Subjective versus objective refraction in healthy young adults

Kozlov, Yuval; Kinori, Michael; Armarnik, Sharon; Yahalomi, Tal; Ekshtein, Aya; Levian, Leora; Mezad-Koursh, Daphna; Pikkel, Joseph; Ben-Ari, Oded

doi:10.1186/s12886-024-03340-w

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…The strength of our study is that a single experienced optometrist performed the subjective manifest refraction at both the postoperative visits, the 1 st wk and end of 6 wk which gives more precise results than an auto refractometer as is also supported by Kozlov et al [ 13 ]. Secondly, an optical biometer was used to perform the ocular biometric measurements which can perform better than an ultrasound biometer.…”

Section: Discussionmentioning

confidence: 65%

Determination of the time of refractive stability after uneventful phacoemulsification in Indian eyes

Nanda,

Panda,

Swain

et al. 2024

World J Exp Med

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BACKGROUND Knowledge about refractive stabilization and the accuracy of postoperative refractive error measurements are crucial for improved patient outcomes after phacoemulsification. Existing guidelines typically recommend waiting 4-6 wk before prescribing corrective lenses. Our research focused on identifying factors that influence refractive errors in the early stages of post-cataract surgery, thus contributing to the existing literature on this topic. AIM To investigate the time required for refraction stability after uneventful phacoemulsification surgery. METHODS We compared the variation and statistical significance of the difference in spherical, cylindrical components, and the spherical equivalent between the 1- and 6-wk follow-up period in a group of 257 eyes that underwent uneventful phacoemulsification with foldable intraocular lens implantation, all performed by a single experienced surgeon. The Wilcoxon-Signed Rank Test was utilized to assess the magnitude of the change and determine its statistical significance. The refractive stability was defined as the point at which the change in spherical equivalent was within ± 0.5 dioptres for two consecutive visits. RESULTS The average age of the patients was 64.9 ± 8.9 yr. The differences observed in both the visits in spherical power (0.1 ± 0.2), cylinder power (0.3 ± 0.4), and spherical equivalent (0.2 ± 0.2) were minimal and not statistically significant. The majority of eyes (93.4%) achieved refractive stability within 6 wk after the surgery. The cylindrical power differed between age groups at the 6th wk post-operative and the difference was statistically significant (P value 0.013). There were no significant differences in refractive stability when considering sex and axial length. CONCLUSION Phacoemulsification with foldable intraocular lens implantation results in no significant changes in refraction for the majority of cases during the 6-wk follow-up period. Therefore, a spectacle prescription can be given at the completion of 1 wk.

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Section: Discussionmentioning

confidence: 65%

Determination of the time of refractive stability after uneventful phacoemulsification in Indian eyes

Nanda,

Panda,

Swain

et al. 2024

World J Exp Med

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Myopia and systemic manifestation of tissue hyperlaxity: A population‐based cross‐sectional study

Hecht,

Nitzan,

Safir

2024

Clinical Exper Ophthalmology

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BackgroundWhether non‐syndromic connective tissue hyperlaxity is associated with myopia is unknown. The aim of this study was to examine the association between systemic signs of tissue hyperlaxity and myopia among adolescents.MethodsIncluded were adolescents assessed before mandatory military service at the age of 16–18 years between 2011 and 2022. Diagnoses of hernias, pes planus, genu varus, genu valgum, and scoliosis, as well as joint injuries were used as surrogate markers for tissue hyperlaxity. The prevalence of these events among adolescents with myopia was evaluated and compared to the non‐myopic population.ResultsIncluded were 920 806 adolescents. The mean age was 17.4 ± 1.4 years and 58.6% were men. Myopia was diagnosed in 290 759 adolescents (31.6%) and high myopia in 24 069 adolescents (2.6%). The prevalence of hernias was higher among adolescents with myopia, (2.76%, 95% confidence interval (95% CI): 2.69%–2.82% vs. 2.60%, 95% CI: 2.57%–2.65%), as were pes planus (14.92%, 95% CI: 14.79–15.05 vs. 13.51%, 95% CI: 13.42–13.59) and scoliosis (9.14%, 95% CI: 9.03–9.24 vs. 7.69%, 95%CI: 7.62–7.76). The prevalence of joint injuries was clinically similar between groups (less than 0.1% difference for ankle, shoulder, and knee injuries), as were genu varum and genu valgum (0.66%, 95%CI: 0.64%–0.69% vs. 0.68%, 95% CI: 0.66–0.70, respectively). Adjusted for possible confounders results remained consistent.ConclusionsAmong a large sample of Israeli adolescents, those with myopia had a higher prevalence of hernias, pes planus, and scoliosis. These results could suggest a propensity for systemic conditions related to tissue laxity among myopic adolescents.

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Effects and Related Factors of Short-time Accommodation Training on Measuring Consistency of InnovEyes Sitemap, Autorefraction, and Subjective Refraction

Jin,

Wang,

et al. 2024

J Refract Surg

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Purpose To evaluate effects and related factors of short-time accommodation training on measuring consistency of InnovEyes Sitemap (Alcon/WaveLight; Alcon Laboratories, Inc), NIDEK ARK-1 autorefractor (Nidek Corporation), and subjective refraction (SR). Methods One hundred adults (100 eyes) with myopia aged 17 to 40 years were enrolled. Refraction was obtained by InnovEyes Sitemap, autorefraction, and SR in a randomized order. Refractive data of InnovEyes Sitemap were grouped into two groups without and with application of a 2.00 diopter (D) flipper before InnovEyes Sitemap. Results The average difference in spherical equivalent (SE) between InnovEyes Sitemap and SR (autorefraction) decreased from −0.56 ± −0.41 D in the without accommodation training group to −0.29 ± −0.14 D in the with accommodation training group, with 95% CI of limits of agreement (LOA) shrinking dramatically (InnovEyes Sitemap–SR: −1.39 to 0.27 vs −0.71 to 0.14 D; InnovEyes Sitemap–autorefraction: −1.23 to 0.40 vs −0.69 to 0.40 D). Furthermore, short-time accommodation training significantly improved the consistency of myopia measurements, with the proportion of SE differences within 0.50 D between InnovEyes Sitemap and SR significantly increasing from 56% to 88% ( P < .001). Meanwhile, J0 and J45 showed no significant difference ( P > .05) with similar LOA among three techniques in both groups. SE difference of InnovEyes Sitemap (with accommodation training group minus without accommodation training group) was significantly correlated to SE difference between SR and habitual glass refraction (β = −0.312, P = .001), lens thickness (β = 0.262, P = .006), and axial length (β = 0.199, P = .037). Conclusions Short-time accommodation training could promote spherical consistency but not deteriorate cylindrical agreement among InnovEyes Sitemap, autorefraction, and SR, and this effect showed more effective in eyes with more undercorrected myopia in habitual prescription, thicker lens, and longer axial length. [ J Refract Surg . 2024;40(12):e941–e955.]

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Subjective versus objective refraction in healthy young adults

Cited by 3 publications

References 21 publications

Determination of the time of refractive stability after uneventful phacoemulsification in Indian eyes

Determination of the time of refractive stability after uneventful phacoemulsification in Indian eyes

Myopia and systemic manifestation of tissue hyperlaxity: A population‐based cross‐sectional study

Effects and Related Factors of Short-time Accommodation Training on Measuring Consistency of InnovEyes Sitemap, Autorefraction, and Subjective Refraction

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