The cornea and lens of your eye helps you focus. Refractive errors are vision problems that happen when the shape of the eye keeps you from focusing well. The cause could be the length of the eyeball (longer or shorter), changes in the shape of the cornea, or aging of the lens.
Four common refractive errors are
- Myopia, or nearsightedness - clear vision close up but blurry in the distance
- Hyperopia, or farsightedness - clear vision in the distance but blurry close up
- Astigmatism - focus problems caused by the cornea
- Presbyopia - inability to focus close up as a result of aging
The most common symptom is blurred vision. Other symptoms may include double vision, haziness, glare or halos around bright lights, squinting, headaches, or eye strain.
Glasses or contact lenses can usually correct refractive errors. Laser eye surgery (PRK, FemtoLasik, or SMILE) may also be a possibility. For extremely high refractive errors, which are outside of the treatment range of laser refractive surgery, refractive lens exchange may be a viable option.
NIH: National Institutes of Health
MD, MBA, DPBO, FPAO, FPCS
Dr. Manolette Roque is a specialist in uveitis, cataract, and refractive surgery. His private practice began in 2000, after his post-graduate fellowship at the Massachusetts Eye and Ear Infirmary, Harvard Medical School, in Boston, Massachusetts, USA. His patients are mostly adults who desire spectacle independence. His advocacy includes taking care of individuals with ocular inflammatory diseases.
Everyone deserves the best eye care possible.
MD, DPBO, FPAO, FPCS
Dr. Barbara Roque is a specialist in pediatric ophthalmology, adult strabismus, and ophthalmic genetics. Her private practice began in 2006, after her post-graduate fellowship training at The Children’s Hospital in Westmead, University of Sydney System, Australia. Her patients are mostly children with ocular disease, refractive errors, cataracts, and eye misalignment.