Contact Lens Case Reports (Optometry And Vision Science) Assignment

Contact Lens Case Reports (Optometry And Vision Science) Assignment Contact Lens Case Reports (Optometry And Vision Science) â€" Assignment Example > CONTACT LENS CASE REPORTS (OPTOMETRY AND VISION SCIENCE)30th October, 2008Executive SummaryThe following discussion aims to pick up few selected case studies dealing with specialty contact lens patients for analyzing and interpreting the specific problems and apt solutions for cure of the complexities and difficulties faced in putting up contact lens. Care and management required is also studied in detail for each case. Case 1Case summaryThe case deals with the patient suffering from keratoconus with progressive corneal thinning leading to vision problems and haziness. The patient was using KBA lenses and developed problems of dimple veiling and corneal scarring, however timely modifications in the parameters of the lens fitted helped in the removal of staining and fogging in the eye. Patient’s HistoryThe very first case under observation to deal with the problems of contact lenses was taken to be of a 32 years old male who was diagnosed with binocular keratoconus which causes pr ogressive deterioration in vision and leads to further thinning and distortion of the cornea which causes reduced vision, blurred distance vision, glare and disturbed night vision as well, however use of proper contact lenses can help in maintaining good functional vision (Kymes S, Walline J , Zadnik K , Gordon M. viewed on 30th October, 2008). The patient suffered with the problem in 2004 with measurements of visual acuity in the right eye as 6/60 ¯ and in the left eye as 6/60 ¯. Past research have supported the fact that binocular entrance visual acuity worse than 20/40, is generally linked with a lower quality of life scores except in maintaining general health and ocular pain (Kymes S, Walline J , Zadnik K , Gordon M. viewed on 30th October, 2008). Contact Lens DetailsThe past history of the patient revealed that he was wearing KBA contact lenses since 22nd November, 2006 with parameters in the right eye measuring eccentricity as 1.15, base curve 6.44 mm, diameter 10.2 mm, pow er -12.25D, periphery BOSTON XO, marked “R”, tint blue and the Left eye measurement showed an eccentricity 0.96, base curve 6.96 mm, diameter 10.2 mm, power -8.00D, periphery BOSTON XO, marked “L”, tint blue. The Visual acuity with his lenses in the right eye was 6/7.5 and in the left eye were 6/9+3. The patient did complain about fogging in his left eye and at the same time the right eye was found with proper functioning and absence of any sort of aliment or discomfort. The patient was wearing these lenses on an extended wear basis and was able to manage comfortably wearing the lens in his right eye for longer period in comparison to his left eye. The cleaning solution used by the patient was Simplus Multi Action Solution from Bausch and Lomb which is safe an effective as it helps in removal of accumulated proteins and is easy to use as well. Its cleaning System helps in the removal of dirt and deposits from the contact lenses destroying the micro organisms and aiding a we tting and a cushioning system. .Clinical Findings and ObservationsOn 10the Jan, 2007, it was advised to change some of the left lens parameters such as the eccentricity to 1.17 from 0.96, base curve 6.7 mm, power -9.25. But the results were not very promising as the new left lens was causing much more fogging and the patient preferred to use his old left eye lens instead of the new changes recommended. On 14th June, 2007, under the slit lamp examinations, it was found that there were staining in the right eye and the lens was with good pooling, and the left eye was with dimple veiling and the pooling was toward the edge. Further on 2nd September, 2008 the right eye of the patient had developed an inferior corneal scarring and staining which might be caused due to an improper contact lens design or due to anatomical factors linked with specific patients however proper follow up may prevent such conditions as in the current case (Buch R J, Fogt N, Barr T J, 1996) but at the same the fitting was good and the left eye was with central touch with very wide edge and bubbles. After studying the patient it what advised to change the left lens to the eccentricity 1.12, base curve 6.48 mm, power -11.00D, diameter 10.2 mm with optic diameter of 6.0 mm and with 10.5 EDGE. The Keratoconic Bi-Aspheric Design lenses are large in size, as in the case the posterior surface eccentricity of the lens is flattened to 1.12, the base curve radius needs to be steepened to maintain the desired sagittal depth across the apex that is why it is decreased to 6.48 mm. The KBA software is beneficial under such circumstances as it helps the practitioner to make simple calculations necessary to maintain and sustain the desired sagittal depth (Patrick J, Caroline F, Mark P, Andre F, 2003)