By Dr Adaeze Ebiye-Nwoko (OD)
Every day across Nigeria, well-meaning advice about vision health passes from generation to generation. You have likely heard that eating enough carrots guarantees perfect 20/20 vision, that reading in dim light permanently ruins your eyes, or that wearing glasses only makes your eyes “weaker” over time.
While some of these old sayings contain a tiny grain of truth, many are pure myths that lead people to delay essential optical care.
Blindness and vision loss are major public health concerns, yet up to 80% of visual impairment worldwide is preventable or treatable. Misinformation remains one of the largest obstacles preventing individuals from seeking timely care.
To help separate optical fact from folklore, let’s explore common eye care myths alongside findings from peer-reviewed medical journals and practical guidance from IrisCare Eye Clinic, Dopemu, Lagos.
Myth 1: “Eating Carrots Guarantees Perfect Vision.”
The Reality:
Carrots are rich in beta-carotene, a precursor to Vitamin A, which is crucial for maintaining a healthy cornea and helping the eye process light in low-lit conditions. However, consuming mountains of carrots will not cure refractive errors like nearsightedness (myopia), farsightedness (hyperopia), or astigmatism.
What the Medical Journals Say:
According to extensive dietary research published in Ophthalmology and The British Journal of Ophthalmology, while severe Vitamin A deficiency causes night blindness and corneal scarring, extra dietary beta-carotene cannot reshape an elongated eyeball or flatten a curved cornea. Furthermore, comprehensive retinal health relies on a much broader range of nutrients, including Lutein, Zeaxanthin, Omega-3 fatty acids, and Zinc, which are found in green leafy vegetables, eggs, and oily fish.
“Myth 2: “Once You Start Wearing Glasses, Your Eyesight Will Keep Getting Worse.”
The Reality:
This is one of the most common misconceptions encountered in daily optometric practice. Many patients believe that once they start wearing glasses, their eyes become “lazy” or dependent on the lenses, causing their baseline vision to deteriorate faster.
Glasses do not physically alter the anatomy of an adult eye, nor do they make vision worse. They simply bend incoming light rays so they focus precisely on the retina, giving you a sharp, clear image.
When people adapt to seeing clearly with glasses, uncorrected vision simply feels much blurrier by comparison. Age-related changes such as presbyopia (difficulty reading small print after age 40) happen naturally due to the hardening of the crystalline lens, regardless of whether you wear corrective glasses or not.
Myth 3: “If Your Eyes Feel Normal, You Cannot Have Glaucoma.”
The Reality:
Glaucoma is often nicknamed “the silent thief of sight” for a reason: in its most common form (primary open-angle glaucoma), it causes zero pain and no early visible symptoms. Central vision remains clear while peripheral (side) vision slowly deteriorates over years. “Glaucoma can damage your eyesight slowly without you knowing until some of the damage is already permanent.”
What the Medical Journals Say:
Research published in The Lancet and Investigative Ophthalmology & Visual Science (IOVS) shows that pressure inside the eye can increase without obvious signs, gradually damaging the delicate nerve fibres responsible for vision without causing pain or redness. High-risk populations including individuals of African descent, people over 40, and those with a family history of glaucoma are significantly more susceptible.
Regular eye examinations that measure internal eye pressure and evaluate the optic nerve head are the only reliable way to catch glaucoma early before vision is permanently lost.
Myth 4: “Reading in Dim Light or Spending Too Much Time on Your Phone Can Permanently Damage Your Eyes.”
The Reality:
Reading in dim light or spending long hours on phones and computers causes eye fatigue, strain, dry eyes, and temporary headaches, but it does not cause permanent structural damage to the adult eye.
When working on digital screens or reading in low light, your blink rate drops by up to 50% (from an average of 15–20 blinks per minute down to 5–7 blinks). This causes the tear film on the surface of your eyes to evaporate quickly, leading to dryness, burning, and blurred vision.
The Expert Solution:
Optometrists recommend practicing the 20-20-20 Rule:
“Every 20 minutes, take a short break to rest your eyes.”
Look at an object at least 20 feet away.
Hold your gaze for at least 20 seconds to allow your eye’s focusing muscles to relax and trigger natural blinking.
Taking Action:
Comprehensive Eye Care in Lagos: Relying on myths rather than clinical evidence leaves your vision vulnerable to preventable conditions. The single best way to preserve your sight throughout every stage of life is by scheduling routine, comprehensive eye examinations with qualified eye care professionals. For residents in Agege, Dopemu, Egbeda, Iyana-Ipaja, and across the Lagos mainland, world-class eye care is right in your neighborhood at IrisCare Eye Clinic, Dopemu, Lagos. Located conveniently at Greater Path Mall, 155 Dopemu Road, Dopemu, Agege, Lagos, IrisCare Eye Clinic combines advanced diagnostic technology with a warm, patient-first approach to health care.
Why Choose IrisCare Eye Clinic?
Expert Clinical Leadership: The practice is led by registered optometrist Dr. Ebiye-Nwoko Adaeze, O.D., who provides thorough, unhurried consultations and clear explanations without confusing jargon.
Advanced Diagnostics: Equipped with computerized auto-refractors, digital slit-lamp biomicroscopes, and non-contact tonometer devices for accurate, early detection of glaucoma, cataracts, and refractive errors.
On-the-Spot Glazing: Need new prescription glasses? With an on-site lens glazing laboratory and a collection of over 900 stylish frames, most standard prescriptions are processed, fitted, and ready on the very same day.
HMO & Health Insurance Accepted: Access quality eye care with support from our partnered health insurance providers.
Protect Your Sight with Evidence-Based Care
Your vision is one of your most valuable assets. Don’t let common myths or unverified advice dictate how you care for your eyes. Whether you are overdue for a routine eye test, experiencing screen-induced eye strain, or looking for early glaucoma screening, expert care is nearby.
Visit IrisCare Eye Clinic, Dopemu, Lagos (Greater Path Mall, 155 Dopemu Road) or contact their clinical team today to book your comprehensive eye examination. Clear, healthy vision starts with evidence-based medicine not optical myths. Book Your Appointment