The Role of Back Optic Zone Diameter in Myopia Control with Orthokeratology Lenses
| Autor: | António Queirós, Silvia Fonts, Lina Rodríguez, Jaume Pauné |
|---|---|
| Přispěvatelé: | Universidade do Minho |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Refractive error
medicine.medical_specialty Saúde de qualidade genetic structures medicine.medical_treatment lcsh:Medicine orthokeratology axial length Pupillary diameter Pupil Myopia progression Article law.invention pupillary diameter 03 medical and health sciences Axial length 0302 clinical medicine law Ophthalmology Ciências Naturais::Outras Ciências Naturais optic zone diameter medicine Orthokeratology 030304 developmental biology 0303 health sciences Optic zone diameter Science & Technology business.industry lcsh:R Mean age General Medicine myopia progression medicine.disease eye diseases Lens (optics) Outras Ciências Naturais [Ciências Naturais] 030221 ophthalmology & optometry sense organs business |
| Zdroj: | Journal of Clinical Medicine Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP Journal of Clinical Medicine, Vol 10, Iss 336, p 336 (2021) Volume 10 Issue 2 |
| ISSN: | 2077-0383 |
| Popis: | We compared the efficacy of controlling the annual increase in axial length (AL) in myopic Caucasian children based on two parameters: the back optic zone diameter (BOZD) of the orthokeratology (OK) lens and plus power ring diameter (PPRD) or mid-peripheral annular ring of corneal steepening. Data from 71 myopic patients (mean age, 13.34 ± 1.38 years range, 10&ndash 15 years 64% male) corrected with different BOZD OK lenses (DRL, Precilens) were collected retrospectively from a Spanish optometric clinic. The sample was divided into groups with BOZDs above or below 5.00 mm and the induced PPRD above or below 4.5 mm, and the relation to AL and refractive progression at 12 months was analyzed. Three subgroups were analyzed, i.e., plus power ring (PPR) inside, outside, or matching the pupil. The mean baseline myopia was &minus 3.11 ± 1.46 D and the AL 24.65 ± 0.88 mm. Significant (p < 0.001) differences were found after 12 months of treatment in the refractive error and AL for the BOZD and PPRD. AL changes in subjects with smaller BOZDs decreased significantly regarding larger diameters (0.09 ± 0.12 and 0.15 ± 0.11 mm, respectively) in subjects with a horizontal sector of PPRD falling inside the pupil, the AL increased less (p = 0.035) than matching or outside the pupil groups by 0.04 ± 0.10 mm, 0.10 ± 0.11 mm, and 0.17 ± 0.12 mm, respectively. This means a 76% lesser AL growth or 0.13 mm/year in absolute reduction. OK corneal parameters can be modified by changing the OK lens designs, which affects myopia progression and AL elongation. Smaller BOZD induces a reduced PPRDs that slows AL elongation better than standard OK lenses. Further investigations should elucidate the effect of pupillary diameter, PPRD, and power change on myopia control. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |