Computer Eye Glasses
Individuals of all ages are spending so much time on the computer today. The constant focusing on the compuer screen overworks your eye muscles and causes painful eyestrain symptoms for children and adults. Special focusing lenses may be helpful whether you are 5 years old or 50 years old.
The special glasses removing ultraviolet light or having antireflective coatings will not solve your problems. However, if you spend many hours in front of a computer they will reduce the stress on your visual system. No matter what your age if you experience eye fatigue, eye strain, and tired eyes after periods of time at the computer and during near tasks, computer and near stress reducing lenses can help reduce strain and improve visual comfort and efficiency.
Especially, if you are over 40 and your arms aren't as long as they use to be, you may need specially designed glasses to see clearly and comfortably. During your early 40s simple reading glasses will probably work on the computer. As you get older your current reading or standard progressive lenses might not work.
Single Vision Lenses
Simple single vision lenses are often the answer in the patient just becoming presbyopic or when the computer terminal is at approximately the same distance as the computer terminal. They are easy to use and relatively in-expensive. They have minimal flexibility having only one focal distance.
Traditional Bifocals
May be a problem. The segment may be to low and set for 16". There is a range of clear vision with a bifocal and the computer may be too far away.
High Fitting Bifocals
Excellent sedentary glasses. Better for reading, computer work etc.
Top to watch TV or see people coming in your office. If reading distance and computer viewing distance are at the same distance this design will be effective. However, as you get older and loose more of your focusing and/or the computer and reading distances are different distances, this design may not work. The bifocal must be large and fit high.
Specially Designed Bifocals
Top of the lens is set for the computer and the bottom is set for reading. The bifocal segment should be low. Great compromise over the single vision lens. If made the frame should be on the small side, so that you can slide them down your nose to see at a distance. Disadvantage: noticeable line, no distance vision. Advantage: excellent optics with large field of vision.
Occupational Trifocals
Top of the glasses are for distance. Large intermediate area for the computer. "Bifocal segment" in the bottom for reading. These glasses are for working only. Removes the disadvantage of the preceding lens. Disadvantage: line is seen by you and others Advantage: excellent optics, large field of view.
Progressive Lenses
Normal progressive glasses might work on the computer but they have similar problems as traditional bifocal. The reading and intermediate area may not be high enough. More importantly the reading channel
is not wide enough and usually too low for your computer. Result: stiff neck.
Computer progressive lenses
A progressive design which is biased for near, i.e., reading and computer use. It has a narrowed channel at the top designed to see clearly as far as 15 feet; a large progressive intermediate zone for the computer; and a large area for reading. There are no lines, thus, it is cosmetically acceptable and very functional in an office environment. Best to leave at your desk. Note the traditional progressive has a large distance area and a smaller, lower intermediate and reading area.
Smart Segment
An excellent lens for the person who is wearing a traditional bifocal who needs to extend his/her range of focus. Has the advantage of a progressive without the disadvantages (wide field with little distortion) The optics are good and the intermediate and reading areas are wide. The top of the "progressive bifocal" is set for 28 inches while the bottom is set for 16 inches.
