CATARACT SURGERY

This study was carried out to determine the variation in keratometric reading using autorefractor before and after cataract surgery in St Teresa Specialist and Laser Eye Center, Edo State. This was a prospective study of one hundred (n = 100) cataract patients (50 males and 50 females) aged between 35-98 years, scheduled for cataract surgery between November to January 2022. Autorefractor (with in built keratometer ) was used to measure the flat meridian (K1) and steep meridian (K2). Cornea astigmatism (CA) was gotten by taking the difference in both meridian. The data collected was analyzed using the statistical package for social sciences (SPSS) version 22.0 and Descriptive statistics (frequencies, percentages, mean and standard deviation) was used to summarize the variables. There was a statistically significant variation in K1 and K2 values before cataract surgery, one and four weeks after cataract surgery.( p<0.001 for K1 before,one week and four weeks after surgery,also p<0.001 for K2 before surgery,one week and four weeks after surgery.) The study also showed that there was no significant difference in cornea astigmatism (CA) before the surgery and one week after the surgery(p=0.412). There was significant difference in CA before the surgery and four weeks after the surgery (p=0.010).There was also significant difference in CA one week after the surgery when compared to four weeks after the surgery (p=0.008).From the study,it was revealed that there is a statistically significant variation that exit in K1 and K2 values before and after cataract surgery as well as cornea astigmatism.