Nir Amitai

Mr. Nir Amitai

orcid

Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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10 October 2025 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
ABAnna Bunin
Anna Bunin
SKShmuel Kagasov
Shmuel Kagasov
NANir Amitai
Nir Amitai
TKTomer Kerman Kerman
Tomer Kerman Kerman
RKRan Matlov Kormas
Ran Matlov Kormas
KBKnyazer Boris
Knyazer Boris
Background: Contact lens-assisted corneal cross-linking can be used to treat keratoconus in patients with thin corneas under measuring less than 400 µm. This study compares the long-term clinical and tomographic outcomes between accelerated corneal cross-linking (A-CXL) and accelerated contact lens-assisted corneal cross-linking (A-CACXL). Methods: Patients who underwent either A-CXL or A-CACXL protocol due to progressive keratoconus were enrolled in this retrospective cohort study conducted between January 2015 and December 2018. The control group (patients with minimum corneal thickness of at least 400 µm, comprising 32 eyes of from 32 patients) was treated with A-CXL, whereas the treatment group (patients that had minimum corneal thickness after epithelial removal below 400 µm; 30 eyes of from 30 patients) underwent the A-CACXL protocol. Clinical and tomographic data were obtained from a 3-year follow-up period. Results: At 3 years, both groups represented a significant gain in best-corrected visual acuity (from 0.32 to 0.18 LogMAR units for A-CXL, p = 0.001; from 0.51 to 0.33 LogMAR units for A-CACXL, p = 0.037). Furthermore, postoperative tomographic parameters (Kmax, Kmean, or corneal astigmatism) were comparable between the two protocols. Progression of keratoconus was halted among 87% of eyes in the A-CXL group and among 73% of eyes in the A-CACXL group (p = 0.2). Conclusions: A-CACXL treatment is an effective and safe option for patients with keratoconus and thin corneas, yielding long term outcomes comparable to those of A-CXL treatment for patients with a minimum corneal thickness of 400 µm following a 3-year follow-up.

9 August 2024 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
AHAnan Hammud
Anan Hammud
YHYosef. S. Haviv
Yosef. S. Haviv
EWEyal Walter
Eyal Walter
NANir Amitai
Nir Amitai
TKTomer Kerman Kerman
Tomer Kerman Kerman
ETErez Tsumi
Erez Tsumi
Purpose: While patients with cardiovascular comorbidities are at a higher risk for the occurrence of non-arteritic anterior ischemic optic neuropathy (NAION), it is unclear whether adherence to medication results in risk reduction. The purpose of this study was to investigate whether nonadherence to medical therapy for cardiovascular morbidity correlates with a higher risk for NAION when compared to patients with strict adherence. Methods: A retrospective case-control study was conducted among members of Clalit Health Services in Israel from 2001 to 2022. For each of the 757 NAION cases, three controls (totaling 2271 patients) were matched based on birth year and sex, with a propensity score analysis employed to adjust for a range of comorbidities. A patient was deemed nonadherent with medical treatment if their purchased quantity of medication was less than 60% of the prescribed annual dosage. Mixed models were used to evaluate exposure differences, and conditional logistic regression was applied, incorporating adjustments for socioeconomic status and ethnicity, to examine the impact of medication nonadherence on NAION risk. Results: A total of 3028 patients were included in the study; 757 patients with the diagnosis of NAION and 2271 in the matched control group. The average age of NAION patients was 69 ± 9 years and 55% were male. After adjustments for socioeconomic status and ethnicity, nonadherence to calcium channel blockers (CCBs) (odds ratio [OR]: 1.33, 95% confidence interval [CI]: 1.03–1.71) and anti-arrhythmic (OR: 5.67, 95% CI: 1.89–21.2) medications emerged as significant risk factors. Similarly, nonadherence to cardioprotective medications (OR: 1.46, 95% CI: 1.23–1.74) was also identified as a significant risk factor. Conclusions: Nonadherence to treatments for cardiovascular disease, specifically to medications known to improve prognosis, is associated with a higher risk for NAION.

7 January 2026 in Brain Sciences
Verified
Journal Article
Open access
PDF file
ISItamar Ben Shitrit
Itamar Ben Shitrit
EWEyal Walter
Eyal Walter
EDErel Domany
Erel Domany
NANir Amitai
Nir Amitai
TKTomer Kerman Kerman
Tomer Kerman Kerman
AHAsaf Honig
Asaf Honig
Purpose: While migraine is linked to increased cerebrovascular risk, its association with non-arteritic anterior ischemic optic neuropathy (NAION) remains underexplored. Methods: We conducted a retrospective case–control study using population-based electronic medical records. NAION patients were compared to propensity score-matched controls regarding migraine prevalence and clinical characteristics. Results: From 2001 to 2022, among 6,566,619 patients, 1629 NAION cases (mean age 67 ± 13 years; 45% female) and 6433 propensity matched controls were identified. The prevalence of migraine was similar in both groups (3.8% vs. 3.3%, p = 0.3). Among migraine patients, those with NAION (n = 62, age 62 ± 11) and controls (n = 212, age 60 ± 11) had comparable baseline characteristics, except for congestive heart failure (9.7% vs. 2.4%, p = 0.027). Within the NAION cohort, migraineurs (n = 64) were younger (62 ± 12 vs. 67 ± 13 years, p < 0.001), and had lower rates of diabetes mellitus (35% vs. 57%, p < 0.001) and peripheral vascular disease (1.6% vs. 9.6%, p = 0.03). Female migraineurs developed NAION at a younger age than females without migraine (60 ± 12 vs. 69 ± 12 years, p < 0.001); no such difference was seen in males. Multinomial logistic regression revealed that migraine was independently associated with younger age at NAION onset, particularly in patients aged 70. An independent 1:4 migraine to non-migraine matched cohort (n = 310) showed similar age-dependent trends. Conclusions: While migraine was not more prevalent among NAION patients, females with migraine developed NAION at a younger age and had fewer vascular comorbidities. Congestive heart failure was more prevalent among migraine patients who developed NAION, suggesting a potential contributory role of systemic hypoperfusion.

17 July 2025 in International Journal of Gynecology & Obstetrics
Verified
Journal Article
Open access
NANir Amitai
Nir Amitai
TKTomer Kerman Kerman
Tomer Kerman Kerman
TETamar Eshkoli
Tamar Eshkoli
AIAhed Imtirat
Ahed Imtirat
ARAmichai Raz
Amichai Raz
ETErez Tsumi
Erez Tsumi
Objective: To investigate whether maternal diabetes during pregnancy is associated with increased risk of strabismus and refractive errors (RE) in their offspring. Methods: This retrospective cohort study utilized electronic medical records from Clalit Health Services (CHS) in Israel, 2001–2023. Births were categorized by maternal diabetes type (type 1, type 2, or gestational) or no diabetes. Mixed models compared demographics and ocular conditions, including RE and strabismus, while generalized estimating equations calculated odds ratios adjusting for confounders. Results: A total of 505 928 maternal and offspring records were analyzed. Strabismus prevalence was 496 (2.0%) in children of diabetic mothers versus 7346 (1.5%) in those of non‐diabetic mothers (odds ratio [OR] 1.29, 95% confidence interval [CI]: 1.18–1.42), and remained significant after adjustment (OR 1.40, 95% CI: 1.27–1.55). In children of mothers with HbA1c >6.5%, strabismus prevalence was 49 (2.9%) compared to 7793 (1.5%) with HbA1c ≤6.5% (adjusted OR 1.78, 95% CI: 1.30–2.43). RE prevalence was 753 (3%) among offspring of diabetic mothers versus 10 785 (2.2%) among non‐diabetic mothers (OR 1.34, 95% CI: 1.24–1.44), with maternal diabetes remaining significantly associated with RE after adjustment (OR 1.61, 95% CI: 1.48–1.74). In the HbA1c >6.5% group, RE prevalence was 71 (4.2%) versus 11 467 (2.3%) with normal HbA1c (adjusted OR 1.97, 95% CI: 1.54–2.53). Conclusion: Maternal diabetes during pregnancy is associated with strabismus and RE in the offspring, with higher risk with high HbA1c levels.

17 November 2025 in Education Sciences
Verified
Journal Article
Open access
PDF file
YHYael Hollander
Yael Hollander
NANir Amitai
Nir Amitai
SYShimrit Salem Yaniv
Shimrit Salem Yaniv
ISItamar Ben Shitrit
Itamar Ben Shitrit
Anat HorevAnat Horev
Anat Horev
AHAmir Horev
Amir Horev
Medical students often begin their studies with preconceived notions about specialties, which may evolve as they gain clinical experience. This study aimed to assess changes in specialty preferences over six years of medical training and to compare two cohorts of first-year students. A repeat cross-sectional design was used, analyzing survey data from the 2019 class during preclinical (first–second year) and clinical (sixth year) stages, and from the 2024 first-year cohort. A total of 367 students participated. Comparing preclinical and clinical students revealed a significant increase in interest in ophthalmology (2.9% vs. 11%, p = 0.012), along with non-significant upward trends in obstetrics and gynecology and family medicine. Declines were observed in psychiatry, oncology, neurosurgery, and surgery. The 2024 cohort included a higher proportion of students with a prior medical background compared with the 2019 cohort (43% vs. 23%, p = 0.002), but no other demographic or specialty preference differences were identified. These findings suggest that specialty preferences among medical students may shift during clinical training, while initial preferences appear relatively consistent across cohorts. Understanding how medical education influences career development may guide curricular strategies to balance specialty distribution and address workforce needs.