Page 119 - The Indian Optician Digital Edition November-December 2021
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status of the eye. It is therefore   The patients were divided into two groups by axial length: AXL
          important to investigate          G1 included patients with AXL ≤24.20 mm and AXL G2 included
          whether any correlation exists    patients with AXL >24.20 mm. All patients were divided into two
          between RNFL measurement          groups by Spherical Equivalent (SE) of Refractive error: SE G1
          and axial length/refractive       <-3.00 D; SE G2 ≥-3.00 D. Statistical analyses were performed with
          error in myopia. This study is    commercially available software IBM SPSS statistic 26.
          aimed at evaluating the RNFL      RESULTS
          thickness by optical coherence
          tomography and comparing             68 eyes were included in this study, with a minimum SE of
          it with the axial length and      -1.00D, maximum SE of -9.88D. The mean age of the subject was
          refractive error in myopes.         TABLE: 1 COMPARISON OF MEAN DIFFERENCES BETWEEN

          AIM                                TWO AXL GROUP 1 & AXL GROUP 2
                                             RNFL Thickness    Group AXL          N   Mean ± Std.     P- Value
             The purpose of this study
          was to investigate the retinal                                              Deviation
          nerve fibre layer thickness        RNFL Superior     AXL G1(≤ 24.20)    35 121.40 ± 21.25   0.644
          changes with the increase in                         AXL G2(>24.20)     33 119.42 ± 12.48
          axial length in myopes. The        RNFL Inferior     AXL G1(≤ 24.20)    35 125.46 ± 15.67   0.030
          second objective of this study
          was to analyse the effects of                        AXL G2(>24.20)     33 117.85 ± 12.37
          refractive error on the RNFL       RNFL Nasal        AXL G1(≤ 24.20)    35 69.69 ± 8.47     0.049
          thickness measurement.
                                                               AXL G2(>24.20)     33 66.03 ± 6.38
          MATERIAL AND METHODS               RNFL Temporal     AXL G1(≤ 24.20)    35 63.91 ± 9.19     0.623

             Patients, with myopia of -1D                      AXL G2(>24.20)     33 65.03 ± 9.42
          to -10D, who visited Rotary Eye    Average RNFL      AXL G1(≤ 24.20)    35 95.60 ± 10.12    0.120
          Institute, Navsari for evaluation
          from December 2020 to June                           AXL G2(>24.20)     33 92.15 ± 7.68
          2021 underwent an ocular
          examination that included
          AXL and OCT RNFL thickness
          measurement. Axial length
          (AXL) was measured by an IOL
          master 500. RNFL thickness
          was measured by a Cirrus HD
          Spectral Domain OCT (Carl
          Zeiss Meditec, Inc) (SW version:
          10.0.1.19039).

             Myopic patients with 20 to
          30 years of age with normal
          anterior and posterior segment
          findings were included. Some
          patients were excluded due to
          the previous history of ocular
          pathology, trauma, history of
          any surgery, and presence of
          any ophthalmic condition that     TABLE: 1 COMPARISON OF MEAN DIFFERENCES BETWEEN TWO AXL GROUP 1 &
          could alter the Axial length.     AXL GROUP 2


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