Page 109 - The Indian Optician Digital Edition November-December 2021

Analysis 1: Comparison of mean differences symptoms of ocular allergy in past and
between Score and Stage present, if any drugs they are using currently,
and if they have any allergies other than
Descriptive Statistics ocular allergy.
Mean Std. Deviation N
The patients were examined and asked about
Score 2.01 1.724 70 the following details:
Stage 1.67 0.896 70  Patient’s particulars

 Complete ophthalmic and systemic history
Analysis 2: Correlation Test: Pearson correlation
between Score and Stage  Anterior segment examination
Correlations  Subjective Test
Score Stage  Keratometry Reading

Pearson  Pachymetry Readings
Correlation 1 0.003
Score  Topography Readings/Pentacam Readings
Sig. (2-tailed) 0.980

N 70 70 INCLUSION CRITERIA:
Pearson  Patients with any type of Keratoconus
Correlation 0.003 1
Stage  Patients with or without C3R and DALK
Sig. (2-tailed) 0.980 EXCLUSION CRITERIA:
N 70 70
Ho: There is no correlation between  No other ocular abnormality
Score and Stage. Ho accepted. P<0.01, where Result: A total of 70 eyes were correlated
r = 0.003. There is no correlation between Score between two groups: [1] Score (according to
and Stage. patient’s response) and Stage (according to the
Krumeich classification) [2] Score (according to
the patient’s response) and the patient using
EQUIPMENT USED: the drug.

 Trial set: This includes the trial frame, trial Data were analysed using IBM SPSS statistics
lenses, occluder and accessories 20 software. All the tests were performed to
check the mean difference and the Pearson
 Corneal Topography: ATLAS of Zeiss correlation coefficient for each group. The
Company Pearson correlation coefficient was used to
check if the relationship between the variables is
 Automated Keratometer: NIDEK KM-500
Hand Held Automated Keratometer approximately linear where P<0.01.

 Specular microscope: TOPCON SP-2000P
non-contact specular microscope
Analysis 3: Comparison of mean differences
METHODOLOGY: between Score and Patient using the drug
 This study was a questionnaire-based Descriptive Statistics
retrospective study.
Mean Std. Deviation N
 All the patients who were clinically diagnosed Score 2.01 1.724 70
with Keratoconus by M.S. Ophthalmologist
were asked questions related to the Using Drug 1.5429 0.50176 70

105 |KERATOCONUS