Corneal lenses before RGP, or those were the good (?) old days
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Photoatlus Cornea1 Lenses before RGP, or Those Were the Good (?) Old Days Joe B. Goldberg, OD, FAA0 Contact lens fitting had some interesting moments a few years ago. Our one material, polymethylmethacrylate (PMMA), was prescribed for everyone. One of my first interesting experiences with contact lenses occurred when I fitted an aphakic patient with a cornea1 lens (Figure 1). The contact lens ruptured some conjunctival vessels and blood was observed on the cornea1 surface. A patient with congenital cataracts developed a filtering bleb after surgery (Figure 2). Although there was a risk, I Address reprint requests to Dr. Goldberg at 4217 Virginia Beach Blvd., Virginia Beach, VA 23452. Accepted for publication October 1991. Figure 1. A comeal lens ruptured some conjunctival vessels for this aphakic patient. The blood is on the cornea1 surface. Figure 2. A filtering bleb is at one o’clock on the sclera. The red-free filter was used with biomicroscopy to observe it. Figure 3. Aphakic eye with a triangular shaped iridectomy. 0 1992 Butterworth-Heinemann ICE, Vol. 19, January/February 1992 39
Transcript of Corneal lenses before RGP, or those were the good (?) old days
Photoatlus
Cornea1 Lenses before RGP, or Those Were the Good (?) Old Days
Joe B. Goldberg, OD, FAA0
Contact lens fitting had some interesting moments a few years ago. Our one material, polymethylmethacrylate (PMMA), was prescribed for everyone.
One of my first interesting experiences with contact lenses occurred when I fitted an aphakic patient with a cornea1 lens (Figure 1). The contact lens ruptured some conjunctival vessels and blood was observed on the cornea1 surface.
A patient with congenital cataracts developed a filtering bleb after surgery (Figure 2). Although there was a risk, I
Address reprint requests to Dr. Goldberg at 4217 Virginia Beach Blvd., Virginia Beach, VA 23452.
Accepted for publication October 1991.
Figure 1. A comeal lens ruptured some conjunctival vessels for this aphakic patient. The blood is on the cornea1 surface.
Figure 2. A filtering bleb is at one o’clock on the sclera. The red-free filter was used with biomicroscopy to observe it.
Figure 3. Aphakic eye with a triangular shaped iridectomy.
0 1992 Butterworth-Heinemann ICE, Vol. 19, January/February 1992 39
Photoatlas
Figure 4. Cornea1 lens with an opaque periphery fitted for an aphakic eye that has a sphincterotomy. The lens is too small and its position is inferior.
fitted him with cornea1 lenses binocularly and he has worn them successfully since 1967.
Another interesting experience was a patient with a sphincterotomy (Figure 3).
The patient was a military pilot who developed a cataract and had it removed. However, the surgery created a very large keyhole iridectomy, or sphincterotomy. An attempt to fit him with a cosmetic cornea1 lens was unsuccessful (Figure 4).
This case was unsuccessful because the lens could not be made large enough to satisfy fitting criteria. Furthermore, because this odd-shaped pupil retained its size when the intensity of light was increased and decreased, the patient was always aware of the slightest lens movement.
Soft contact lenses with opaque peripheral areas can be successful in these cases when they create a good cosmetic effect and satisfy the criteria for centration and displace- ment on blinking.
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