Search results
Results from the WOW.Com Content Network
Presbyopia; Other names: The aging eye condition [1] A person with presbyopia cannot easily read the small print of an ingredients list (top), which appear clearer to someone without presbyopia (bottom). Specialty: Optometry, ophthalmology: Symptoms: Difficulty reading small print, having to hold reading material farther away, headaches ...
In young patients, mild hypermetropia may not produce any symptoms. [2] The signs and symptoms of far-sightedness include blurry vision , frontal or fronto temporal headaches , eye strain , tiredness of eyes, etc. [ 2 ] The common symptom is eye strain.
Myopia or Nearsightedness: When the refractive power is too strong for the length of the eyeball, this is called myopia or nearsightedness. People with myopia typically have blurry vision when viewing distant objects because the eye is refracting more than necessary. Myopia can be corrected with a concave lens, which causes the divergence of ...
Low myopia usually describes myopia between −0.50 and −3.00 diopters. [65] Moderate myopia usually describes myopia between −3.00 and −6.00 diopters. [65] Those with moderate amounts of myopia are more likely to have pigment dispersion syndrome or pigmentary glaucoma. [84] High myopia usually describes myopia of −6.00 or more.
Hypermetropia: Young hypermetropes use excessive accommodation as a physiological adaptation in the interest of clear vision. Myopia: Young myopes performing excessive near work may also use excessive accommodation in association with excessive convergence. Astigmatism: Astigmatic eye may also be associated with accommodative excess.
For myopia the opposite is true: the divergent back surface is greater in magnitude than the convergent front surface. To correct for presbyopia, the lens, or section of the lens, must be more convergent or less divergent than the person's distance lens. Constant corrective power with different base curves require varying the back surface curvature
Visual or vision impairment (VI or VIP) is the partial or total inability of visual perception.In the absence of treatment such as corrective eyewear, assistive devices, and medical treatment, visual impairment may cause the individual difficulties with normal daily tasks, including reading and walking. [6]
(H52.0) Hypermetropia (Farsightedness) — the inability to focus on near objects (and in extreme cases, any objects) (H52.1) Myopia (Nearsightedness) — distant objects appear blurred (H52.2) Astigmatism — the cornea or the lens of the eye is not perfectly spherical, resulting in different focal points in different planes