M A Pavilack1, B L Halpern. 1. Department of Ophthalmology, St Joseph Hospital, Lancaster, PA, USA.
Abstract
BACKGROUND: This study characterizes the topographic changes induced by pterygia. METHODS: Using data obtained from a videokeratoscope (TMS-1), we assessed the topographic changes of corneas from 24 consecutive eyes with pterygia. RESULTS: Each pterygium induced a localized area of flattening central to its apex of 38.00 +/- 2.80 diopter (D) which was significantly flatter (p < .0001) than the mean corneal power (43.70 +/- 1.70), minimum corneal power (MinK, 42.70 +/- 2.10), and the power of the flattest corneal meridian (42.90 +/- 1.90). CONCLUSIONS: Our topographic findings characterize an area of localized corneal flattening central to the apex of pterygia. It is not known if this pterygium-associated corneal flattening influences the centripetal growth of pterygia or their tendency not to cross the visual axis.
BACKGROUND: This study characterizes the topographic changes induced by pterygia. METHODS: Using data obtained from a videokeratoscope (TMS-1), we assessed the topographic changes of corneas from 24 consecutive eyes with pterygia. RESULTS: Each pterygium induced a localized area of flattening central to its apex of 38.00 +/- 2.80 diopter (D) which was significantly flatter (p < .0001) than the mean corneal power (43.70 +/- 1.70), minimum corneal power (MinK, 42.70 +/- 2.10), and the power of the flattest corneal meridian (42.90 +/- 1.90). CONCLUSIONS: Our topographic findings characterize an area of localized corneal flattening central to the apex of pterygia. It is not known if this pterygium-associated corneal flattening influences the centripetal growth of pterygia or their tendency not to cross the visual axis.
Authors: Iraklis Vastardis; Bojan Pajic; Richard H Greiner; Brigitte Pajic-Eggspuehler; Daniel M Aebersold Journal: Strahlenther Onkol Date: 2009-12 Impact factor: 3.621
Authors: Grant C Hopping; Anisha N Somani; Uma Vaidyanathan; Harry Liu; James R Barnes; Yasmyne C Ronquillo; Phillip C Hoopes; Majid Moshirfar Journal: Am J Ophthalmol Case Rep Date: 2020-05-04