Posters
The influence of the posterior radius of curvature on keratoconus
Poster Details
First Author: C.Jardim BRAZIL
Co Author(s): F. Rodrigues L. Avila M. Ávila
Abstract Details
Purpose:
In this study, we want to know the real influence of posterior corneal curvature on the pathophysiology of the disease and its role in the evolution of the disease.
The objective of this study is to compare the difference in the corneal posterior radius of curvature (PRC) taken from the 3mm zone centered on the thinnest point of patients with keratoconus in a minimum interval of 5 months. Also compare the alteration between patients with manifest and subclinical keratoconus, different groups according to age, progressive or stable disease.
Setting:
Federal University Of Goias at CEROF (Referece center of Ophthalmology)
Methods:
We retrospectively analysed the data of medical records of patients of a specialized ophthalmology service. Data were collected from August 2016 to November 2018.Data from Pentacam® was collected at 2 consecutive exams with an interval of at least 5 months between them. We divided into groups according to age (<20years: Group 1; > 20 years: Group 2), KCN classification (A,B and C=0: group CSC; A,B or C≠0: group C) and if they show progression between exams. PRC data were analyzed and compared between the exams on the different dates.
Results:
The mean age was 19,82 (from 11 to 47 years). 32 eyes (71,11%) in Group C, 9 eyes with progression, 25 eye in Group 1. The mean PRC was 5,83 mm at the exame 1 and 5,82 mm, at the exam 2. When we divided into groups there were no significant variations in the posterior radios of curvature. The mean PRC in the Group C was of 5.61mm while the group CSC had a mean of 6,10mm (p<0,001).
Conclusions:
The posterior radius of curvature does not have any significant variation in any of the evaluated groups during the period between exams. The PRC is, though, significantly smaller in keratoconus patients than in forme frustre keratoconus.
Financial Disclosure:
None
