ways to reduce the risk of glaucoma.
Foods to support and boost your eye health
"The eye is the jewel of the body," and it is essential to protect and nourish it. Following a simple yet smart routine along with a healthy diet can yield optimal and long-term benefits. Here are some foods to incorporate into your daily life for better eye health:
- Leafy greens: Spinach, kale, and collard greens are rich in vitamins E and C, lutein, and zeaxanthin, which help protect against long-term eye diseases like AMD and cataracts.
- Orange-colored fruits and vegetables: These are packed with beta-carotene (a form of vitamin A) that supports night vision and overall eye health. Examples include sweet potatoes, carrots, mangos, cantaloupe, and apricots.
- Fatty fish: Salmon, tuna, and trout contain omega-3 fatty acids that can prevent dry eyes, AMD, and glaucoma and support retinal health.
- Eggs: Bestowed with lutein, zeaxanthin, and vitamin A, eggs are great for overall eye health.
- Nuts and seeds: Almonds, walnuts, hazelnuts, peanuts, and peanut butter are excellent sources of vitamin E. Studies have shown that these have the potential to slow the progression of AMD and prevent cataracts.
Besides, for more personalized advice, it is always wiser to see a healthcare provider, such as a nutritionist or an eye doctor.
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Statistics for eye conditions in California
An estimated 93 million people are at high risk of losing their vision, but only half have visited a doctor for an eye exam. Detecting eye conditions early, like diabetic retinopathy, makes treating them easier and more cost-effective. Due to increasing epidemics such as diabetes and other chronic diseases, the estimated number of blind people will double to 8.96 million by 2050. Almost 90% of blindness caused by diabetes is preventable.
More than half of adult Americans do not seek eye care due to a lack of health insurance and associated costs. Vision disability is one of the most prevailing disabling conditions among young children. More than 760,000 people have reported blindness or have severe difficulty seeing, even with glasses, in California alone. Approximately 88,000 people 40 years and older have low vision, and 64,000 are blind in Los Angeles County. By 2030, this number may increase by about 20% to over 106,000 if the prevalence of eye diseases that cause low vision remains the same.
Sources
American Academy of Ophthalmology
Centers for Disease Control and Prevention[1]
Centers for Disease Control and Prevention[2]
Centers for Disease Control and Prevention[3]
World Health Organization
Braille Institute of America, Inc.
American College of Surgeons
Cleveland Clinic
WebMD
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