Name: | Description: | Size: | Format: | |
---|---|---|---|---|
630.21 KB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
O ceratocone é considerado a ectasia corneal mais comum, qu e se caracteriza
por um adelgaçamento progress ivo da córnea com uma reduzida acuidade visual (
acompan hada por fotofobia, como resultado de um astigmatismo irregular Nesta
situaç ão clínica recorre se frequentemente à adaptação de lentes de contacto
Procu rou se assim, com a realização deste trabalho desenvolver um protocolo de
adaptação de lente de contacto escleral (LCE) em pacientes com ceratocone, utilizando
o OCT S egmento A nterior (OCT SA) SA), com o intuito de realizar de uma forma mais
simples e segura a reabilitação visual destes pacientes
Trata
se de um estudo prospetivo e longitudinal , o qual inclui u 20 pacientes
portadores de ceratocone. Todos os pacientes re aliza ram uma primeira consulta de
observação oftalmológica antes da adaptação da lente ICD ™ 16.5. Após a adaptação
foram realizadas quatro consultas: consulta d e ensino e consultas de seguimento aos 2,
6 e 12 meses . O OCT SA foi realizado em todas as co ns ultas, exce to na consulta de
ensino
A análise estatística foi
efe tivada usando o programa StatView (SAS, Cary, NC) NC),
considerando resultados com p<0.05 estatisticamente significativos Foram analisados
20 olhos com uma idade média 31.5 10.9 anos A AV média sem correção era de 0.03
0.06 a melhor AV corrigida era de 0.25 0.22 , tendo se verificado um aumento
estatisticamente significativo após a colocação da LCE (p<0.0001), passando para 0.85
0.15 Não houve diferenças significativas entre a primeira e a última consulta.
Analisando o vault da lente, verificou se que este sofre u um a diminuição
estatisticamente significativa dos 6 meses para os 12 meses (p =0.0116
É possível con
cluir que a existência de um protocolo de adaptação de LCE bem
definido , incluindo a realização do OCT SA contribui para o sucesso do tratamento de
pacientes com ceratocone . Este equipamento, não invasivo e de alta defini ção, permite
encontrar , de forma mais segura , precisa e reprodutível, o equilíbrio perfeito entre uma
córnea cónica e uma LCE
Keratoconus is considered the most common corneal ectasia, which is characterized by a progressive thinning of the cornea with reduced visual acuity ( VA ) accompanied by photophobia, as a result of irregular astigmatism. In this clinical situation, contact lenses are often used. W ith this work, we aimed to develop a scleral contact lens (SCL) adaptation protocol in patients with keratoconus, using the Segment Anterior OCT (SA OCT), in order to perform a visual rehabilitation of these patients in a simple an d safe way. This is a prospective and longitudinal study, which included 20 patients with keratoconus. All patients underwent a first ophthalmological consultation before fitting the ICD ™ 16.5 lens. After adaptation, four consultations were performed : teaching consultation and follow up consultations at 2, 6 and 12 months. SA OCT was performed in all consultations, except in the teaching consultation. The statistical analysis was carried out using the StatView program (SAS, Cary, NC), considering results with p <0.05 statistically significant. Twenty eyes were analyzed, with an average age of 31.5 10.9 years. The mean uncorrected VA was 0.03 0.06, the best corrected VA was 0.25 0.22, with a s tatistically significant increase after the placement of the SCL (p <0.0001), changing to 0.85 0.15. There were no significant differences between the first and the last consultation. Analyzing the lens vault, it was found a statisticall y significant decrease from 6 to 12 months (p = 0.0116). It is possible to conclude that the existence of a well defined SCL adaptation protocol, including the performance of SA OCT , contributes to the successful treatment of patients with keratocon us. This equipment, non invasive and with high definition, allows to find, in a safer, more accurate and reproducible way, the perfect balance between a conical cornea and a SCL
Keratoconus is considered the most common corneal ectasia, which is characterized by a progressive thinning of the cornea with reduced visual acuity ( VA ) accompanied by photophobia, as a result of irregular astigmatism. In this clinical situation, contact lenses are often used. W ith this work, we aimed to develop a scleral contact lens (SCL) adaptation protocol in patients with keratoconus, using the Segment Anterior OCT (SA OCT), in order to perform a visual rehabilitation of these patients in a simple an d safe way. This is a prospective and longitudinal study, which included 20 patients with keratoconus. All patients underwent a first ophthalmological consultation before fitting the ICD ™ 16.5 lens. After adaptation, four consultations were performed : teaching consultation and follow up consultations at 2, 6 and 12 months. SA OCT was performed in all consultations, except in the teaching consultation. The statistical analysis was carried out using the StatView program (SAS, Cary, NC), considering results with p <0.05 statistically significant. Twenty eyes were analyzed, with an average age of 31.5 10.9 years. The mean uncorrected VA was 0.03 0.06, the best corrected VA was 0.25 0.22, with a s tatistically significant increase after the placement of the SCL (p <0.0001), changing to 0.85 0.15. There were no significant differences between the first and the last consultation. Analyzing the lens vault, it was found a statisticall y significant decrease from 6 to 12 months (p = 0.0116). It is possible to conclude that the existence of a well defined SCL adaptation protocol, including the performance of SA OCT , contributes to the successful treatment of patients with keratocon us. This equipment, non invasive and with high definition, allows to find, in a safer, more accurate and reproducible way, the perfect balance between a conical cornea and a SCL
Description
Trabalho realizado para a obtenção do Título de Especialista na área de Tecnologias de Diagnóstico e Terapêutica Ortóptica
Keywords
Ortóptica Ceratocone Lente escleral Reduzida acuidade visual
Citation
Publisher
Instituto Politécnico do Porto. Escola Superior de Saúde