LASIK for Myopic Astigmatism and Presbyopia Using Non-Linear Aspheric Micro-Monovision with the Carl Zeiss Meditec MEL 80 Platform. 2011

Dan Z Reinstein, and Timothy J Archer, and Marine Gobbe
London Vision Clinic, London, United Kingdom. dzr@londonvisionclinic.com

OBJECTIVE to evaluate the monocular and binocular visual outcomes of LASIK with a non-linear aspheric micro-monovision protocol for the correction of myopic astigmatism and presbyopia. METHODS a retrospective, noncomparative case series included 310 eyes of 155 consecutive patients with myopic astigmatism and presbyopia who were treated with LASIK-induced micro-monovision. The Carl Zeiss Meditec CRS-Master software and MEL 80 excimer laser were used. The target refraction was plano for distance eyes (dominant eye) and between -0.75 and -2.00 diopters (D) for near eyes. Patients were followed for 1 year. Mean attempted spherical equivalent refraction (SE) correction was -3.59 ± 1.79 D (range: -0.20 to -8.31 D). Mean attempted cylinder correction was 0.84 ± 0.63 D (range: 0 to 2.50 D). Median patient age was 49 years (range: 43 to 63 years). Median follow-up was 12.5 months. RESULTS outcome measures after all treatments were as follows. Achieved SE correction was within ± 0.50 D in 92% and within ± 1.00 D in 99% of eyes. Monocular uncorrected distance visual acuity was 20/20 in 99% and 20/32 in 100% of distance eyes. Binocular uncorrected near visual acuity was J2 in 96% and J5 in 100% of patients. Binocular uncorrected visual acuity was 20/20 and J5 in 99% of patients. No eyes lost 2 or more lines of corrected distance visual acuity. There was no change in mesopic contrast sensitivity (CSV-1000) at all spatial frequencies. The average change in refraction between 3 months and 1 year was -0.0 6± 0.31 D. CONCLUSIONS this non-linear aspheric myopic micro-monovision protocol was well-tolerated, stable, and effective for treating patients with presbyopia in moderate to high myopic astigmatism.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009216 Myopia A refractive error in which rays of light entering the EYE parallel to the optic axis are brought to a focus in front of the RETINA when accommodation (ACCOMMODATION, OCULAR) is relaxed. This results from an overly curved CORNEA or from the eyeball being too long from front to back. It is also called nearsightedness. Nearsightedness,Myopias,Nearsightednesses
D011305 Presbyopia The normal decreasing elasticity of the crystalline lens that leads to loss of accommodation. Presbyopias
D012029 Refraction, Ocular Refraction of LIGHT effected by the media of the EYE. Ocular Refraction,Ocular Refractions,Refractions, Ocular
D003315 Cornea The transparent anterior portion of the fibrous coat of the eye consisting of five layers: stratified squamous CORNEAL EPITHELIUM; BOWMAN MEMBRANE; CORNEAL STROMA; DESCEMET MEMBRANE; and mesenchymal CORNEAL ENDOTHELIUM. It serves as the first refracting medium of the eye. It is structurally continuous with the SCLERA, avascular, receiving its nourishment by permeation through spaces between the lamellae, and is innervated by the ophthalmic division of the TRIGEMINAL NERVE via the ciliary nerves and those of the surrounding conjunctiva which together form plexuses. (Cline et al., Dictionary of Visual Science, 4th ed) Corneas
D005260 Female Females
D005500 Follow-Up Studies Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease. Followup Studies,Follow Up Studies,Follow-Up Study,Followup Study,Studies, Follow-Up,Studies, Followup,Study, Follow-Up,Study, Followup
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults

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