Relationship of pterygium morphology and size to astigmatic changes and effect of excision of pterygium on induced astigmatism.

Dr Charuta Mandke; Dr Lanjewar Shruti; Dr Afzal Khan; Dr Swapnil Shinde

Volume : IX, Issue : VI, June - 2019

Relationship of pterygium morphology and size to astigmatic changes and effect of excision of pterygium on induced astigmatism.

Dr Charuta Mandke, Dr Lanjewar Shruti, Dr Afzal Khan, Dr Swapnil Shinde

Abstract :

Aim :To study the effect of size of pterygium and pterygium excision on pterygium induced astigmatism. Methods:Retrospective study involving 52 eyes undergoing pterygium excision with conjunctival grafting with 6 month follow up. Results: 86.53% eyes had nasal pterygium with Grade II pterygium was noted in >50% cases. Primary pterygium induced with the rule astigmatism (WTA). The amount of astigmatism varied signifiactly with the grade of pterygium. (P< 0.0005). Mean astigmatism with grade II pterygium was 1.72D, grade III pterygium was 4.52D and 6.5D in grade IV pterygium cases. 13.77% eyes with double pterygium had mean astigmatism of 2.87D WTA. At one month postoperative follow up,mean astigmatism improved significantly in all the 52 eyes from 3.9D WTA to –0.26D (Against the rule astigmatism). (P< 0.0005). Conclusion: This study confirms that Pterygium excision surgery significantly reduces induced astigmatism which is proportional to the size of pteryium