Nearwork-induced transient myopia and accommodation function before and after laser-assisted in situ keratomileusis surgery
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 a...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2021-01-01
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| Series: | Indian Journal of Ophthalmology |
| Subjects: | |
| Online Access: | http://www.ijo.in/article.asp?issn=0301-4738;year=2021;volume=69;issue=7;spage=1707;epage=1711;aulast=Sivaraman |
| _version_ | 1819112286863753216 |
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| author | Viswanathan Sivaraman Holly C Price Jameel Rizwana Hussaindeen Krishnakumar Ramani Peter M Allen |
| author_facet | Viswanathan Sivaraman Holly C Price Jameel Rizwana Hussaindeen Krishnakumar Ramani Peter M Allen |
| author_sort | Viswanathan Sivaraman |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-22T04:11:06Z |
| format | Article |
| id | doaj.art-d97bb1149e6047e99f65ad6cb02fbbae |
| institution | Directory Open Access Journal |
| issn | 0301-4738 1998-3689 |
| language | English |
| last_indexed | 2024-12-22T04:11:06Z |
| publishDate | 2021-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Indian Journal of Ophthalmology |
| spelling | doaj.art-d97bb1149e6047e99f65ad6cb02fbbae2022-12-21T18:39:32ZengWolters Kluwer Medknow PublicationsIndian Journal of Ophthalmology0301-47381998-36892021-01-016971707171110.4103/ijo.IJO_3224_20Nearwork-induced transient myopia and accommodation function before and after laser-assisted in situ keratomileusis surgeryViswanathan SivaramanHolly C PriceJameel Rizwana HussaindeenKrishnakumar RamaniPeter M AllenPurpose: 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.http://www.ijo.in/article.asp?issn=0301-4738;year=2021;volume=69;issue=7;spage=1707;epage=1711;aulast=Sivaramanaccommodationlasiknear induced transient myopia |
| spellingShingle | Viswanathan Sivaraman Holly C Price Jameel Rizwana Hussaindeen Krishnakumar Ramani Peter M Allen Nearwork-induced transient myopia and accommodation function before and after laser-assisted in situ keratomileusis surgery Indian Journal of Ophthalmology accommodation lasik near induced transient myopia |
| title | Nearwork-induced transient myopia and accommodation function before and after laser-assisted in situ keratomileusis surgery |
| title_full | Nearwork-induced transient myopia and accommodation function before and after laser-assisted in situ keratomileusis surgery |
| title_fullStr | Nearwork-induced transient myopia and accommodation function before and after laser-assisted in situ keratomileusis surgery |
| title_full_unstemmed | Nearwork-induced transient myopia and accommodation function before and after laser-assisted in situ keratomileusis surgery |
| title_short | Nearwork-induced transient myopia and accommodation function before and after laser-assisted in situ keratomileusis surgery |
| title_sort | nearwork induced transient myopia and accommodation function before and after laser assisted in situ keratomileusis surgery |
| topic | accommodation lasik near induced transient myopia |
| url | http://www.ijo.in/article.asp?issn=0301-4738;year=2021;volume=69;issue=7;spage=1707;epage=1711;aulast=Sivaraman |
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