What's the difference between asthenopia and eyestrain?
Asthenopia
Definition:
(n.) Weakness of sight.
Example Sentences:
(1) Diplopia and asthenopia following retinal surgery are rare, despite relatively frequent muscular imbalance, because of: (a) suppresion (which war frequently found even in orthophorics with good postoperative vision in both eyes); (b) compensation owing to fusional power, and (c) probable role of the sensory factor for the compensation of the subjective experience of cyclotropia.
(2) Averaged visual evoked potential (VEP) in 10 patients with asthenopia was compared with 20 normal subjects.
(3) Comparison of the Lees screen findings, visual fields, and accommodative defects of these patients revealed significant restriction of the Lees screen fields in only those patients who had symptoms of asthenopia (including all in the third group).
(4) Orthoptic therapy was instituted in an adult, alternating esotrope with asthenopia who exhibited inaccurate static accommodative responses with adequate, clinically determined, accommodative facility.
(5) However, asthenopia and diplopia may occur and may be hard to deal with.
(6) Subject if symptoms are unspecific, asthenopia, difficulties in nearwork, and for concentration.
(7) All patients receiving automated accommodative training showed a marked increase in accommodative amplitude along with a concurrent reduction of asthenopia.
(8) Correlations between pretreatment asthenopia scores and asthenopia scores after either induced vergence or version were also not significant.
(9) In general, the visual system was found to be resilient to the stress of sleep loss, the subjects experiencing mild symptoms of asthenopia (eyestrain).
(10) Changes in refractive power were then related to VDT work and asthenopia symptoms.
(11) The prevalence of general binocular dysfunction with asthenopia was determined for non-presbyopes at an urban optometry clinic serving municipal workers and their dependents.
(12) It is found that there was an important relationship between CI and asthenopia.
(13) Cerebral asthenopia is often overlooked as a symptom in diffuse brain lesion.
(14) The subjects consisted of ten college students, aged 20 to 22 years old as normal control and seven patients with asthenopia, aged 20 to 27.
(15) There was no evidence of any anomalous focusing responses resulting from either target chromaticity or defocus that could account for the asthenopia frequently reported by VDU users.
(16) Variations in the near point and retina irritability have been regarded the most sensitive and specific indices of asthenopia.
(17) All patients were in good health and asymptomatic, except for asthenopia during near visual activities.
(18) Subjective VDT-related symptoms of asthenopia were assessed by means of a questionnaire.
(19) In addition, the utilization of RDS associated with operant conditioning has been shown to improve vergence performance and to reduce asthenopia in the convergence insufficiency patient.
(20) The difference between the groups was highly significant (p less than 0.01); contrarywise, none of the subjects without asthenopia developed myopization.
Eyestrain
Definition:
Example Sentences:
(1) Proposed is eventual rationale leading to the reduction of the eyestrain and facilitation of the work.
(2) In general, the visual system was found to be resilient to the stress of sleep loss, the subjects experiencing mild symptoms of asthenopia (eyestrain).
(3) Main ocular mechanisms probably underlying eyestrain symptoms in computer users-diminished aqueous tears, extraocular muscle fatigue, color fatigue and decreased amplitude of accommodation induced by monochromatic light--are discussed.
(4) Likewise VDT operation may be linked to three additional sympathetic nervous system irritants including: (1) electrostatic ambient air negative ion depletion, (2) electromagnetic radiation, and (3) eyestrain and postural stress associated with poor work habits and improper work station design.
(5) Only Groups 1 and 2 had eyestrain after office work.
(6) However, conditions like eyestrain, intermittent angleclosure glaucoma or neovascular glaucoma, and low-grade intraocular inflammation can be painful and not be associated with obvious redness.
(7) Our analysis of the data indicated greater reported eyestrain for the test lens pair (Wilcoxon signed-rank test, p = 0.01).
(8) With this background, some practical consequences are drawn to avoid or reduce eyestrain.
(9) Thanks to these adapted instruments, the micro surgeon gynecologist will be able to practise his laser surgery with more safety, less eyestrain and less difficulties.
(10) A large percentage of the data entry clerks reported chronic physical complaints (eyestrain, musculo-skeletal pains, headache) as well as emotional or mental stress which they felt were associated with their occupation.
(11) Even with the same complaint of eyestrain, it was concluded that VDU work produced abnormalities 1.8 times higher in the near triad produced by tonic stimulus.
(12) This is when many of us find it harder to read and begin to suffer from eyestrain.
(13) Poorly designed overhead lighting systems in all offices contributed to both eyestrain and headache.
(14) And the followings were made clear: 1) At the mild stage of OCD, stiffness or dullness at the neck and shoulders, and eyestrain become remarkable.