Category Archives: Eye Sight Issues

PRESBYOPIA AND TIRED SIGHT

 

WHAT IS PRESBYOPIA?

“Presbyopia or tired sight is a visual difficulty that appears over the years and causes problems when focusing on nearby objects.”

The lens, a natural lens of the eye, makes the effort necessary to see closely. This effort, known as an ” accommodation reflex, ” becomes more difficult over the years, and as a consequence, objects in the near vision look worse .

  • symptom
  • Symptoms of Presbyopia
  • Extend your arms or lift your glasses so you do not see blur
  • Visual fatigue and headache when reading closely
  • Itching or stinging eyes working with the computer
  • Difficulty reading small print
  • Far blurry objects
  • Presbyopia is not a disease, it is a natural evolution of sight from the age of 40-45 years.

IS PREVENTING TIRED SIGHT POSSIBLE?

The tired sight is an inevitable consequence of the passage of the years, a natural evolution of vision and, therefore, can not be prevented. All people end up having presbyopia sooner or later, although the most frequent one is that it manifests from the 40-45 years.

Although tired sight can not be prevented, it is possible to correct its effects with different methods. The most common: ophthalmic lenses.

 

WHAT IS THE DIFFERENCE BETWEEN PRESBYOPIA AND ASTIGMATISM?

 

Astigmatism is an error in the visual approach because the cornea, rather than being spherical, is slightly oval. This refractive error is described in function of the difference of curvatures and the orientation or axis of the same. People who have astigmatism may have trouble seeing from near and far.

Astigmata are usually myopic and / or hyperopic. An astigmata may have visual problems similar to those experienced by a presbyopic. But, it should be noted that while astigmatism is determined by the genetic morphology of the eye, presbyopia is due to stiffness of the lens, caused by the passage of time .

WHAT IS THE DIFFERENCE BETWEEN PRESBYOPIA AND MYOPIA?

The myopia or refractive error is a mistake in the visual approach which occurs when the distance between the cornea and the retina is too long. Thus, the image perceived by the eyes is “formed” before reaching the retina and, as a consequence, the myopic has difficulty seeing the objects that are far, but not those that are near.

The greater the degree of myopia, the more the person has to approach the objects to see them well. Presbyopia is also a refractive error but it is not due to the genetic morphology of the eye, but to the malfunctioning of the eye due to age. On the other hand, presbyopes have difficulty seeing nearby objects, not distant ones. In addition, while myopia usually appears in childhood and evolves to stabilize (around 20 years), presbyopia appears after 40 years.

 

PRESBYOPIA AND TIRED SIGHT: IS IT EXACTLY THE SAME?

 

Both terms are synonyms; although ” tired view ” is more colloquial and ” presbyopia ” more technical. Frequently, the “tired sight” is confused with “visual fatigue” . Visual fatigue is a consequence of having made an excessive accommodating effort associated with either an activity involving near vision, such as reading in poor light or spending much time working with the computer, or an activity that requires constant changes of focus near-far, like driving.

Visual fatigue, in addition to visual difficulties, causes discomfort in the eyes: tearing, itching, redness, gritty sensation, etc. Thus, while visual fatigue disappears when the eyes relax and allow time for the activity that has fatigued them, the tired eye is chronic . Once presbyopia is manifested, episodes of visual fatigue are more frequent.

IS PRESBYOPIA REVERSIBLE?

Presbyopia continues throughout our life in a natural way. It is a process associated with aging of the eye and loss of elasticity of the lens. Presbyopia is not a reversible process. Currently there are surgical options that compensate for presbyopia: intracorneal lenses, intraocular lenses ..

 

IS IT POSSIBLE TO HAVE PRESBYOPIA ONLY AT NIGHT, NIGHT PRESBYOPIA?

 

In the first stages of presbyopia, when graduation is not fully structured, and due to over activity throughout the day, it can be noticed more pronounced at night.

CONVERGENT OR DIVERGENT LENSES FOR PRESBYOPIA?

Presbyopia is compensated by positive lenses that add to graduation from afar.

Converging lenses are positive so presbyopia is compensated by positive lenses although the final close-up may be positive or negative depending on the graduation we have at a distance.

 

AM I AT RISK FOR PRESBYOPIA?

More than a risk is a natural process that affects or will affect all people at a certain point in our lives. Over the years, the lens of the eye loses its flexibility so that it can not focus sharply on nearby objects.
NATURAL CURE FOR PRESBYOPIA. EXISTS?
There is no natural cure for presbyopia, understanding that it is not a disease. It is a natural way of aging the eye that affects anyone.

PROGRESSIVES FOR ASTIGMATISM. CAN I WEAR BIFOCALS OR MONOFOCAL?
Progressive lenses allow you to meet different visual needs on a single lens. If our activity requires focusing at different distances, the best option is progressive lenses. In your nearest ophthalmological center, you can evaluate the best visual solution for each situation.

DELAY PRESBYOPIA. CAN PRESBYOPIA BE PREVENTED?

 

Presbyopia can not be prevented or delayed because it is not a disease, but a natural process. Presbyopia, also known as a tired eye, is a visual defect associated with the age by which the lens loses elasticity so that the eye sees reduced its ability to adapt and therefore to see up close. Presbyopia, being related to an age-related degenerative process, can not be prevented.

THIN PROGRESSIVES, WHAT THICKNESS HAS A PROGRESSIVE LENS?

There are several parameters that must be taken into account when defining and evaluating the thickness of a progressive lens such as the graduation of the user, matter with which the lens is manufactured as well as the index of refraction of the same. Also the shape of the chosen frame and the nasopupilar distances ( the nasopupilar distance is the distance between the axis of symmetry of the face and the center of the pupil) of the user.

ARE ALL PROGRESSIVE LENSES THE SAME?

No. There are more advanced and more basic correction products. Progressive lenses of old traditional generation solve your visual needs in a very generic and inaccurate way.

80% of the information we receive is through the eyes, which is why it is worth using a more advanced and complete product.