Spectral Transmittance of Soft Contact Lenses Following One Month of Eyedrop Application: An In Vitro Investigation This study investigated the spectral transmittance of six different types of soft contact lenses after exposure to normal eyedrops use over one month. The normal eyedrops were only meant to be instil into the eyes without contact lenses. The objective of this lab study was to look at the effect of the eyedrops on the spectral transmittance of all contact lenses. The two types of eyedrops for dry eye (eyedrop A) and eye irritation (eyedrop B) were applied to the surface of each contact lens (two drops each) at 2-hour intervals (n = 15), following which the lenses were immediately immersed in saline solution. This process was repeated four times daily (eight hours for Eyedrop A) and five times daily (10 hours for Eyedrops B), with the lenses subsequently soaked in Optifree disinfecting solution overnight. This constituted one complete cycle, which was repeated daily for 30 consecutive days. The control group underwent a similar procedure but used a saline solution instead of a disinfecting solution. Spectral transmittance measurements were conducted on Day 0 and Day 30 for both the experimental and control groups. The results were analysed to determine the average of spectral transmittance values, and the absolute differences between the measurements were calculated. All recorded values fell within the tolerance limits outlined in ISO 18369. This study concluded that neither type of eyedrop induced significant changes in spectral transmittance after 30 days of daily use as recommended by the manufacturer. All tested lenses (in the FDA categories) exhibited consistent spectral transmittance values throughout the study. Therefore, the eyedrops evaluated in this trial were deemed not to affect the spectral transmittance of any soft contact lens types.

Background: There are a few dry eye remedies available in the market. Currently, artificial tears and lubricants are still the most common management for dry eyes. Objective: We proposed a new method in managing dry eyes. Methods: A pre-soaked contact lens in virgin coconut oil (VCOCL) is being used as a vehicle to deliver virgin coconut oil (VCO) in dry eyes. VCOCL was prepared in sterilised conditions where daily soft hydrogel contact lenses were immersed in raw VCO. The efficacy of VCOCL in delivering the VCO to eyes was assessed by measuring the Tear Break-Up Time (TBUT) values, corneal staining of the anterior eye, Schirmer Test values and the measurement of residual VCO volume in tears at baseline and at 15 minutes after insertion on subjects with dry eyes. Pre- and post-data were used to analyse all the measurable variables. Results: This study showed a significant difference in the TBUT, corneal staining, and residual VCO volume for both eyes (p<0.05). However, there were no changes in the Schirmer Test value (p>0.05). VCOCL was proven to improve tear quality in dry eye subjects and was able to maintain its presence in the eye even after 15 minutes. Conclusion This study suggests a new method for dry eye management.
Contact Lenses ; Therapeutics ; Dry Eye Syndromes

This study reports the vision status of a presbyopic patient who has undergone a corneal inlay procedure. The study hopes to provide optometrists more insight on the procedure and the co-management involved in such a patient. The patient, a 48 years-old Chinese woman with presbyopia underwent the corneal inlay procedure three years ago. She had the inlay implanted in the non-dominant eye to aid near vision i.e. her left eye. The pre and post-operative evaluations include distance and near visual acuity, fundoscopy, tonometry, Schirmer’s test, slit lamp evaluation, corneal topography and corneal pachymetry. Near visual acuity for the left eye improved from N14 to N5 immediately after the procedure. Even after 3 years of post-operative followup, the patient was still able to maintain her near vision. In conclusion, the corneal inlay procedure helped to improve near vision of this presbyopic patient. Optometrist plays a very important role in the co-management of such patients alongside with the ophthalmologist in terms of visual functional assessments pre and post-surgery, counseling of the procedure and managing patients’ expectations.
Corneal Injuries