“Eye doctor” covers two distinct careers: optometrist and ophthalmologist. Both diagnose and treat eye conditions, but they follow different educational paths, take different lengths of time, and come with different scopes of practice. An optometrist earns a Doctor of Optometry (OD) degree and typically completes about eight years of education after high school. An ophthalmologist earns a medical degree (MD or DO) and completes twelve or more years of training, including surgical residency. Which path you pursue depends on whether you want to focus on primary eye care or perform eye surgery.
Optometrist vs. Ophthalmologist
Optometrists provide primary eye care. They perform eye exams, prescribe glasses and contact lenses, diagnose conditions like glaucoma and macular degeneration, and prescribe medications to treat eye diseases. They are not medical doctors and do not perform most surgeries, though a growing number of states have passed laws allowing optometrists to do certain limited procedures.
Ophthalmologists are physicians. They do everything optometrists do, plus they perform eye surgery, from cataract removal to retinal detachment repair. Their training covers the full spectrum of medicine before they specialize in the eye, which means they also manage eye problems linked to conditions like diabetes or autoimmune disease. About 40% of ophthalmologists go on to complete an additional one- to two-year fellowship in a subspecialty.
How to Become an Optometrist
The optometry path has four main stages: undergraduate prerequisites, the admissions exam, four years of optometry school, and board licensing.
Undergraduate Coursework
Most optometry programs require at least 60 semester hours of college study, though many applicants complete a full bachelor’s degree to be more competitive. The core prerequisites for most schools include at least one year each of biology, general chemistry, general physics, English, and college math. Some programs also require organic chemistry. These science courses form the backbone of what you’ll study in optometry school, so strong grades here matter.
The OAT
To apply to optometry school, you’ll take the Optometry Admission Test. It has four sections: Survey of Natural Sciences, Reading Comprehension, Physics, and Quantitative Reasoning. It’s a science-heavy exam, but shorter and more narrowly focused than the MCAT used for medical school admissions.
Optometry School
Optometry school is a four-year professional program. The first two to three years focus on classroom and lab instruction covering optics, ocular anatomy, pharmacology, and disease. The final year is largely clinical rotations, where you examine and treat patients under supervision. Unlike medical school, optometry programs do not require a postgraduate internship or residency, though some graduates pursue optional residencies in areas like pediatric optometry or vision therapy to sharpen a particular skill set.
Board Exams and Licensing
Before you can practice, you need to pass the three-part National Board of Examiners in Optometry (NBEO) exam. Part I, called Applied Basic Science, is a 350-question exam covering everything from refractive conditions and contact lenses to glaucoma, retinal disease, and systemic health. Parts II and III test clinical skills and patient management. If you want to prescribe therapeutic medications, which is standard in most modern practices, you’ll also need to pass an additional exam on treatment and management of ocular diseases. Each state has its own licensing requirements on top of these national boards.
Total timeline from starting college: approximately eight years.
How to Become an Ophthalmologist
The ophthalmology path is longer and more competitive at every stage. It runs through medical school, a general internship, and a multi-year surgical residency.
Undergraduate Coursework
All medical schools require a bachelor’s degree (with rare exceptions for combined degree programs). Prerequisite courses typically include biology, general chemistry, organic chemistry, biochemistry, physics, English, and math or statistics. The expectations overlap with optometry prerequisites but go further, particularly with the organic chemistry and biochemistry requirements.
The MCAT
Medical school admission requires the MCAT, which is significantly longer and broader than the OAT. It tests four areas: biological and biochemical foundations, chemical and physical foundations, psychological and social foundations of behavior, and critical analysis and reasoning. The behavioral science section has no equivalent on the OAT, and the exam overall demands a wider base of knowledge.
Medical School
Medical school lasts four years. The first two years are primarily classroom-based, covering anatomy, physiology, pharmacology, pathology, and other core medical sciences. The second two years consist of clinical rotations through various specialties: internal medicine, surgery, pediatrics, psychiatry, and others. This broad medical training is what separates ophthalmologists from optometrists. You learn to manage patients across all organ systems before ever focusing on the eye.
Residency
After medical school, you complete a one-year internship in general medicine, pediatrics, or surgery, followed by three years of ophthalmology residency. During residency, the training requirements are substantial. Residents must manage a minimum of 3,000 outpatient visits covering a wide range of eye diseases, and they must assist at and then personally perform a specified number of surgical procedures under supervision. The total clinical training for an ophthalmologist adds up to 12,000 to 16,000 hours.
Fellowship Subspecialties
Many ophthalmologists stop after residency and practice comprehensive ophthalmology. But roughly 40% pursue an additional one- to two-year fellowship to subspecialize. Common fellowships include:
- Vitreoretinal surgery: treating retinal detachments, macular conditions, and diseases of the vitreous
- Glaucoma: medical and surgical management of elevated eye pressure and optic nerve damage
- Cornea and external disease: corneal transplants, refractive surgery, and diseases of the eye surface
- Pediatric ophthalmology: treating childhood eye conditions like crossed eyes, lazy eye, and developmental abnormalities
- Ophthalmic plastic surgery: reconstructive and cosmetic surgery of the eyelids, eye socket, and surrounding facial structures
- Neuro-ophthalmology: vision problems caused by neurological conditions, generally a non-surgical subspecialty
Total timeline from starting college: twelve to fourteen years, depending on whether you do a fellowship.
Side-by-Side Timeline
- Optometrist: 4 years undergraduate + 4 years optometry school = ~8 years
- Ophthalmologist: 4 years undergraduate + 4 years medical school + 1 year internship + 3 years residency = ~12 years (add 1-2 for fellowship)
Salary and Job Outlook
The median annual salary for optometrists was $134,830 as of May 2024, according to the Bureau of Labor Statistics. Pay varies significantly by setting. Optometrists working in outpatient care centers earned a median of $196,800, while those in their own private optometry practices earned $127,980.
Ophthalmologists, classified under physicians and surgeons, earned a median of $239,200 or more per year. Subspecialists performing high-volume surgeries, particularly in retina or oculoplastics, can earn considerably above that median. The higher salary reflects the longer training, surgical capability, and broader medical responsibility.
Choosing the Right Path
If you want to help people see clearly, manage chronic eye conditions, and run a clinic-based practice without years of surgical training, optometry is a direct and rewarding path. You’ll be in practice by your late twenties and earning a strong salary with a predictable schedule.
If you’re drawn to surgery, want to treat the most complex eye diseases, or see yourself working in a hospital or academic medical center, ophthalmology offers that scope, but it demands a much longer commitment and a willingness to compete at every stage. Medical school admissions, residency matching, and fellowship slots are all highly competitive.
Both careers are growing as the population ages and demand for eye care increases. The decision often comes down to whether you want to be a primary care provider for the eyes or a surgeon, and how many years of training you’re willing to invest before you start practicing.