Nearwork-induced transient myopia and accommodation function before and after laser-assisted in situ keratomileusis surgery

Sivaraman, Viswanathan and Price, Holly C. and Rizwana, Jameel H. and Ramani, Krishnakumar and Allen, Peter M. (2021) Nearwork-induced transient myopia and accommodation function before and after laser-assisted in situ keratomileusis surgery. Indian Journal of Ophthalmology, 69 (7). pp. 1707-1711. ISSN 1998-3689

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Official URL: http://dx.doi.org/10.4103/ijo.IJO_3224_20

Abstract

Purpose: To assess the change in Near Induced Transient Myopia (NITM) and other accommodation parameters, before and after undergoing LASIK surgery for myopia correction. Methods: Twenty-nine myopic subjects were recruited from a tertiary eye hospital in India. Age range was 21 to 35 years with an average age of 26.1 ± 3.5 years. Mean spherical equivalent was –3.86 D ± 1.50 D presurgery. NITM, lag of accommodation, near point of convergence (NPC), accommodative amplitude (AA), and binocular near accommodative facility (AF) were measured. All data were collected 21 days prior to and 30 days after LASIK surgery. Results: NITM, lag of accommodation and amplitude of accommodation were significantly lower (NITM - 0.05 ± 0.15, Lag 0.38 ± 0.38, AA 10.27 ± 2.24) after surgery when compared to before (NITM 0.26 ± 0.12, Lag 0.77 ± 0.51, AA 12.18 ± 2.02; P < 0.001). Accommodative facility increased and near point of convergence was significantly more distal following surgery (AF 10.70 ± 2.29, NPC 7.96 ± 1.63) when compared to prior (AF 8.65 ± 2.74, NPC 5.62 ± 1.71; P < 0.001). Conclusion: Significant changes in NITM and accommodation function should be expected in the short term following LASIK surgery. This study supports the importance of evaluating accommodative parameters and patient counselling prior to and following refractive surgery.

Item Type: Journal Article
Keywords: Accommodation, LASIK, near induced transient myopia
Faculty: Faculty of Science & Engineering
Depositing User: Lisa Blanshard
Date Deposited: 17 Mar 2021 16:49
Last Modified: 05 Jul 2021 14:52
URI: https://arro.anglia.ac.uk/id/eprint/706415

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