Good subjective presbyopic correction with newly designed aspheric multifocal contact lens.
Many people of the so-called 'baby-boom' of 1945, nowadays require presbyopic correction. A lot of them choose for multifocal contact lenses, but this is not the perfect solution. Decreased visual acuity and contrast sensitivity, and appearance of haloes, 'ghosting' and glare are a problem. In this pilot study, with ten randomly, selected, consecutive patients, a newly designed soft aspheric multifocal contact lens was tested for visual performance and comfort on day 1 and after six months' wear. Success rate was 80% after six months. Visual acuity was good with exception for near vision under low illumination conditions. Two patients mentioned haloes. A statistical significant loss of contrast sensitivity was recorded on day 1 for the spatial frequencies 6.0, 12.0 and 18.0 cpd (cycles per degree) under high and low illumination. As well as for the spatial frequencies 12.0 and 18.0 cpd under high illumination and 6.0 cpd under low illumination (p = 0.05) after six months' wear. Mean overrefraction was limited. All patients recorded good comfort.
Zandvoort
S W
SW
Department of Ophthalmology, University of Amsterdam, The Netherlands.
Kok
J H
JH
Molenaar
H
H
D003261:Contact Lenses; D015350:Contrast Sensitivity; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010865:Pilot Projects; D011305:Presbyopia / Q000628:therapy*; D011474:Prosthesis Design; D014792:Visual Acuity